/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:49:10,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:49:10,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:49:10,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:49:10,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:49:10,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:49:10,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:49:10,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:49:10,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:49:10,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:49:10,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:49:10,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:49:10,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:49:10,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:49:10,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:49:10,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:49:10,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:49:10,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:49:10,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:49:10,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:49:10,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:49:10,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:49:10,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:49:10,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:49:10,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:49:10,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:49:10,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:49:10,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:49:10,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:49:10,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:49:10,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:49:10,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:49:10,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:49:10,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:49:10,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:49:10,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:49:10,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:49:10,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:49:10,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:49:10,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:49:10,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:49:10,717 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 14:49:10,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:49:10,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:49:10,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:49:10,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:49:10,758 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:49:10,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:49:10,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:49:10,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:49:10,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:49:10,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:49:10,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:49:10,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:49:10,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:49:10,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:49:10,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:49:10,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:49:10,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:49:10,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:49:10,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:49:10,762 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:49:10,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:49:10,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:49:10,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:49:10,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:49:10,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:49:10,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:49:10,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:49:10,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:49:10,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:49:10,764 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 14:49:11,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:49:11,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:49:11,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:49:11,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:49:11,072 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:49:11,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-13 14:49:11,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8476490d/82650c78459d425b9818a932d5d40faa/FLAG9efbe488a [2020-10-13 14:49:11,643 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:49:11,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-13 14:49:11,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8476490d/82650c78459d425b9818a932d5d40faa/FLAG9efbe488a [2020-10-13 14:49:11,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8476490d/82650c78459d425b9818a932d5d40faa [2020-10-13 14:49:11,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:49:11,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:49:11,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:49:11,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:49:11,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:49:11,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:49:11" (1/1) ... [2020-10-13 14:49:11,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b35810b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:11, skipping insertion in model container [2020-10-13 14:49:11,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:49:11" (1/1) ... [2020-10-13 14:49:11,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:49:11,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:49:12,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:49:12,567 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:49:12,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:49:12,720 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:49:12,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12 WrapperNode [2020-10-13 14:49:12,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:49:12,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:49:12,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:49:12,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:49:12,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12" (1/1) ... [2020-10-13 14:49:12,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12" (1/1) ... [2020-10-13 14:49:12,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12" (1/1) ... [2020-10-13 14:49:12,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12" (1/1) ... [2020-10-13 14:49:12,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12" (1/1) ... [2020-10-13 14:49:12,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12" (1/1) ... [2020-10-13 14:49:12,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12" (1/1) ... [2020-10-13 14:49:12,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:49:12,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:49:12,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:49:12,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:49:12,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12" (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 14:49:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:49:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:49:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:49:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:49:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:49:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:49:12,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:49:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:49:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:49:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:49:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:49:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:49:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:49:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:49:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:49:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:49:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:49:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:49:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:49:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:49:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:49:12,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:49:14,357 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:49:14,357 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:49:14,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:49:14 BoogieIcfgContainer [2020-10-13 14:49:14,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:49:14,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:49:14,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:49:14,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:49:14,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:49:11" (1/3) ... [2020-10-13 14:49:14,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed7e7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:49:14, skipping insertion in model container [2020-10-13 14:49:14,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:49:12" (2/3) ... [2020-10-13 14:49:14,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed7e7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:49:14, skipping insertion in model container [2020-10-13 14:49:14,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:49:14" (3/3) ... [2020-10-13 14:49:14,379 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-13 14:49:14,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:49:14,405 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:49:14,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:49:14,462 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:49:14,463 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:49:14,463 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:49:14,463 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:49:14,464 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:49:14,464 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:49:14,464 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:49:14,464 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:49:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-13 14:49:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 14:49:14,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:49:14,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:49:14,531 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:49:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:49:14,537 INFO L82 PathProgramCache]: Analyzing trace with hash -875220176, now seen corresponding path program 1 times [2020-10-13 14:49:14,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:49:14,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446796550] [2020-10-13 14:49:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:49:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:15,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:15,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:15,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:15,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:16,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:17,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:19,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:19,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 14:49:19,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:49:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 14:49:19,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:49:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 14:49:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:49:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:49:20,186 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:49:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:49:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:20,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:20,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:49:20,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:49:20,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:49:20,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:49:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:49:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:49:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:20,255 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 14:49:20,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446796550] [2020-10-13 14:49:20,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:49:20,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:49:20,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507833660] [2020-10-13 14:49:20,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:49:20,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:49:20,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:49:20,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:49:20,282 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 5 states. [2020-10-13 14:49:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:49:21,739 INFO L93 Difference]: Finished difference Result 442 states and 714 transitions. [2020-10-13 14:49:21,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:49:21,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-13 14:49:21,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:49:21,760 INFO L225 Difference]: With dead ends: 442 [2020-10-13 14:49:21,761 INFO L226 Difference]: Without dead ends: 331 [2020-10-13 14:49:21,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:49:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-13 14:49:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2020-10-13 14:49:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-13 14:49:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 535 transitions. [2020-10-13 14:49:21,835 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 535 transitions. Word has length 83 [2020-10-13 14:49:21,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:49:21,836 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 535 transitions. [2020-10-13 14:49:21,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:49:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 535 transitions. [2020-10-13 14:49:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 14:49:21,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:49:21,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:49:21,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:49:21,841 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:49:21,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:49:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash -2059933955, now seen corresponding path program 1 times [2020-10-13 14:49:21,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:49:21,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364496236] [2020-10-13 14:49:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:49:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:21,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:21,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:22,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:22,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:26,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:26,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 14:49:26,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:49:26,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-13 14:49:26,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:49:26,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:49:26,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:49:26,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-13 14:49:27,239 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:49:27,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:49:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:27,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:27,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:49:27,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:49:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:49:27,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:49:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:49:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:49:27,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:27,275 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 14:49:27,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364496236] [2020-10-13 14:49:27,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:49:27,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:49:27,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387083077] [2020-10-13 14:49:27,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:49:27,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:49:27,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:49:27,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:49:27,279 INFO L87 Difference]: Start difference. First operand 331 states and 535 transitions. Second operand 5 states. [2020-10-13 14:49:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:49:28,468 INFO L93 Difference]: Finished difference Result 528 states and 846 transitions. [2020-10-13 14:49:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:49:28,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-13 14:49:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:49:28,474 INFO L225 Difference]: With dead ends: 528 [2020-10-13 14:49:28,475 INFO L226 Difference]: Without dead ends: 331 [2020-10-13 14:49:28,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:49:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-13 14:49:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2020-10-13 14:49:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-13 14:49:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 533 transitions. [2020-10-13 14:49:28,524 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 533 transitions. Word has length 84 [2020-10-13 14:49:28,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:49:28,525 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 533 transitions. [2020-10-13 14:49:28,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:49:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 533 transitions. [2020-10-13 14:49:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-13 14:49:28,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:49:28,530 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] [2020-10-13 14:49:28,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:49:28,531 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:49:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:49:28,532 INFO L82 PathProgramCache]: Analyzing trace with hash -727817931, now seen corresponding path program 1 times [2020-10-13 14:49:28,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:49:28,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870624431] [2020-10-13 14:49:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:49:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:28,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:28,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:28,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:28,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:33,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:33,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 14:49:33,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:49:33,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:49:33,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:49:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 14:49:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:49:33,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:33,806 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:49:33,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:49:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:33,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:33,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:49:33,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:49:33,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 14:49:33,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:49:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:49:33,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:49:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:33,872 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 14:49:33,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870624431] [2020-10-13 14:49:33,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:49:33,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:49:33,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730912500] [2020-10-13 14:49:33,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:49:33,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:49:33,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:49:33,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:49:33,878 INFO L87 Difference]: Start difference. First operand 331 states and 533 transitions. Second operand 5 states. [2020-10-13 14:49:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:49:35,130 INFO L93 Difference]: Finished difference Result 624 states and 996 transitions. [2020-10-13 14:49:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:49:35,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-13 14:49:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:49:35,134 INFO L225 Difference]: With dead ends: 624 [2020-10-13 14:49:35,135 INFO L226 Difference]: Without dead ends: 331 [2020-10-13 14:49:35,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:49:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-13 14:49:35,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2020-10-13 14:49:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-13 14:49:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 501 transitions. [2020-10-13 14:49:35,152 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 501 transitions. Word has length 85 [2020-10-13 14:49:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:49:35,152 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 501 transitions. [2020-10-13 14:49:35,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:49:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 501 transitions. [2020-10-13 14:49:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 14:49:35,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:49:35,160 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] [2020-10-13 14:49:35,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:49:35,161 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:49:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:49:35,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1575918443, now seen corresponding path program 1 times [2020-10-13 14:49:35,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:49:35,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577129734] [2020-10-13 14:49:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:49:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:35,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:35,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:36,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:40,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:40,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 14:49:40,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:49:40,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:49:40,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:49:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 14:49:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:49:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:40,462 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:49:40,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:49:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:40,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:40,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:49:40,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:49:40,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:49:40,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:49:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:49:40,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:49:40,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:40,503 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 14:49:40,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577129734] [2020-10-13 14:49:40,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:49:40,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:49:40,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633272911] [2020-10-13 14:49:40,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:49:40,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:49:40,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:49:40,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:49:40,506 INFO L87 Difference]: Start difference. First operand 331 states and 501 transitions. Second operand 4 states. [2020-10-13 14:49:40,688 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 14:49:42,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:49:42,306 INFO L93 Difference]: Finished difference Result 704 states and 1088 transitions. [2020-10-13 14:49:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:49:42,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-13 14:49:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:49:42,312 INFO L225 Difference]: With dead ends: 704 [2020-10-13 14:49:42,313 INFO L226 Difference]: Without dead ends: 558 [2020-10-13 14:49:42,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:49:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-10-13 14:49:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 534. [2020-10-13 14:49:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-10-13 14:49:42,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 820 transitions. [2020-10-13 14:49:42,340 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 820 transitions. Word has length 116 [2020-10-13 14:49:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:49:42,340 INFO L479 AbstractCegarLoop]: Abstraction has 534 states and 820 transitions. [2020-10-13 14:49:42,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:49:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 820 transitions. [2020-10-13 14:49:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 14:49:42,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:49:42,343 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] [2020-10-13 14:49:42,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:49:42,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:49:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:49:42,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1831705075, now seen corresponding path program 1 times [2020-10-13 14:49:42,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:49:42,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447459537] [2020-10-13 14:49:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:49:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:42,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:42,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:42,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:42,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:44,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:47,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:47,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 14:49:47,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:49:47,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:49:47,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:49:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 14:49:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:49:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:47,653 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:49:47,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:49:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:47,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:47,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:47,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:49:47,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:49:47,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:49:47,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:47,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:49:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:49:47,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:49:47,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:49:47,722 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 14:49:47,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447459537] [2020-10-13 14:49:47,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:49:47,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:49:47,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973386011] [2020-10-13 14:49:47,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:49:47,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:49:47,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:49:47,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:49:47,725 INFO L87 Difference]: Start difference. First operand 534 states and 820 transitions. Second operand 4 states. [2020-10-13 14:49:47,983 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 14:49:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:49:49,762 INFO L93 Difference]: Finished difference Result 1266 states and 1971 transitions. [2020-10-13 14:49:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:49:49,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-13 14:49:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:49:49,781 INFO L225 Difference]: With dead ends: 1266 [2020-10-13 14:49:49,783 INFO L226 Difference]: Without dead ends: 972 [2020-10-13 14:49:49,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:49:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-10-13 14:49:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 926. [2020-10-13 14:49:49,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-10-13 14:49:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1433 transitions. [2020-10-13 14:49:49,872 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1433 transitions. Word has length 117 [2020-10-13 14:49:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:49:49,872 INFO L479 AbstractCegarLoop]: Abstraction has 926 states and 1433 transitions. [2020-10-13 14:49:49,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:49:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1433 transitions. [2020-10-13 14:49:49,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 14:49:49,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:49:49,880 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] [2020-10-13 14:49:49,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:49:49,880 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:49:49,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:49:49,881 INFO L82 PathProgramCache]: Analyzing trace with hash -422650888, now seen corresponding path program 1 times [2020-10-13 14:49:49,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:49:49,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042084519] [2020-10-13 14:49:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:49:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:50,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:50,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:50,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:50,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:54,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:54,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 14:49:54,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:49:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:49:54,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:49:54,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 14:49:54,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:49:54,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:55,149 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:49:55,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:49:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:55,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:55,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:49:55,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:49:55,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:49:55,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:49:55,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:49:55,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:49:55,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:49:55,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:49:55,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:49:55,189 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 14:49:55,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042084519] [2020-10-13 14:49:55,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:49:55,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:49:55,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019547412] [2020-10-13 14:49:55,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:49:55,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:49:55,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:49:55,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:49:55,193 INFO L87 Difference]: Start difference. First operand 926 states and 1433 transitions. Second operand 4 states. [2020-10-13 14:49:55,382 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 14:49:57,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:49:57,085 INFO L93 Difference]: Finished difference Result 2348 states and 3662 transitions. [2020-10-13 14:49:57,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:49:57,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-10-13 14:49:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:49:57,096 INFO L225 Difference]: With dead ends: 2348 [2020-10-13 14:49:57,096 INFO L226 Difference]: Without dead ends: 1754 [2020-10-13 14:49:57,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:49:57,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2020-10-13 14:49:57,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1664. [2020-10-13 14:49:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-10-13 14:49:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2580 transitions. [2020-10-13 14:49:57,178 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2580 transitions. Word has length 118 [2020-10-13 14:49:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:49:57,179 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2580 transitions. [2020-10-13 14:49:57,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:49:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2580 transitions. [2020-10-13 14:49:57,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 14:49:57,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:49:57,185 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] [2020-10-13 14:49:57,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:49:57,185 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:49:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:49:57,186 INFO L82 PathProgramCache]: Analyzing trace with hash 670053162, now seen corresponding path program 1 times [2020-10-13 14:49:57,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:49:57,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650067067] [2020-10-13 14:49:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:49:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:49:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:57,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:57,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:57,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:49:57,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:00,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:02,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:02,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 14:50:02,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:50:02,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:50:02,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:50:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 14:50:02,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:50:02,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:02,433 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:50:02,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:50:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:02,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:02,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:02,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:50:02,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:50:02,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:50:02,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:50:02,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:50:02,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:50:02,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:02,474 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 14:50:02,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650067067] [2020-10-13 14:50:02,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:50:02,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:50:02,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768979837] [2020-10-13 14:50:02,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:50:02,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:50:02,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:50:02,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:50:02,476 INFO L87 Difference]: Start difference. First operand 1664 states and 2580 transitions. Second operand 4 states. [2020-10-13 14:50:02,677 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 14:50:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:04,325 INFO L93 Difference]: Finished difference Result 3756 states and 5826 transitions. [2020-10-13 14:50:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:50:04,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-10-13 14:50:04,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:04,341 INFO L225 Difference]: With dead ends: 3756 [2020-10-13 14:50:04,341 INFO L226 Difference]: Without dead ends: 2938 [2020-10-13 14:50:04,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:50:04,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2020-10-13 14:50:04,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2760. [2020-10-13 14:50:04,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2760 states. [2020-10-13 14:50:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4252 transitions. [2020-10-13 14:50:04,470 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 4252 transitions. Word has length 119 [2020-10-13 14:50:04,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:04,471 INFO L479 AbstractCegarLoop]: Abstraction has 2760 states and 4252 transitions. [2020-10-13 14:50:04,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:50:04,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 4252 transitions. [2020-10-13 14:50:04,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:50:04,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:04,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:04,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:50:04,480 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:50:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:04,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2003615995, now seen corresponding path program 1 times [2020-10-13 14:50:04,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:04,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777096468] [2020-10-13 14:50:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:04,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:04,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:06,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:09,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:09,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:50:09,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:50:09,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:50:09,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:50:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 14:50:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:50:09,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:09,752 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:50:09,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:50:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:09,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:09,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:09,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:50:09,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:50:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:50:09,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:50:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:50:09,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:50:09,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:09,788 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 14:50:09,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777096468] [2020-10-13 14:50:09,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:50:09,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:50:09,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029976764] [2020-10-13 14:50:09,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:50:09,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:50:09,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:50:09,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:50:09,790 INFO L87 Difference]: Start difference. First operand 2760 states and 4252 transitions. Second operand 4 states. [2020-10-13 14:50:09,985 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 14:50:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:11,661 INFO L93 Difference]: Finished difference Result 5980 states and 9166 transitions. [2020-10-13 14:50:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:50:11,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-13 14:50:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:11,682 INFO L225 Difference]: With dead ends: 5980 [2020-10-13 14:50:11,682 INFO L226 Difference]: Without dead ends: 4762 [2020-10-13 14:50:11,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:50:11,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2020-10-13 14:50:11,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 4408. [2020-10-13 14:50:11,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4408 states. [2020-10-13 14:50:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 6700 transitions. [2020-10-13 14:50:11,886 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 6700 transitions. Word has length 120 [2020-10-13 14:50:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:11,886 INFO L479 AbstractCegarLoop]: Abstraction has 4408 states and 6700 transitions. [2020-10-13 14:50:11,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:50:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 6700 transitions. [2020-10-13 14:50:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 14:50:11,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:11,899 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] [2020-10-13 14:50:11,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:50:11,899 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:50:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:11,900 INFO L82 PathProgramCache]: Analyzing trace with hash -188661685, now seen corresponding path program 1 times [2020-10-13 14:50:11,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:11,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552401890] [2020-10-13 14:50:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:11,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:11,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:16,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:16,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 14:50:16,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:50:16,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:50:16,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:50:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:50:16,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:50:16,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:17,115 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:50:17,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:50:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:17,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:17,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:50:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:50:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:50:17,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:50:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:50:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:50:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:17,154 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 14:50:17,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552401890] [2020-10-13 14:50:17,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:50:17,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:50:17,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817618437] [2020-10-13 14:50:17,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:50:17,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:50:17,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:50:17,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:50:17,156 INFO L87 Difference]: Start difference. First operand 4408 states and 6700 transitions. Second operand 4 states. [2020-10-13 14:50:17,343 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 14:50:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:18,918 INFO L93 Difference]: Finished difference Result 7148 states and 10910 transitions. [2020-10-13 14:50:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:50:18,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-13 14:50:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:18,933 INFO L225 Difference]: With dead ends: 7148 [2020-10-13 14:50:18,933 INFO L226 Difference]: Without dead ends: 4007 [2020-10-13 14:50:18,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:50:18,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4007 states. [2020-10-13 14:50:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4007 to 4005. [2020-10-13 14:50:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4005 states. [2020-10-13 14:50:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6111 transitions. [2020-10-13 14:50:19,107 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6111 transitions. Word has length 121 [2020-10-13 14:50:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:19,108 INFO L479 AbstractCegarLoop]: Abstraction has 4005 states and 6111 transitions. [2020-10-13 14:50:19,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:50:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6111 transitions. [2020-10-13 14:50:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 14:50:19,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:19,119 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] [2020-10-13 14:50:19,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:50:19,119 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:50:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:19,120 INFO L82 PathProgramCache]: Analyzing trace with hash -780817879, now seen corresponding path program 1 times [2020-10-13 14:50:19,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:19,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061477367] [2020-10-13 14:50:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:19,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:19,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:22,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:22,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:24,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:24,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 14:50:24,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:50:24,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:50:24,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:50:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-13 14:50:24,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:50:24,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:24,323 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:50:24,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:50:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:24,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:24,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:24,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:50:24,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:50:24,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:50:24,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:50:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:50:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:50:24,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:24,352 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 14:50:24,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061477367] [2020-10-13 14:50:24,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:50:24,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:50:24,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482842324] [2020-10-13 14:50:24,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:50:24,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:50:24,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:50:24,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:50:24,354 INFO L87 Difference]: Start difference. First operand 4005 states and 6111 transitions. Second operand 4 states. [2020-10-13 14:50:24,541 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 14:50:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:25,869 INFO L93 Difference]: Finished difference Result 8666 states and 13261 transitions. [2020-10-13 14:50:25,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:50:25,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-13 14:50:25,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:25,891 INFO L225 Difference]: With dead ends: 8666 [2020-10-13 14:50:25,892 INFO L226 Difference]: Without dead ends: 6840 [2020-10-13 14:50:25,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:50:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2020-10-13 14:50:26,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 5765. [2020-10-13 14:50:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5765 states. [2020-10-13 14:50:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5765 states to 5765 states and 8783 transitions. [2020-10-13 14:50:26,173 INFO L78 Accepts]: Start accepts. Automaton has 5765 states and 8783 transitions. Word has length 122 [2020-10-13 14:50:26,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:26,174 INFO L479 AbstractCegarLoop]: Abstraction has 5765 states and 8783 transitions. [2020-10-13 14:50:26,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:50:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 5765 states and 8783 transitions. [2020-10-13 14:50:26,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 14:50:26,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:26,188 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] [2020-10-13 14:50:26,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:50:26,189 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:50:26,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:26,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1545917007, now seen corresponding path program 1 times [2020-10-13 14:50:26,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:26,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158566015] [2020-10-13 14:50:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:26,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:26,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:29,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:31,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:31,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 14:50:31,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:50:31,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:50:31,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:50:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-13 14:50:31,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:50:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:31,422 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:50:31,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:50:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:31,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:31,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:31,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:50:31,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:50:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:50:31,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:50:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:50:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:50:31,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:31,452 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 14:50:31,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158566015] [2020-10-13 14:50:31,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:50:31,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:50:31,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076080453] [2020-10-13 14:50:31,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:50:31,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:50:31,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:50:31,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:50:31,454 INFO L87 Difference]: Start difference. First operand 5765 states and 8783 transitions. Second operand 5 states. [2020-10-13 14:50:33,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:33,306 INFO L93 Difference]: Finished difference Result 8759 states and 13322 transitions. [2020-10-13 14:50:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:50:33,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-13 14:50:33,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:33,335 INFO L225 Difference]: With dead ends: 8759 [2020-10-13 14:50:33,336 INFO L226 Difference]: Without dead ends: 8757 [2020-10-13 14:50:33,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:50:33,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8757 states. [2020-10-13 14:50:33,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8757 to 5829. [2020-10-13 14:50:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5829 states. [2020-10-13 14:50:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 8847 transitions. [2020-10-13 14:50:33,602 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 8847 transitions. Word has length 123 [2020-10-13 14:50:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:33,603 INFO L479 AbstractCegarLoop]: Abstraction has 5829 states and 8847 transitions. [2020-10-13 14:50:33,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:50:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 8847 transitions. [2020-10-13 14:50:33,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 14:50:33,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:33,615 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] [2020-10-13 14:50:33,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:50:33,615 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:50:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash 688406936, now seen corresponding path program 1 times [2020-10-13 14:50:33,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:33,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950110474] [2020-10-13 14:50:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:33,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:33,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:33,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:37,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:38,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:38,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 14:50:38,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:50:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:50:38,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:50:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 14:50:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:50:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:38,818 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:50:38,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:50:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:38,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:38,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:38,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:50:38,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:50:38,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:50:38,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:50:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:50:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:50:38,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:38,842 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 14:50:38,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950110474] [2020-10-13 14:50:38,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:50:38,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:50:38,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760176861] [2020-10-13 14:50:38,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:50:38,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:50:38,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:50:38,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:50:38,845 INFO L87 Difference]: Start difference. First operand 5829 states and 8847 transitions. Second operand 4 states. [2020-10-13 14:50:39,023 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 14:50:40,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:40,728 INFO L93 Difference]: Finished difference Result 13241 states and 20065 transitions. [2020-10-13 14:50:40,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:50:40,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-13 14:50:40,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:40,748 INFO L225 Difference]: With dead ends: 13241 [2020-10-13 14:50:40,748 INFO L226 Difference]: Without dead ends: 7783 [2020-10-13 14:50:40,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:50:40,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2020-10-13 14:50:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 7781. [2020-10-13 14:50:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7781 states. [2020-10-13 14:50:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7781 states to 7781 states and 11727 transitions. [2020-10-13 14:50:41,171 INFO L78 Accepts]: Start accepts. Automaton has 7781 states and 11727 transitions. Word has length 124 [2020-10-13 14:50:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:41,171 INFO L479 AbstractCegarLoop]: Abstraction has 7781 states and 11727 transitions. [2020-10-13 14:50:41,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:50:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 7781 states and 11727 transitions. [2020-10-13 14:50:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 14:50:41,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:41,185 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] [2020-10-13 14:50:41,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:50:41,185 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:50:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1804329641, now seen corresponding path program 1 times [2020-10-13 14:50:41,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:41,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708911853] [2020-10-13 14:50:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:41,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:41,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:46,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:46,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 14:50:46,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:50:46,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:50:46,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:50:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 14:50:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:50:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:46,423 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:50:46,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:50:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:46,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:46,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:50:46,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:50:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:50:46,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:50:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:50:46,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:50:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:46,450 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 14:50:46,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708911853] [2020-10-13 14:50:46,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:50:46,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:50:46,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509076850] [2020-10-13 14:50:46,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:50:46,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:50:46,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:50:46,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:50:46,452 INFO L87 Difference]: Start difference. First operand 7781 states and 11727 transitions. Second operand 4 states. [2020-10-13 14:50:47,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:47,885 INFO L93 Difference]: Finished difference Result 12917 states and 19477 transitions. [2020-10-13 14:50:47,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:50:47,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-13 14:50:47,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:47,899 INFO L225 Difference]: With dead ends: 12917 [2020-10-13 14:50:47,899 INFO L226 Difference]: Without dead ends: 6419 [2020-10-13 14:50:47,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:50:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6419 states. [2020-10-13 14:50:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6419 to 6262. [2020-10-13 14:50:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6262 states. [2020-10-13 14:50:48,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6262 states to 6262 states and 9402 transitions. [2020-10-13 14:50:48,229 INFO L78 Accepts]: Start accepts. Automaton has 6262 states and 9402 transitions. Word has length 124 [2020-10-13 14:50:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:48,229 INFO L479 AbstractCegarLoop]: Abstraction has 6262 states and 9402 transitions. [2020-10-13 14:50:48,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:50:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 6262 states and 9402 transitions. [2020-10-13 14:50:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-13 14:50:48,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:48,236 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] [2020-10-13 14:50:48,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:50:48,236 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:50:48,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:48,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1357886460, now seen corresponding path program 1 times [2020-10-13 14:50:48,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:48,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631419594] [2020-10-13 14:50:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:48,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:48,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:53,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:53,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 14:50:53,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:50:53,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:50:53,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:50:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 14:50:53,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:50:53,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:53,448 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:50:53,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:50:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:53,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:50:53,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:50:53,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:50:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:50:53,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:50:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:50:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:50:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:50:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:50:53,475 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 14:50:53,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631419594] [2020-10-13 14:50:53,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:50:53,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:50:53,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62580324] [2020-10-13 14:50:53,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:50:53,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:50:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:50:53,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:50:53,476 INFO L87 Difference]: Start difference. First operand 6262 states and 9402 transitions. Second operand 4 states. [2020-10-13 14:50:53,678 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 14:50:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:50:55,162 INFO L93 Difference]: Finished difference Result 11395 states and 17127 transitions. [2020-10-13 14:50:55,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:50:55,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-13 14:50:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:50:55,185 INFO L225 Difference]: With dead ends: 11395 [2020-10-13 14:50:55,185 INFO L226 Difference]: Without dead ends: 5872 [2020-10-13 14:50:55,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:50:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5872 states. [2020-10-13 14:50:55,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5872 to 5870. [2020-10-13 14:50:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5870 states. [2020-10-13 14:50:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5870 states to 5870 states and 8806 transitions. [2020-10-13 14:50:55,632 INFO L78 Accepts]: Start accepts. Automaton has 5870 states and 8806 transitions. Word has length 125 [2020-10-13 14:50:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:50:55,632 INFO L479 AbstractCegarLoop]: Abstraction has 5870 states and 8806 transitions. [2020-10-13 14:50:55,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:50:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5870 states and 8806 transitions. [2020-10-13 14:50:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 14:50:55,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:50:55,641 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] [2020-10-13 14:50:55,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:50:55,641 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:50:55,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:50:55,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1787213648, now seen corresponding path program 1 times [2020-10-13 14:50:55,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:50:55,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18493298] [2020-10-13 14:50:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:50:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:50:55,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:55,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:56,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:50:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:00,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:00,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 14:51:00,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:51:00,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:51:00,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:00,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:51:00,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 14:51:00,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:51:00,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:00,862 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:00,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:00,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:00,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:00,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:00,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:00,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:51:00,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:00,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:00,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:00,898 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 14:51:00,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18493298] [2020-10-13 14:51:00,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:00,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:51:00,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301390978] [2020-10-13 14:51:00,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:51:00,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:00,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:51:00,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:00,901 INFO L87 Difference]: Start difference. First operand 5870 states and 8806 transitions. Second operand 4 states. [2020-10-13 14:51:01,124 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 14:51:02,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:02,436 INFO L93 Difference]: Finished difference Result 11071 states and 16641 transitions. [2020-10-13 14:51:02,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:51:02,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2020-10-13 14:51:02,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:02,443 INFO L225 Difference]: With dead ends: 11071 [2020-10-13 14:51:02,444 INFO L226 Difference]: Without dead ends: 5678 [2020-10-13 14:51:02,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:51:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states. [2020-10-13 14:51:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 5676. [2020-10-13 14:51:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5676 states. [2020-10-13 14:51:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 8518 transitions. [2020-10-13 14:51:02,807 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 8518 transitions. Word has length 126 [2020-10-13 14:51:02,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:02,808 INFO L479 AbstractCegarLoop]: Abstraction has 5676 states and 8518 transitions. [2020-10-13 14:51:02,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:51:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 8518 transitions. [2020-10-13 14:51:02,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 14:51:02,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:02,813 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] [2020-10-13 14:51:02,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:51:02,813 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:02,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1912846985, now seen corresponding path program 1 times [2020-10-13 14:51:02,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:02,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698483177] [2020-10-13 14:51:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:02,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:03,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:03,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:07,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:07,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 14:51:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:51:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:51:07,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:51:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 14:51:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:51:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:08,036 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:08,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:08,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:08,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:08,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:08,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:51:08,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:08,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:51:08,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698483177] [2020-10-13 14:51:08,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:08,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:51:08,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090488344] [2020-10-13 14:51:08,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:51:08,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:08,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:51:08,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:08,066 INFO L87 Difference]: Start difference. First operand 5676 states and 8518 transitions. Second operand 4 states. [2020-10-13 14:51:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:09,387 INFO L93 Difference]: Finished difference Result 8173 states and 12271 transitions. [2020-10-13 14:51:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:51:09,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-13 14:51:09,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:09,391 INFO L225 Difference]: With dead ends: 8173 [2020-10-13 14:51:09,391 INFO L226 Difference]: Without dead ends: 2974 [2020-10-13 14:51:09,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2020-10-13 14:51:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 2972. [2020-10-13 14:51:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2972 states. [2020-10-13 14:51:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 4416 transitions. [2020-10-13 14:51:09,594 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 4416 transitions. Word has length 127 [2020-10-13 14:51:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:09,594 INFO L479 AbstractCegarLoop]: Abstraction has 2972 states and 4416 transitions. [2020-10-13 14:51:09,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:51:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 4416 transitions. [2020-10-13 14:51:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 14:51:09,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:09,597 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] [2020-10-13 14:51:09,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:51:09,597 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:09,598 INFO L82 PathProgramCache]: Analyzing trace with hash -696540910, now seen corresponding path program 1 times [2020-10-13 14:51:09,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:09,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439984448] [2020-10-13 14:51:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:09,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:09,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:10,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:10,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:13,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:13,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:14,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:14,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 14:51:14,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:51:14,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:51:14,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:51:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:51:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:51:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:14,808 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:14,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:14,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:14,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:14,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:14,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:51:14,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:14,835 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 14:51:14,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439984448] [2020-10-13 14:51:14,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:14,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:51:14,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535575693] [2020-10-13 14:51:14,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:51:14,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:14,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:51:14,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:14,837 INFO L87 Difference]: Start difference. First operand 2972 states and 4416 transitions. Second operand 4 states. [2020-10-13 14:51:15,031 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 14:51:16,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:16,482 INFO L93 Difference]: Finished difference Result 5593 states and 8334 transitions. [2020-10-13 14:51:16,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:51:16,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-13 14:51:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:16,486 INFO L225 Difference]: With dead ends: 5593 [2020-10-13 14:51:16,486 INFO L226 Difference]: Without dead ends: 2884 [2020-10-13 14:51:16,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:51:16,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-10-13 14:51:16,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2882. [2020-10-13 14:51:16,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-10-13 14:51:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4284 transitions. [2020-10-13 14:51:16,605 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4284 transitions. Word has length 127 [2020-10-13 14:51:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:16,606 INFO L479 AbstractCegarLoop]: Abstraction has 2882 states and 4284 transitions. [2020-10-13 14:51:16,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:51:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4284 transitions. [2020-10-13 14:51:16,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 14:51:16,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:16,609 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] [2020-10-13 14:51:16,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:51:16,609 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:16,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1086974775, now seen corresponding path program 1 times [2020-10-13 14:51:16,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:16,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933099405] [2020-10-13 14:51:16,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:16,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:16,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:18,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:19,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:19,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:19,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:21,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:21,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 14:51:21,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:51:21,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:51:21,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:21,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:51:21,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:51:21,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:51:21,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:21,818 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:21,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:21,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:21,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:21,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:51:21,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:21,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:21,845 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 14:51:21,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933099405] [2020-10-13 14:51:21,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:21,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:51:21,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478766221] [2020-10-13 14:51:21,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:51:21,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:21,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:51:21,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:21,847 INFO L87 Difference]: Start difference. First operand 2882 states and 4284 transitions. Second operand 4 states. [2020-10-13 14:51:22,048 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 14:51:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:23,350 INFO L93 Difference]: Finished difference Result 5469 states and 8149 transitions. [2020-10-13 14:51:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:51:23,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-13 14:51:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:23,354 INFO L225 Difference]: With dead ends: 5469 [2020-10-13 14:51:23,354 INFO L226 Difference]: Without dead ends: 2818 [2020-10-13 14:51:23,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:51:23,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2020-10-13 14:51:23,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2816. [2020-10-13 14:51:23,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2816 states. [2020-10-13 14:51:23,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 4184 transitions. [2020-10-13 14:51:23,513 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 4184 transitions. Word has length 128 [2020-10-13 14:51:23,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:23,514 INFO L479 AbstractCegarLoop]: Abstraction has 2816 states and 4184 transitions. [2020-10-13 14:51:23,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:51:23,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 4184 transitions. [2020-10-13 14:51:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 14:51:23,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:23,516 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] [2020-10-13 14:51:23,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:51:23,517 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:23,517 INFO L82 PathProgramCache]: Analyzing trace with hash -649457618, now seen corresponding path program 1 times [2020-10-13 14:51:23,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:23,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072241194] [2020-10-13 14:51:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:23,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:23,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:23,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:25,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:25,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:28,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:28,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-13 14:51:28,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:51:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:51:28,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:51:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:51:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 14:51:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:28,783 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:28,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:28,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:28,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:28,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:28,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:51:28,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:28,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:28,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:28,839 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 14:51:28,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072241194] [2020-10-13 14:51:28,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:28,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:51:28,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268689646] [2020-10-13 14:51:28,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:51:28,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:28,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:51:28,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:51:28,841 INFO L87 Difference]: Start difference. First operand 2816 states and 4184 transitions. Second operand 8 states. [2020-10-13 14:51:32,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:32,577 INFO L93 Difference]: Finished difference Result 14168 states and 20827 transitions. [2020-10-13 14:51:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 14:51:32,578 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-13 14:51:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:32,589 INFO L225 Difference]: With dead ends: 14168 [2020-10-13 14:51:32,589 INFO L226 Difference]: Without dead ends: 11451 [2020-10-13 14:51:32,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:51:32,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11451 states. [2020-10-13 14:51:33,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11451 to 11443. [2020-10-13 14:51:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11443 states. [2020-10-13 14:51:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11443 states to 11443 states and 16710 transitions. [2020-10-13 14:51:33,189 INFO L78 Accepts]: Start accepts. Automaton has 11443 states and 16710 transitions. Word has length 129 [2020-10-13 14:51:33,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:33,189 INFO L479 AbstractCegarLoop]: Abstraction has 11443 states and 16710 transitions. [2020-10-13 14:51:33,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:51:33,189 INFO L276 IsEmpty]: Start isEmpty. Operand 11443 states and 16710 transitions. [2020-10-13 14:51:33,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 14:51:33,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:33,200 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] [2020-10-13 14:51:33,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:51:33,200 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:33,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:33,200 INFO L82 PathProgramCache]: Analyzing trace with hash 964158288, now seen corresponding path program 1 times [2020-10-13 14:51:33,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:33,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298369965] [2020-10-13 14:51:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:33,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:33,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:33,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:33,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:36,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:37,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:37,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:38,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:38,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:38,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:38,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 14:51:38,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:51:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:51:38,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:51:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 14:51:38,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:51:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:38,419 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:38,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:38,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:38,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:38,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:38,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 14:51:38,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:38,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:38,447 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 14:51:38,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298369965] [2020-10-13 14:51:38,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:38,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:51:38,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852571524] [2020-10-13 14:51:38,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:51:38,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:38,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:51:38,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:38,450 INFO L87 Difference]: Start difference. First operand 11443 states and 16710 transitions. Second operand 4 states. [2020-10-13 14:51:39,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:39,922 INFO L93 Difference]: Finished difference Result 16669 states and 24361 transitions. [2020-10-13 14:51:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:51:39,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-13 14:51:39,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:39,930 INFO L225 Difference]: With dead ends: 16669 [2020-10-13 14:51:39,930 INFO L226 Difference]: Without dead ends: 6023 [2020-10-13 14:51:39,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6023 states. [2020-10-13 14:51:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6023 to 6021. [2020-10-13 14:51:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6021 states. [2020-10-13 14:51:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6021 states to 6021 states and 8717 transitions. [2020-10-13 14:51:40,256 INFO L78 Accepts]: Start accepts. Automaton has 6021 states and 8717 transitions. Word has length 131 [2020-10-13 14:51:40,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:40,257 INFO L479 AbstractCegarLoop]: Abstraction has 6021 states and 8717 transitions. [2020-10-13 14:51:40,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:51:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6021 states and 8717 transitions. [2020-10-13 14:51:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 14:51:40,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:40,262 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] [2020-10-13 14:51:40,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:51:40,263 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:40,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2047481690, now seen corresponding path program 1 times [2020-10-13 14:51:40,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:40,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721395953] [2020-10-13 14:51:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:40,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:40,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:43,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:43,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:43,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:45,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:45,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 14:51:45,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:51:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:51:45,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:51:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-13 14:51:45,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:51:45,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:45,539 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:45,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:45,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:45,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:45,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:45,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:51:45,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:45,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:45,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:45,567 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 14:51:45,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721395953] [2020-10-13 14:51:45,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:45,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:51:45,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886467646] [2020-10-13 14:51:45,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:51:45,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:45,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:51:45,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:45,569 INFO L87 Difference]: Start difference. First operand 6021 states and 8717 transitions. Second operand 4 states. [2020-10-13 14:51:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:46,722 INFO L93 Difference]: Finished difference Result 8651 states and 12537 transitions. [2020-10-13 14:51:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:51:46,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-13 14:51:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:46,727 INFO L225 Difference]: With dead ends: 8651 [2020-10-13 14:51:46,727 INFO L226 Difference]: Without dead ends: 3217 [2020-10-13 14:51:46,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:46,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2020-10-13 14:51:46,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 3215. [2020-10-13 14:51:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2020-10-13 14:51:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 4612 transitions. [2020-10-13 14:51:46,896 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 4612 transitions. Word has length 131 [2020-10-13 14:51:46,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:46,897 INFO L479 AbstractCegarLoop]: Abstraction has 3215 states and 4612 transitions. [2020-10-13 14:51:46,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:51:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 4612 transitions. [2020-10-13 14:51:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-13 14:51:46,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:46,899 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] [2020-10-13 14:51:46,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:51:46,900 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:46,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:46,900 INFO L82 PathProgramCache]: Analyzing trace with hash -208452524, now seen corresponding path program 1 times [2020-10-13 14:51:46,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:46,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462559332] [2020-10-13 14:51:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:46,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:46,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:46,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:47,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:50,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:51,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:51,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-13 14:51:51,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:51:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:51:51,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:51:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 14:51:51,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:51:51,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:52,119 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:52,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:52,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:52,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:51:52,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:52,147 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 14:51:52,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462559332] [2020-10-13 14:51:52,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:52,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:51:52,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699997911] [2020-10-13 14:51:52,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:51:52,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:52,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:51:52,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:52,149 INFO L87 Difference]: Start difference. First operand 3215 states and 4612 transitions. Second operand 4 states. [2020-10-13 14:51:53,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:53,148 INFO L93 Difference]: Finished difference Result 4479 states and 6434 transitions. [2020-10-13 14:51:53,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:51:53,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-13 14:51:53,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:53,154 INFO L225 Difference]: With dead ends: 4479 [2020-10-13 14:51:53,154 INFO L226 Difference]: Without dead ends: 1678 [2020-10-13 14:51:53,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-10-13 14:51:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1676. [2020-10-13 14:51:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2020-10-13 14:51:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2375 transitions. [2020-10-13 14:51:53,251 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2375 transitions. Word has length 131 [2020-10-13 14:51:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:53,251 INFO L479 AbstractCegarLoop]: Abstraction has 1676 states and 2375 transitions. [2020-10-13 14:51:53,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:51:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2375 transitions. [2020-10-13 14:51:53,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-13 14:51:53,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:53,255 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] [2020-10-13 14:51:53,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:51:53,255 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:53,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:53,256 INFO L82 PathProgramCache]: Analyzing trace with hash -716833970, now seen corresponding path program 1 times [2020-10-13 14:51:53,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:53,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275271269] [2020-10-13 14:51:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:53,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:53,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:53,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:54,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:54,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:56,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:56,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-13 14:51:56,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:51:56,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2797 [2020-10-13 14:51:56,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:51:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 14:51:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 14:51:56,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:56,250 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:56,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:56,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:56,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:56,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:56,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:56,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:51:56,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:51:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:51:56,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:56,279 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 14:51:56,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275271269] [2020-10-13 14:51:56,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:56,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:51:56,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078902175] [2020-10-13 14:51:56,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:51:56,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:56,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:51:56,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:56,281 INFO L87 Difference]: Start difference. First operand 1676 states and 2375 transitions. Second operand 4 states. [2020-10-13 14:51:57,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:51:57,698 INFO L93 Difference]: Finished difference Result 3703 states and 5278 transitions. [2020-10-13 14:51:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:51:57,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-13 14:51:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:51:57,701 INFO L225 Difference]: With dead ends: 3703 [2020-10-13 14:51:57,701 INFO L226 Difference]: Without dead ends: 2441 [2020-10-13 14:51:57,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:51:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2020-10-13 14:51:57,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 2441. [2020-10-13 14:51:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2441 states. [2020-10-13 14:51:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 3457 transitions. [2020-10-13 14:51:57,863 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 3457 transitions. Word has length 133 [2020-10-13 14:51:57,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:51:57,864 INFO L479 AbstractCegarLoop]: Abstraction has 2441 states and 3457 transitions. [2020-10-13 14:51:57,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:51:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 3457 transitions. [2020-10-13 14:51:57,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 14:51:57,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:51:57,867 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:51:57,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:51:57,867 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:51:57,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:51:57,868 INFO L82 PathProgramCache]: Analyzing trace with hash 407970155, now seen corresponding path program 1 times [2020-10-13 14:51:57,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:51:57,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520172687] [2020-10-13 14:51:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:51:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:58,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:58,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:58,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 14:51:58,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:51:58,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-10-13 14:51:58,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:51:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:51:58,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:51:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:58,725 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:51:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:51:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:51:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:51:58,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:51:58,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:51:58,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:51:58,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:51:58,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:51:58,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:51:58,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:51:58,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:51:58,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:51:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 14:51:58,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520172687] [2020-10-13 14:51:58,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:51:58,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:51:58,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813620679] [2020-10-13 14:51:58,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:51:58,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:51:58,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:51:58,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:51:58,770 INFO L87 Difference]: Start difference. First operand 2441 states and 3457 transitions. Second operand 6 states. [2020-10-13 14:51:58,983 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 14:52:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:00,342 INFO L93 Difference]: Finished difference Result 6981 states and 9892 transitions. [2020-10-13 14:52:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:52:00,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-13 14:52:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:00,347 INFO L225 Difference]: With dead ends: 6981 [2020-10-13 14:52:00,348 INFO L226 Difference]: Without dead ends: 4588 [2020-10-13 14:52:00,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:52:00,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4588 states. [2020-10-13 14:52:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4588 to 4586. [2020-10-13 14:52:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4586 states. [2020-10-13 14:52:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4586 states to 4586 states and 6441 transitions. [2020-10-13 14:52:00,639 INFO L78 Accepts]: Start accepts. Automaton has 4586 states and 6441 transitions. Word has length 158 [2020-10-13 14:52:00,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:00,640 INFO L479 AbstractCegarLoop]: Abstraction has 4586 states and 6441 transitions. [2020-10-13 14:52:00,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:52:00,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4586 states and 6441 transitions. [2020-10-13 14:52:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 14:52:00,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:00,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:00,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:52:00,643 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:00,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:00,644 INFO L82 PathProgramCache]: Analyzing trace with hash -579008095, now seen corresponding path program 1 times [2020-10-13 14:52:00,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:00,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282640894] [2020-10-13 14:52:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:00,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:00,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:00,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:00,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:05,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:05,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 14:52:05,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:52:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:52:05,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:52:05,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:52:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 14:52:05,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:05,895 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2020-10-13 14:52:06,084 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:52:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:06,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:06,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:06,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:52:06,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:06,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:06,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 14:52:06,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282640894] [2020-10-13 14:52:06,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:06,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:52:06,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071251114] [2020-10-13 14:52:06,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:52:06,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:06,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:52:06,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:52:06,127 INFO L87 Difference]: Start difference. First operand 4586 states and 6441 transitions. Second operand 9 states. [2020-10-13 14:52:06,358 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:52:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:11,755 INFO L93 Difference]: Finished difference Result 27485 states and 38552 transitions. [2020-10-13 14:52:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 14:52:11,756 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-13 14:52:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:11,781 INFO L225 Difference]: With dead ends: 27485 [2020-10-13 14:52:11,781 INFO L226 Difference]: Without dead ends: 23214 [2020-10-13 14:52:11,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-13 14:52:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23214 states. [2020-10-13 14:52:12,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23214 to 4793. [2020-10-13 14:52:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4793 states. [2020-10-13 14:52:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4793 states to 4793 states and 6716 transitions. [2020-10-13 14:52:12,345 INFO L78 Accepts]: Start accepts. Automaton has 4793 states and 6716 transitions. Word has length 158 [2020-10-13 14:52:12,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:12,345 INFO L479 AbstractCegarLoop]: Abstraction has 4793 states and 6716 transitions. [2020-10-13 14:52:12,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:52:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4793 states and 6716 transitions. [2020-10-13 14:52:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 14:52:12,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:12,348 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:12,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:52:12,349 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:12,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1787305231, now seen corresponding path program 1 times [2020-10-13 14:52:12,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:12,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796065493] [2020-10-13 14:52:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:12,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:12,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:12,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:13,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:13,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 14:52:13,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:52:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-10-13 14:52:13,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:52:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:52:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:52:13,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:13,445 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:52:13,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:13,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:13,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:13,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:52:13,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:52:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:13,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:52:13,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 14:52:13,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796065493] [2020-10-13 14:52:13,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:13,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:52:13,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7365810] [2020-10-13 14:52:13,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:52:13,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:13,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:52:13,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:52:13,484 INFO L87 Difference]: Start difference. First operand 4793 states and 6716 transitions. Second operand 6 states. [2020-10-13 14:52:13,697 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 14:52:15,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:15,705 INFO L93 Difference]: Finished difference Result 13699 states and 19180 transitions. [2020-10-13 14:52:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:52:15,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-13 14:52:15,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:15,717 INFO L225 Difference]: With dead ends: 13699 [2020-10-13 14:52:15,718 INFO L226 Difference]: Without dead ends: 8984 [2020-10-13 14:52:15,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:52:15,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8984 states. [2020-10-13 14:52:16,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8984 to 8982. [2020-10-13 14:52:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8982 states. [2020-10-13 14:52:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8982 states to 8982 states and 12476 transitions. [2020-10-13 14:52:16,673 INFO L78 Accepts]: Start accepts. Automaton has 8982 states and 12476 transitions. Word has length 158 [2020-10-13 14:52:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:16,673 INFO L479 AbstractCegarLoop]: Abstraction has 8982 states and 12476 transitions. [2020-10-13 14:52:16,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:52:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8982 states and 12476 transitions. [2020-10-13 14:52:16,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 14:52:16,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:16,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:16,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 14:52:16,679 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:16,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:16,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1416795367, now seen corresponding path program 1 times [2020-10-13 14:52:16,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:16,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240243334] [2020-10-13 14:52:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:16,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:18,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:18,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:21,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:21,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 14:52:21,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:52:21,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:52:21,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:52:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:52:21,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-13 14:52:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:22,048 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:52:22,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:22,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:22,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:22,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:22,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:22,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:52:22,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:22,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:22,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:22,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 14:52:22,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240243334] [2020-10-13 14:52:22,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:22,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:52:22,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110452803] [2020-10-13 14:52:22,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:52:22,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:22,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:52:22,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:52:22,091 INFO L87 Difference]: Start difference. First operand 8982 states and 12476 transitions. Second operand 9 states. [2020-10-13 14:52:22,322 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:52:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:30,974 INFO L93 Difference]: Finished difference Result 50836 states and 70498 transitions. [2020-10-13 14:52:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 14:52:30,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-13 14:52:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:31,023 INFO L225 Difference]: With dead ends: 50836 [2020-10-13 14:52:31,023 INFO L226 Difference]: Without dead ends: 43968 [2020-10-13 14:52:31,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-13 14:52:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43968 states. [2020-10-13 14:52:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43968 to 9364. [2020-10-13 14:52:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9364 states. [2020-10-13 14:52:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9364 states to 9364 states and 12982 transitions. [2020-10-13 14:52:32,403 INFO L78 Accepts]: Start accepts. Automaton has 9364 states and 12982 transitions. Word has length 158 [2020-10-13 14:52:32,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:32,404 INFO L479 AbstractCegarLoop]: Abstraction has 9364 states and 12982 transitions. [2020-10-13 14:52:32,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:52:32,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9364 states and 12982 transitions. [2020-10-13 14:52:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 14:52:32,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:32,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:32,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 14:52:32,410 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:32,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:32,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2030478699, now seen corresponding path program 1 times [2020-10-13 14:52:32,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:32,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652303536] [2020-10-13 14:52:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:33,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:33,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 14:52:33,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:52:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 670 [2020-10-13 14:52:33,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:52:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:52:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 14:52:33,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:33,305 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:52:33,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:33,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:33,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:33,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:33,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:33,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:52:33,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:52:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:52:33,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 14:52:33,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652303536] [2020-10-13 14:52:33,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:33,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:52:33,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416988059] [2020-10-13 14:52:33,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:52:33,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:33,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:52:33,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:52:33,349 INFO L87 Difference]: Start difference. First operand 9364 states and 12982 transitions. Second operand 6 states. [2020-10-13 14:52:33,557 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-13 14:52:36,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:52:36,974 INFO L93 Difference]: Finished difference Result 26777 states and 37069 transitions. [2020-10-13 14:52:36,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:52:36,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-13 14:52:36,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:52:36,993 INFO L225 Difference]: With dead ends: 26777 [2020-10-13 14:52:36,993 INFO L226 Difference]: Without dead ends: 17560 [2020-10-13 14:52:37,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:52:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17560 states. [2020-10-13 14:52:40,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17560 to 17558. [2020-10-13 14:52:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17558 states. [2020-10-13 14:52:40,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17558 states to 17558 states and 24133 transitions. [2020-10-13 14:52:40,037 INFO L78 Accepts]: Start accepts. Automaton has 17558 states and 24133 transitions. Word has length 158 [2020-10-13 14:52:40,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:52:40,037 INFO L479 AbstractCegarLoop]: Abstraction has 17558 states and 24133 transitions. [2020-10-13 14:52:40,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:52:40,037 INFO L276 IsEmpty]: Start isEmpty. Operand 17558 states and 24133 transitions. [2020-10-13 14:52:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 14:52:40,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:52:40,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:40,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 14:52:40,054 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:52:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:52:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1022834977, now seen corresponding path program 1 times [2020-10-13 14:52:40,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:52:40,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067957192] [2020-10-13 14:52:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:52:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:40,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:40,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:41,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:45,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:45,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 14:52:45,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:52:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:52:45,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:52:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:52:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 14:52:45,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:45,290 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-13 14:52:45,482 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 14:52:45,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:52:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:52:45,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:52:45,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:52:45,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:52:45,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:52:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:52:45,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:52:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:52:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:52:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:52:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:52:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 14:52:45,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067957192] [2020-10-13 14:52:45,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:52:45,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:52:45,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882339493] [2020-10-13 14:52:45,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:52:45,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:52:45,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:52:45,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:52:45,527 INFO L87 Difference]: Start difference. First operand 17558 states and 24133 transitions. Second operand 9 states. [2020-10-13 14:52:45,755 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 14:53:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:53:00,881 INFO L93 Difference]: Finished difference Result 92006 states and 126249 transitions. [2020-10-13 14:53:00,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 14:53:00,881 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 158 [2020-10-13 14:53:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:53:00,970 INFO L225 Difference]: With dead ends: 92006 [2020-10-13 14:53:00,970 INFO L226 Difference]: Without dead ends: 81648 [2020-10-13 14:53:00,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-13 14:53:01,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81648 states. [2020-10-13 14:53:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81648 to 18206. [2020-10-13 14:53:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18206 states. [2020-10-13 14:53:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18206 states to 18206 states and 24989 transitions. [2020-10-13 14:53:04,108 INFO L78 Accepts]: Start accepts. Automaton has 18206 states and 24989 transitions. Word has length 158 [2020-10-13 14:53:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:53:04,109 INFO L479 AbstractCegarLoop]: Abstraction has 18206 states and 24989 transitions. [2020-10-13 14:53:04,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:53:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 18206 states and 24989 transitions. [2020-10-13 14:53:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 14:53:04,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:53:04,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:04,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 14:53:04,120 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:53:04,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:53:04,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1274382607, now seen corresponding path program 1 times [2020-10-13 14:53:04,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:53:04,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687583542] [2020-10-13 14:53:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:53:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:53:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:53:04,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:53:04,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 14:53:04,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:53:04,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-13 14:53:04,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:53:04,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:53:04,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:53:04,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 14:53:04,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0