/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:35:03,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:35:03,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:35:03,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:35:03,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:35:03,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:35:03,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:35:03,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:35:03,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:35:03,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:35:03,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:35:03,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:35:03,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:35:03,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:35:03,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:35:03,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:35:03,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:35:03,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:35:03,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:35:03,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:35:03,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:35:03,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:35:03,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:35:03,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:35:03,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:35:03,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:35:03,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:35:03,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:35:03,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:35:03,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:35:03,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:35:03,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:35:03,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:35:03,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:35:03,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:35:03,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:35:03,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:35:03,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:35:03,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:35:03,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:35:03,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:35:03,731 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 [2020-10-14 08:35:03,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:35:03,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:35:03,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:35:03,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:35:03,756 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:35:03,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:35:03,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:35:03,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:35:03,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:35:03,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:35:03,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:35:03,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:35:03,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:35:03,758 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:35:03,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:35:03,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:35:03,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:35:03,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:35:03,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:35:03,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:35:03,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:35:03,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:35:03,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:35:03,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:35:03,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:35:03,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:35:03,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:35:03,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:35:03,761 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:35:03,761 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:35:04,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:35:04,138 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:35:04,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:35:04,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:35:04,144 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:35:04,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:35:04,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26414f9b9/395de6db77764d358f4c46a1298d44c1/FLAGeaf332f33 [2020-10-14 08:35:04,861 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:35:04,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:35:04,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26414f9b9/395de6db77764d358f4c46a1298d44c1/FLAGeaf332f33 [2020-10-14 08:35:05,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26414f9b9/395de6db77764d358f4c46a1298d44c1 [2020-10-14 08:35:05,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:35:05,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:35:05,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:35:05,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:35:05,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:35:05,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:35:05" (1/1) ... [2020-10-14 08:35:05,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4122bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:05, skipping insertion in model container [2020-10-14 08:35:05,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:35:05" (1/1) ... [2020-10-14 08:35:05,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:35:05,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:35:06,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:35:06,657 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:35:07,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:35:07,658 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:35:07,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07 WrapperNode [2020-10-14 08:35:07,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:35:07,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:35:07,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:35:07,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:35:07,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07" (1/1) ... [2020-10-14 08:35:07,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07" (1/1) ... [2020-10-14 08:35:07,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07" (1/1) ... [2020-10-14 08:35:07,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07" (1/1) ... [2020-10-14 08:35:07,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07" (1/1) ... [2020-10-14 08:35:07,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07" (1/1) ... [2020-10-14 08:35:07,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07" (1/1) ... [2020-10-14 08:35:07,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:35:07,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:35:07,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:35:07,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:35:07,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07" (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 [2020-10-14 08:35:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:35:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:35:07,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:35:07,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:35:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:35:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:35:07,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:35:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:35:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:35:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:35:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:35:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:35:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:35:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:35:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:35:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:35:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:35:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:35:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:35:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:35:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:35:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:35:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:35:11,844 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:35:11,845 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:35:11,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:35:11 BoogieIcfgContainer [2020-10-14 08:35:11,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:35:11,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:35:11,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:35:11,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:35:11,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:35:05" (1/3) ... [2020-10-14 08:35:11,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c640950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:35:11, skipping insertion in model container [2020-10-14 08:35:11,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:35:07" (2/3) ... [2020-10-14 08:35:11,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c640950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:35:11, skipping insertion in model container [2020-10-14 08:35:11,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:35:11" (3/3) ... [2020-10-14 08:35:11,875 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:35:11,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:35:11,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:35:11,916 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:35:11,948 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:35:11,948 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:35:11,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:35:11,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:35:11,949 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:35:11,949 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:35:11,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:35:11,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:35:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states. [2020-10-14 08:35:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-14 08:35:12,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:35:12,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:35:12,034 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:35:12,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:35:12,041 INFO L82 PathProgramCache]: Analyzing trace with hash -866812329, now seen corresponding path program 1 times [2020-10-14 08:35:12,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:35:12,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423078565] [2020-10-14 08:35:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:35:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:16,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:18,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:18,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-14 08:35:18,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:35:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5225 [2020-10-14 08:35:18,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:18,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:35:18,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 172 [2020-10-14 08:35:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 08:35:18,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:35:19,676 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:35:19,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:35:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:19,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:19,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:35:19,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:35:19,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 08:35:19,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:19,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:35:19,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:35:19,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:35:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:35:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:35:19,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423078565] [2020-10-14 08:35:19,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:35:19,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:35:19,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798383656] [2020-10-14 08:35:19,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:35:19,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:35:19,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:35:19,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:35:19,991 INFO L87 Difference]: Start difference. First operand 1340 states. Second operand 4 states. [2020-10-14 08:35:20,738 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 383 [2020-10-14 08:35:30,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:35:30,009 INFO L93 Difference]: Finished difference Result 2262 states and 4032 transitions. [2020-10-14 08:35:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:35:30,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 476 [2020-10-14 08:35:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:35:30,049 INFO L225 Difference]: With dead ends: 2262 [2020-10-14 08:35:30,049 INFO L226 Difference]: Without dead ends: 1993 [2020-10-14 08:35:30,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:35:30,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-10-14 08:35:30,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1991. [2020-10-14 08:35:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-10-14 08:35:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 3230 transitions. [2020-10-14 08:35:30,219 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 3230 transitions. Word has length 476 [2020-10-14 08:35:30,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:35:30,225 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 3230 transitions. [2020-10-14 08:35:30,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:35:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 3230 transitions. [2020-10-14 08:35:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-14 08:35:30,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:35:30,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:35:30,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:35:30,244 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:35:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:35:30,245 INFO L82 PathProgramCache]: Analyzing trace with hash 168046341, now seen corresponding path program 1 times [2020-10-14 08:35:30,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:35:30,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245020387] [2020-10-14 08:35:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:35:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:33,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:33,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:34,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:34,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:34,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:35,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:35,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-14 08:35:35,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:35:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 08:35:35,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:35,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:35:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:35:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-14 08:35:35,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 08:35:37,542 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:35:37,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:35:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:37,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:37,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:35:37,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:35:37,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 08:35:37,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:37,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:35:37,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:35:37,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:35:37,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:35:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:35:38,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245020387] [2020-10-14 08:35:38,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:35:38,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:35:38,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316539023] [2020-10-14 08:35:38,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:35:38,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:35:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:35:38,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:35:38,133 INFO L87 Difference]: Start difference. First operand 1991 states and 3230 transitions. Second operand 5 states. [2020-10-14 08:35:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:35:53,285 INFO L93 Difference]: Finished difference Result 5899 states and 9569 transitions. [2020-10-14 08:35:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:35:53,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 476 [2020-10-14 08:35:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:35:53,312 INFO L225 Difference]: With dead ends: 5899 [2020-10-14 08:35:53,313 INFO L226 Difference]: Without dead ends: 3927 [2020-10-14 08:35:53,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:35:53,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2020-10-14 08:35:53,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3925. [2020-10-14 08:35:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3925 states. [2020-10-14 08:35:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 6342 transitions. [2020-10-14 08:35:53,507 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 6342 transitions. Word has length 476 [2020-10-14 08:35:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:35:53,508 INFO L479 AbstractCegarLoop]: Abstraction has 3925 states and 6342 transitions. [2020-10-14 08:35:53,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:35:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 6342 transitions. [2020-10-14 08:35:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-14 08:35:53,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:35:53,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:35:53,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:35:53,532 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:35:53,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:35:53,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1662673134, now seen corresponding path program 1 times [2020-10-14 08:35:53,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:35:53,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553896986] [2020-10-14 08:35:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:35:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:54,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:54,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:55,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:56,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:58,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:58,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:58,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:58,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-14 08:35:58,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:35:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 08:35:58,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:58,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:35:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:35:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 08:35:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:35:59,828 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:35:59,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:35:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:35:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:35:59,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:35:59,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:35:59,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:35:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 08:35:59,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:35:59,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:35:59,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:35:59,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:35:59,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:35:59,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:36:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:36:00,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553896986] [2020-10-14 08:36:00,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:36:00,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:36:00,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286343850] [2020-10-14 08:36:00,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:36:00,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:36:00,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:36:00,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:36:00,309 INFO L87 Difference]: Start difference. First operand 3925 states and 6342 transitions. Second operand 4 states. [2020-10-14 08:36:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:36:16,314 INFO L93 Difference]: Finished difference Result 11493 states and 18535 transitions. [2020-10-14 08:36:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:36:16,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2020-10-14 08:36:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:36:16,355 INFO L225 Difference]: With dead ends: 11493 [2020-10-14 08:36:16,355 INFO L226 Difference]: Without dead ends: 7731 [2020-10-14 08:36:16,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:36:16,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2020-10-14 08:36:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 7729. [2020-10-14 08:36:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2020-10-14 08:36:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12441 transitions. [2020-10-14 08:36:16,762 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12441 transitions. Word has length 478 [2020-10-14 08:36:16,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:36:16,763 INFO L479 AbstractCegarLoop]: Abstraction has 7729 states and 12441 transitions. [2020-10-14 08:36:16,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:36:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12441 transitions. [2020-10-14 08:36:16,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-14 08:36:16,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:36:16,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:36:16,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:36:16,793 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:36:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:36:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash -401059440, now seen corresponding path program 1 times [2020-10-14 08:36:16,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:36:16,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431001522] [2020-10-14 08:36:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:36:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:36:16,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:17,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:18,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:18,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:19,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:20,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:20,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:21,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:21,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:21,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:21,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:36:21,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-14 08:36:21,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:36:21,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 08:36:21,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:36:21,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:36:21,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:36:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 08:36:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-14 08:36:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:36:22,711 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:36:22,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:36:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:36:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:22,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:36:22,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:36:22,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:36:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 08:36:22,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:36:22,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:36:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:36:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:36:22,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:36:22,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:36:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:36:23,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431001522] [2020-10-14 08:36:23,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:36:23,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:36:23,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888520499] [2020-10-14 08:36:23,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:36:23,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:36:23,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:36:23,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:36:23,073 INFO L87 Difference]: Start difference. First operand 7729 states and 12441 transitions. Second operand 4 states. [2020-10-14 08:36:39,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:36:39,207 INFO L93 Difference]: Finished difference Result 22721 states and 36510 transitions. [2020-10-14 08:36:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:36:39,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 479 [2020-10-14 08:36:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:36:39,275 INFO L225 Difference]: With dead ends: 22721 [2020-10-14 08:36:39,275 INFO L226 Difference]: Without dead ends: 15211 [2020-10-14 08:36:39,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:36:39,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15211 states. [2020-10-14 08:36:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15211 to 15209. [2020-10-14 08:36:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15209 states. [2020-10-14 08:36:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15209 states to 15209 states and 24375 transitions. [2020-10-14 08:36:39,962 INFO L78 Accepts]: Start accepts. Automaton has 15209 states and 24375 transitions. Word has length 479 [2020-10-14 08:36:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:36:39,963 INFO L479 AbstractCegarLoop]: Abstraction has 15209 states and 24375 transitions. [2020-10-14 08:36:39,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:36:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 15209 states and 24375 transitions. [2020-10-14 08:36:40,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-14 08:36:40,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:36:40,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:36:40,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:36:40,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:36:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:36:40,007 INFO L82 PathProgramCache]: Analyzing trace with hash 400382101, now seen corresponding path program 1 times [2020-10-14 08:36:40,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:36:40,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191142545] [2020-10-14 08:36:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:36:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:36:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:40,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:40,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:41,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:42,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:43,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:43,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:43,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:44,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:45,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:36:45,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-14 08:36:45,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 08:36:45,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 08:36:45,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:36:45,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:36:45,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:36:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:36:45,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 08:36:45,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:36:45,850 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:36:45,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:36:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:36:45,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:45,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:36:45,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:36:45,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:36:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:36:45,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:36:45,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:36:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:36:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:36:45,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:36:45,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:36:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:36:46,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191142545] [2020-10-14 08:36:46,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:36:46,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:36:46,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844344970] [2020-10-14 08:36:46,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:36:46,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:36:46,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:36:46,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:36:46,003 INFO L87 Difference]: Start difference. First operand 15209 states and 24375 transitions. Second operand 4 states. [2020-10-14 08:36:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:36:55,375 INFO L93 Difference]: Finished difference Result 45395 states and 72707 transitions. [2020-10-14 08:36:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:36:55,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 479 [2020-10-14 08:36:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:36:55,448 INFO L225 Difference]: With dead ends: 45395 [2020-10-14 08:36:55,448 INFO L226 Difference]: Without dead ends: 30210 [2020-10-14 08:36:55,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:36:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30210 states. [2020-10-14 08:36:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30210 to 15237. [2020-10-14 08:36:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15237 states. [2020-10-14 08:36:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15237 states to 15237 states and 24417 transitions. [2020-10-14 08:36:56,436 INFO L78 Accepts]: Start accepts. Automaton has 15237 states and 24417 transitions. Word has length 479 [2020-10-14 08:36:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:36:56,437 INFO L479 AbstractCegarLoop]: Abstraction has 15237 states and 24417 transitions. [2020-10-14 08:36:56,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:36:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 15237 states and 24417 transitions. [2020-10-14 08:36:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2020-10-14 08:36:56,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:36:56,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:36:56,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:36:56,469 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:36:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:36:56,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2080073390, now seen corresponding path program 1 times [2020-10-14 08:36:56,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:36:56,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809521009] [2020-10-14 08:36:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:36:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:36:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:56,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:57,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:57,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:57,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:36:58,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:00,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:01,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:01,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-14 08:37:01,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:37:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 08:37:01,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:01,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:37:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:37:01,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 08:37:01,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:02,303 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:37:02,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:02,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:02,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:02,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:02,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:02,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:37:02,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:02,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:02,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:37:02,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:02,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:37:02,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:02,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:02,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809521009] [2020-10-14 08:37:02,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:02,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:37:02,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838608339] [2020-10-14 08:37:02,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:37:02,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:02,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:37:02,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:37:02,445 INFO L87 Difference]: Start difference. First operand 15237 states and 24417 transitions. Second operand 4 states. [2020-10-14 08:37:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:12,150 INFO L93 Difference]: Finished difference Result 45593 states and 73049 transitions. [2020-10-14 08:37:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:37:12,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 480 [2020-10-14 08:37:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:12,226 INFO L225 Difference]: With dead ends: 45593 [2020-10-14 08:37:12,226 INFO L226 Difference]: Without dead ends: 30378 [2020-10-14 08:37:12,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:37:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30378 states. [2020-10-14 08:37:13,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30378 to 15283. [2020-10-14 08:37:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15283 states. [2020-10-14 08:37:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15283 states to 15283 states and 24486 transitions. [2020-10-14 08:37:13,104 INFO L78 Accepts]: Start accepts. Automaton has 15283 states and 24486 transitions. Word has length 480 [2020-10-14 08:37:13,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:13,105 INFO L479 AbstractCegarLoop]: Abstraction has 15283 states and 24486 transitions. [2020-10-14 08:37:13,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:37:13,105 INFO L276 IsEmpty]: Start isEmpty. Operand 15283 states and 24486 transitions. [2020-10-14 08:37:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-14 08:37:13,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:13,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:13,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:37:13,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:13,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:13,138 INFO L82 PathProgramCache]: Analyzing trace with hash -968539711, now seen corresponding path program 1 times [2020-10-14 08:37:13,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:13,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326087370] [2020-10-14 08:37:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:13,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:13,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:14,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:15,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:15,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:15,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:16,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:16,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:18,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:18,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-14 08:37:18,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:37:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 08:37:18,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:18,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:37:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 08:37:18,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:37:18,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:18,996 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:37:18,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:19,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:19,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:19,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:19,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:19,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 08:37:19,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:19,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:37:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:37:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:19,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326087370] [2020-10-14 08:37:19,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:19,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:37:19,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252328646] [2020-10-14 08:37:19,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:37:19,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:19,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:37:19,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:37:19,155 INFO L87 Difference]: Start difference. First operand 15283 states and 24486 transitions. Second operand 4 states. [2020-10-14 08:37:37,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:37:37,403 INFO L93 Difference]: Finished difference Result 45625 states and 73078 transitions. [2020-10-14 08:37:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:37:37,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 481 [2020-10-14 08:37:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:37:37,461 INFO L225 Difference]: With dead ends: 45625 [2020-10-14 08:37:37,461 INFO L226 Difference]: Without dead ends: 30412 [2020-10-14 08:37:37,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:37:37,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30412 states. [2020-10-14 08:37:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30412 to 15354. [2020-10-14 08:37:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15354 states. [2020-10-14 08:37:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15354 states to 15354 states and 24578 transitions. [2020-10-14 08:37:38,184 INFO L78 Accepts]: Start accepts. Automaton has 15354 states and 24578 transitions. Word has length 481 [2020-10-14 08:37:38,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:37:38,185 INFO L479 AbstractCegarLoop]: Abstraction has 15354 states and 24578 transitions. [2020-10-14 08:37:38,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:37:38,185 INFO L276 IsEmpty]: Start isEmpty. Operand 15354 states and 24578 transitions. [2020-10-14 08:37:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-14 08:37:38,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:37:38,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:37:38,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:37:38,213 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:37:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:37:38,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1387986564, now seen corresponding path program 1 times [2020-10-14 08:37:38,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:37:38,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39835753] [2020-10-14 08:37:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:37:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:39,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:39,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:39,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:39,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:43,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:43,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-14 08:37:43,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:37:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-14 08:37:43,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:43,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:37:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:37:43,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-14 08:37:43,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:44,209 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:37:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:37:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:37:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:37:44,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:37:44,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:37:44,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:37:44,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:37:44,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:37:44,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:37:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:37:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:37:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:37:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:37:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:37:44,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39835753] [2020-10-14 08:37:44,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:37:44,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:37:44,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006723347] [2020-10-14 08:37:44,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:37:44,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:37:44,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:37:44,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:37:44,474 INFO L87 Difference]: Start difference. First operand 15354 states and 24578 transitions. Second operand 4 states. [2020-10-14 08:38:03,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:03,041 INFO L93 Difference]: Finished difference Result 44721 states and 71469 transitions. [2020-10-14 08:38:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:38:03,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 482 [2020-10-14 08:38:03,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:03,086 INFO L225 Difference]: With dead ends: 44721 [2020-10-14 08:38:03,086 INFO L226 Difference]: Without dead ends: 30063 [2020-10-14 08:38:03,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:38:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30063 states. [2020-10-14 08:38:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30063 to 30061. [2020-10-14 08:38:04,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30061 states. [2020-10-14 08:38:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30061 states to 30061 states and 47925 transitions. [2020-10-14 08:38:04,232 INFO L78 Accepts]: Start accepts. Automaton has 30061 states and 47925 transitions. Word has length 482 [2020-10-14 08:38:04,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:04,232 INFO L479 AbstractCegarLoop]: Abstraction has 30061 states and 47925 transitions. [2020-10-14 08:38:04,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:38:04,233 INFO L276 IsEmpty]: Start isEmpty. Operand 30061 states and 47925 transitions. [2020-10-14 08:38:04,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-14 08:38:04,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:04,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:04,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:38:04,265 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:04,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:04,265 INFO L82 PathProgramCache]: Analyzing trace with hash 88526049, now seen corresponding path program 1 times [2020-10-14 08:38:04,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:04,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136474111] [2020-10-14 08:38:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:05,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:05,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:06,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:06,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:06,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:06,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:07,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:07,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:09,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:09,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-14 08:38:09,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-14 08:38:09,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-14 08:38:09,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:09,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:38:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:38:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-14 08:38:09,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:10,496 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:38:10,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:10,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:10,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:10,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:10,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:10,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 08:38:10,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:10,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:10,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:10,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136474111] [2020-10-14 08:38:10,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:10,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:38:10,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7268226] [2020-10-14 08:38:10,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:38:10,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:10,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:38:10,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:38:10,803 INFO L87 Difference]: Start difference. First operand 30061 states and 47925 transitions. Second operand 5 states. [2020-10-14 08:38:28,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:38:28,251 INFO L93 Difference]: Finished difference Result 89000 states and 141879 transitions. [2020-10-14 08:38:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:38:28,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 482 [2020-10-14 08:38:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:38:28,313 INFO L225 Difference]: With dead ends: 89000 [2020-10-14 08:38:28,313 INFO L226 Difference]: Without dead ends: 59270 [2020-10-14 08:38:28,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:38:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59270 states. [2020-10-14 08:38:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59270 to 59268. [2020-10-14 08:38:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59268 states. [2020-10-14 08:38:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59268 states to 59268 states and 94112 transitions. [2020-10-14 08:38:32,733 INFO L78 Accepts]: Start accepts. Automaton has 59268 states and 94112 transitions. Word has length 482 [2020-10-14 08:38:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:38:32,733 INFO L479 AbstractCegarLoop]: Abstraction has 59268 states and 94112 transitions. [2020-10-14 08:38:32,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:38:32,734 INFO L276 IsEmpty]: Start isEmpty. Operand 59268 states and 94112 transitions. [2020-10-14 08:38:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-14 08:38:32,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:38:32,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:38:32,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:38:32,797 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:38:32,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:38:32,798 INFO L82 PathProgramCache]: Analyzing trace with hash -314121517, now seen corresponding path program 1 times [2020-10-14 08:38:32,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:38:32,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993231155] [2020-10-14 08:38:32,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:38:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:33,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:33,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:33,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:34,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:34,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:35,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:37,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:37,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-14 08:38:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:38:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 08:38:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:37,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:38:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:38:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 08:38:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:38,874 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-14 08:38:38,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:38:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:38:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:38:38,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:38:38,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:38:38,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:38:38,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:38:38,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:38:38,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:38:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:38:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:38:38,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:38:38,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:38:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:38:39,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993231155] [2020-10-14 08:38:39,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:38:39,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:38:39,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25586759] [2020-10-14 08:38:39,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:38:39,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:38:39,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:38:39,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:38:39,125 INFO L87 Difference]: Start difference. First operand 59268 states and 94112 transitions. Second operand 4 states.