/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:05:11,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:05:11,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:05:11,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:05:11,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:05:11,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:05:11,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:05:11,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:05:11,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:05:11,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:05:11,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:05:11,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:05:11,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:05:11,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:05:11,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:05:11,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:05:11,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:05:11,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:05:11,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:05:11,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:05:11,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:05:11,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:05:11,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:05:11,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:05:11,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:05:11,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:05:11,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:05:11,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:05:11,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:05:11,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:05:11,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:05:11,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:05:11,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:05:11,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:05:11,722 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:05:11,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:05:11,723 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:05:11,723 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:05:11,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:05:11,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:05:11,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:05:11,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:05:11,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:05:11,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:05:11,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:05:11,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:05:11,752 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:05:11,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:05:11,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:05:11,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:05:11,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:05:11,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:05:11,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:05:11,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:05:11,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:05:11,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:05:11,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:05:11,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:05:11,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:05:11,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:05:11,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:05:11,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:05:11,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:05:11,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:05:11,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:05:11,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:05:11,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:05:11,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:05:11,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:05:11,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:05:11,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:05:11,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:05:12,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:05:12,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:05:12,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:05:12,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:05:12,116 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:05:12,117 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:05:12,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbb11ca3b/670254ae95b94d7797ad2188ff921362/FLAG1f94c18f4 [2020-10-13 14:05:12,936 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:05:12,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:05:12,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbb11ca3b/670254ae95b94d7797ad2188ff921362/FLAG1f94c18f4 [2020-10-13 14:05:13,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbb11ca3b/670254ae95b94d7797ad2188ff921362 [2020-10-13 14:05:13,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:05:13,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:05:13,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:05:13,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:05:13,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:05:13,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:05:13" (1/1) ... [2020-10-13 14:05:13,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5253b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:13, skipping insertion in model container [2020-10-13 14:05:13,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:05:13" (1/1) ... [2020-10-13 14:05:13,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:05:13,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:05:14,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:05:14,781 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:05:16,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:05:16,105 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:05:16,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16 WrapperNode [2020-10-13 14:05:16,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:05:16,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:05:16,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:05:16,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:05:16,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16" (1/1) ... [2020-10-13 14:05:16,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16" (1/1) ... [2020-10-13 14:05:16,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16" (1/1) ... [2020-10-13 14:05:16,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16" (1/1) ... [2020-10-13 14:05:16,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16" (1/1) ... [2020-10-13 14:05:16,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16" (1/1) ... [2020-10-13 14:05:16,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16" (1/1) ... [2020-10-13 14:05:16,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:05:16,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:05:16,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:05:16,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:05:16,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:05:16,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:05:16,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:05:16,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:05:16,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:05:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:05:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:05:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:05:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:05:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:05:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:05:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:05:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:05:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:05:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:05:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:05:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:05:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:05:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:05:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:05:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:05:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:05:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:05:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:05:20,840 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:05:20,840 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:05:20,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:05:20 BoogieIcfgContainer [2020-10-13 14:05:20,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:05:20,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:05:20,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:05:20,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:05:20,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:05:13" (1/3) ... [2020-10-13 14:05:20,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fde2bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:05:20, skipping insertion in model container [2020-10-13 14:05:20,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:05:16" (2/3) ... [2020-10-13 14:05:20,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fde2bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:05:20, skipping insertion in model container [2020-10-13 14:05:20,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:05:20" (3/3) ... [2020-10-13 14:05:20,860 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:05:20,872 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:05:20,881 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-13 14:05:20,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-13 14:05:20,927 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:05:20,927 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:05:20,927 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:05:20,927 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:05:20,928 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:05:20,928 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:05:20,928 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:05:20,928 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:05:20,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states. [2020-10-13 14:05:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-13 14:05:21,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:21,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:21,018 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:21,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:21,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1447603851, now seen corresponding path program 1 times [2020-10-13 14:05:21,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:21,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492339387] [2020-10-13 14:05:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:27,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-13 14:05:27,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:05:27,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 14:05:27,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:05:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:05:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-13 14:05:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:05:29,120 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 14:05:29,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:29,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:29,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:29,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 14:05:29,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:29,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492339387] [2020-10-13 14:05:29,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:29,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:05:29,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363817440] [2020-10-13 14:05:29,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:05:29,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:29,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:05:29,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:29,758 INFO L87 Difference]: Start difference. First operand 1393 states. Second operand 5 states. [2020-10-13 14:05:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:46,211 INFO L93 Difference]: Finished difference Result 4125 states and 7467 transitions. [2020-10-13 14:05:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:05:46,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 473 [2020-10-13 14:05:46,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:46,281 INFO L225 Difference]: With dead ends: 4125 [2020-10-13 14:05:46,281 INFO L226 Difference]: Without dead ends: 2741 [2020-10-13 14:05:46,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:05:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2020-10-13 14:05:46,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2688. [2020-10-13 14:05:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2688 states. [2020-10-13 14:05:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 4398 transitions. [2020-10-13 14:05:46,560 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 4398 transitions. Word has length 473 [2020-10-13 14:05:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:46,562 INFO L479 AbstractCegarLoop]: Abstraction has 2688 states and 4398 transitions. [2020-10-13 14:05:46,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:05:46,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 4398 transitions. [2020-10-13 14:05:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-13 14:05:46,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:46,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:46,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:05:46,592 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:46,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:46,593 INFO L82 PathProgramCache]: Analyzing trace with hash -369254340, now seen corresponding path program 1 times [2020-10-13 14:05:46,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:46,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644435424] [2020-10-13 14:05:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:51,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:52,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:52,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-13 14:05:52,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:05:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-13 14:05:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:05:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:05:52,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 14:05:52,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:05:53,556 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 14:05:53,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:53,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:53,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:53,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:53,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 14:05:53,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:54,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644435424] [2020-10-13 14:05:54,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:54,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:05:54,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252242339] [2020-10-13 14:05:54,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:05:54,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:05:54,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:54,099 INFO L87 Difference]: Start difference. First operand 2688 states and 4398 transitions. Second operand 5 states. [2020-10-13 14:06:10,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:06:10,187 INFO L93 Difference]: Finished difference Result 7925 states and 12959 transitions. [2020-10-13 14:06:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:06:10,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 475 [2020-10-13 14:06:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:06:10,218 INFO L225 Difference]: With dead ends: 7925 [2020-10-13 14:06:10,218 INFO L226 Difference]: Without dead ends: 5319 [2020-10-13 14:06:10,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:06:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2020-10-13 14:06:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 5277. [2020-10-13 14:06:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5277 states. [2020-10-13 14:06:10,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 8609 transitions. [2020-10-13 14:06:10,515 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 8609 transitions. Word has length 475 [2020-10-13 14:06:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:06:10,516 INFO L479 AbstractCegarLoop]: Abstraction has 5277 states and 8609 transitions. [2020-10-13 14:06:10,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:06:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 8609 transitions. [2020-10-13 14:06:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-13 14:06:10,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:10,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:06:10,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:06:10,540 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:10,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:10,540 INFO L82 PathProgramCache]: Analyzing trace with hash 481621780, now seen corresponding path program 1 times [2020-10-13 14:06:10,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:10,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676574545] [2020-10-13 14:06:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:11,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:13,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:13,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:14,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:15,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:15,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:15,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-13 14:06:15,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:06:15,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-13 14:06:15,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:06:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:06:15,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-13 14:06:15,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:06:17,211 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 14:06:17,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:17,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:17,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:17,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:17,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 14:06:17,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:17,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:17,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:17,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:17,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:06:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:06:17,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676574545] [2020-10-13 14:06:17,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:17,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:06:17,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767326154] [2020-10-13 14:06:17,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:06:17,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:17,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:06:17,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:06:17,979 INFO L87 Difference]: Start difference. First operand 5277 states and 8609 transitions. Second operand 5 states. [2020-10-13 14:06:34,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:06:34,109 INFO L93 Difference]: Finished difference Result 15546 states and 25333 transitions. [2020-10-13 14:06:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:06:34,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 479 [2020-10-13 14:06:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:06:34,164 INFO L225 Difference]: With dead ends: 15546 [2020-10-13 14:06:34,164 INFO L226 Difference]: Without dead ends: 10449 [2020-10-13 14:06:34,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:06:34,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10449 states. [2020-10-13 14:06:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10449 to 10418. [2020-10-13 14:06:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10418 states. [2020-10-13 14:06:35,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10418 states to 10418 states and 16936 transitions. [2020-10-13 14:06:35,006 INFO L78 Accepts]: Start accepts. Automaton has 10418 states and 16936 transitions. Word has length 479 [2020-10-13 14:06:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:06:35,007 INFO L479 AbstractCegarLoop]: Abstraction has 10418 states and 16936 transitions. [2020-10-13 14:06:35,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:06:35,013 INFO L276 IsEmpty]: Start isEmpty. Operand 10418 states and 16936 transitions. [2020-10-13 14:06:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-13 14:06:35,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:35,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:06:35,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:06:35,039 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:35,040 INFO L82 PathProgramCache]: Analyzing trace with hash -228981498, now seen corresponding path program 1 times [2020-10-13 14:06:35,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:35,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639288841] [2020-10-13 14:06:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:35,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:36,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:38,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:38,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:40,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:40,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-13 14:06:40,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:06:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-13 14:06:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:06:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:06:40,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:06:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:41,237 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 14:06:41,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:41,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:41,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:41,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:41,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:41,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:06:41,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:41,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:06:41,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639288841] [2020-10-13 14:06:41,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:41,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:06:41,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218292690] [2020-10-13 14:06:41,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:06:41,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:41,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:06:41,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:06:41,403 INFO L87 Difference]: Start difference. First operand 10418 states and 16936 transitions. Second operand 4 states. [2020-10-13 14:07:00,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:00,746 INFO L93 Difference]: Finished difference Result 31118 states and 50560 transitions. [2020-10-13 14:07:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:07:00,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 482 [2020-10-13 14:07:00,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:00,827 INFO L225 Difference]: With dead ends: 31118 [2020-10-13 14:07:00,827 INFO L226 Difference]: Without dead ends: 20760 [2020-10-13 14:07:00,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:07:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20760 states. [2020-10-13 14:07:01,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20760 to 10518. [2020-10-13 14:07:01,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10518 states. [2020-10-13 14:07:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10518 states to 10518 states and 17088 transitions. [2020-10-13 14:07:01,711 INFO L78 Accepts]: Start accepts. Automaton has 10518 states and 17088 transitions. Word has length 482 [2020-10-13 14:07:01,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:01,713 INFO L479 AbstractCegarLoop]: Abstraction has 10518 states and 17088 transitions. [2020-10-13 14:07:01,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:07:01,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10518 states and 17088 transitions. [2020-10-13 14:07:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-13 14:07:01,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:01,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:07:01,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:07:01,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:01,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1457658508, now seen corresponding path program 1 times [2020-10-13 14:07:01,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:01,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137052975] [2020-10-13 14:07:01,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:02,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:02,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:02,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:03,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:03,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:04,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:04,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:04,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:06,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:06,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-13 14:07:06,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 14:07:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 14:07:06,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:07:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:07:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-13 14:07:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:08,155 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 14:07:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:08,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:08,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:08,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:08,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:08,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:07:08,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:08,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:08,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:07:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:07:08,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137052975] [2020-10-13 14:07:08,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:08,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:07:08,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052789571] [2020-10-13 14:07:08,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:07:08,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:08,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:07:08,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:08,573 INFO L87 Difference]: Start difference. First operand 10518 states and 17088 transitions. Second operand 5 states. [2020-10-13 14:07:24,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:24,467 INFO L93 Difference]: Finished difference Result 31029 states and 50385 transitions. [2020-10-13 14:07:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:24,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 485 [2020-10-13 14:07:24,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:24,513 INFO L225 Difference]: With dead ends: 31029 [2020-10-13 14:07:24,513 INFO L226 Difference]: Without dead ends: 20687 [2020-10-13 14:07:24,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:07:24,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20687 states. [2020-10-13 14:07:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20687 to 20667. [2020-10-13 14:07:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20667 states. [2020-10-13 14:07:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20667 states to 20667 states and 33420 transitions. [2020-10-13 14:07:25,557 INFO L78 Accepts]: Start accepts. Automaton has 20667 states and 33420 transitions. Word has length 485 [2020-10-13 14:07:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:25,558 INFO L479 AbstractCegarLoop]: Abstraction has 20667 states and 33420 transitions. [2020-10-13 14:07:25,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:07:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 20667 states and 33420 transitions. [2020-10-13 14:07:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-13 14:07:25,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:25,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:07:25,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:07:25,605 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:25,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1611691533, now seen corresponding path program 1 times [2020-10-13 14:07:25,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:25,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211035357] [2020-10-13 14:07:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:26,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:27,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:31,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:31,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-13 14:07:31,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:07:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 14:07:31,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:07:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 14:07:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:07:31,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:31,998 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 14:07:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:32,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:32,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:32,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 14:07:32,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:07:32,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211035357] [2020-10-13 14:07:32,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:32,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:07:32,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113219495] [2020-10-13 14:07:32,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:07:32,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:32,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:07:32,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:32,200 INFO L87 Difference]: Start difference. First operand 20667 states and 33420 transitions. Second operand 5 states. [2020-10-13 14:07:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:50,174 INFO L93 Difference]: Finished difference Result 57591 states and 92546 transitions. [2020-10-13 14:07:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:50,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 485 [2020-10-13 14:07:50,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:50,409 INFO L225 Difference]: With dead ends: 57591 [2020-10-13 14:07:50,410 INFO L226 Difference]: Without dead ends: 39448 [2020-10-13 14:07:50,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:07:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39448 states. [2020-10-13 14:07:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39448 to 22673. [2020-10-13 14:07:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22673 states. [2020-10-13 14:07:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22673 states to 22673 states and 37020 transitions. [2020-10-13 14:07:51,775 INFO L78 Accepts]: Start accepts. Automaton has 22673 states and 37020 transitions. Word has length 485 [2020-10-13 14:07:51,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:51,775 INFO L479 AbstractCegarLoop]: Abstraction has 22673 states and 37020 transitions. [2020-10-13 14:07:51,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:07:51,775 INFO L276 IsEmpty]: Start isEmpty. Operand 22673 states and 37020 transitions. [2020-10-13 14:07:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-13 14:07:51,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:51,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:07:51,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:07:51,811 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash -224611838, now seen corresponding path program 1 times [2020-10-13 14:07:51,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:51,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265505757] [2020-10-13 14:07:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:56,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:56,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:56,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-13 14:07:56,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:07:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:07:56,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:07:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:07:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 14:07:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:57,768 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 14:07:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:57,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:57,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:57,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:57,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:57,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:07:57,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:57,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:57,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:07:57,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265505757] [2020-10-13 14:07:57,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:57,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:07:57,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342657724] [2020-10-13 14:07:57,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:07:57,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:57,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:07:57,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:57,968 INFO L87 Difference]: Start difference. First operand 22673 states and 37020 transitions. Second operand 5 states. [2020-10-13 14:08:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:08:17,028 INFO L93 Difference]: Finished difference Result 62075 states and 100525 transitions. [2020-10-13 14:08:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:08:17,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 487 [2020-10-13 14:08:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:08:17,115 INFO L225 Difference]: With dead ends: 62075 [2020-10-13 14:08:17,115 INFO L226 Difference]: Without dead ends: 43633 [2020-10-13 14:08:17,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:08:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43633 states. [2020-10-13 14:08:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43633 to 26948. [2020-10-13 14:08:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26948 states. [2020-10-13 14:08:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26948 states to 26948 states and 44645 transitions. [2020-10-13 14:08:18,795 INFO L78 Accepts]: Start accepts. Automaton has 26948 states and 44645 transitions. Word has length 487 [2020-10-13 14:08:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:08:18,795 INFO L479 AbstractCegarLoop]: Abstraction has 26948 states and 44645 transitions. [2020-10-13 14:08:18,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:08:18,795 INFO L276 IsEmpty]: Start isEmpty. Operand 26948 states and 44645 transitions. [2020-10-13 14:08:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2020-10-13 14:08:18,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:08:18,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:08:18,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:08:18,821 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:08:18,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:08:18,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1926756825, now seen corresponding path program 1 times [2020-10-13 14:08:18,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:08:18,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366791251] [2020-10-13 14:08:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:08:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:19,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:19,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:19,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:20,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:24,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:24,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-13 14:08:24,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:08:24,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-13 14:08:24,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:08:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:08:24,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:08:24,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:24,899 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 14:08:24,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:08:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:24,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:24,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:24,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:08:24,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:08:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:08:24,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:08:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:08:24,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:08:24,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:08:25,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366791251] [2020-10-13 14:08:25,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:08:25,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:08:25,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955776072] [2020-10-13 14:08:25,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:08:25,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:08:25,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:08:25,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:08:25,093 INFO L87 Difference]: Start difference. First operand 26948 states and 44645 transitions. Second operand 5 states. [2020-10-13 14:08:48,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:08:48,370 INFO L93 Difference]: Finished difference Result 71355 states and 116952 transitions. [2020-10-13 14:08:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:08:48,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 489 [2020-10-13 14:08:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:08:48,452 INFO L225 Difference]: With dead ends: 71355 [2020-10-13 14:08:48,452 INFO L226 Difference]: Without dead ends: 52214 [2020-10-13 14:08:48,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:08:48,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52214 states. [2020-10-13 14:08:50,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52214 to 35484. [2020-10-13 14:08:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35484 states. [2020-10-13 14:08:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35484 states to 35484 states and 59749 transitions. [2020-10-13 14:08:50,829 INFO L78 Accepts]: Start accepts. Automaton has 35484 states and 59749 transitions. Word has length 489 [2020-10-13 14:08:50,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:08:50,830 INFO L479 AbstractCegarLoop]: Abstraction has 35484 states and 59749 transitions. [2020-10-13 14:08:50,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:08:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 35484 states and 59749 transitions. [2020-10-13 14:08:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-13 14:08:50,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:08:50,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:08:50,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:08:50,874 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:08:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:08:50,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1682188649, now seen corresponding path program 1 times [2020-10-13 14:08:50,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:08:50,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731196788] [2020-10-13 14:08:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:08:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:51,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:51,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:51,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:53,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:54,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:54,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:54,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:54,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:55,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:55,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:56,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:56,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-13 14:08:56,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:08:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 14:08:56,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:08:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:08:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 14:08:56,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:56,986 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 14:08:56,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:08:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:57,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:57,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:57,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:08:57,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:08:57,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:08:57,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:08:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:08:57,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:08:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:08:57,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731196788] [2020-10-13 14:08:57,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:08:57,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:08:57,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387053182] [2020-10-13 14:08:57,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:08:57,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:08:57,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:08:57,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:08:57,282 INFO L87 Difference]: Start difference. First operand 35484 states and 59749 transitions. Second operand 4 states.