/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:34:51,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:34:51,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:34:51,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:34:51,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:34:51,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:34:51,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:34:51,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:34:51,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:34:51,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:34:51,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:34:51,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:34:51,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:34:51,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:34:51,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:34:51,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:34:51,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:34:51,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:34:51,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:34:51,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:34:51,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:34:51,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:34:51,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:34:51,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:34:51,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:34:51,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:34:51,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:34:51,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:34:51,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:34:51,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:34:51,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:34:51,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:34:51,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:34:51,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:34:51,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:34:51,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:34:51,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:34:51,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:34:51,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:34:51,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:34:51,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:34:51,722 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 [2020-10-15 03:34:51,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:34:51,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:34:51,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:34:51,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:34:51,747 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:34:51,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:34:51,748 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:34:51,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:34:51,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:34:51,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:34:51,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:34:51,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:34:51,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:34:51,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:34:51,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:34:51,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:34:51,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:34:51,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:34:51,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:34:51,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:34:51,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:34:51,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:34:51,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:34:51,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:34:51,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:34:51,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:34:51,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:34:51,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:34:51,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:34:51,752 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:34:52,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:34:52,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:34:52,102 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:34:52,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:34:52,103 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:34:52,104 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-15 03:34:52,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8869b465f/cedc6861137246d8a45eb8f505431e1c/FLAG610544344 [2020-10-15 03:34:52,727 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:34:52,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-15 03:34:52,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8869b465f/cedc6861137246d8a45eb8f505431e1c/FLAG610544344 [2020-10-15 03:34:53,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8869b465f/cedc6861137246d8a45eb8f505431e1c [2020-10-15 03:34:53,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:34:53,048 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:34:53,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:34:53,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:34:53,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:34:53,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:34:53" (1/1) ... [2020-10-15 03:34:53,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f72e2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53, skipping insertion in model container [2020-10-15 03:34:53,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:34:53" (1/1) ... [2020-10-15 03:34:53,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:34:53,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:34:53,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:34:53,781 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:34:53,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:34:53,923 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:34:53,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53 WrapperNode [2020-10-15 03:34:53,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:34:53,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:34:53,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:34:53,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:34:53,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53" (1/1) ... [2020-10-15 03:34:53,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53" (1/1) ... [2020-10-15 03:34:53,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53" (1/1) ... [2020-10-15 03:34:53,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53" (1/1) ... [2020-10-15 03:34:53,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53" (1/1) ... [2020-10-15 03:34:53,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53" (1/1) ... [2020-10-15 03:34:54,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53" (1/1) ... [2020-10-15 03:34:54,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:34:54,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:34:54,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:34:54,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:34:54,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53" (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 [2020-10-15 03:34:54,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:34:54,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:34:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:34:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:34:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:34:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:34:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:34:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:34:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:34:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:34:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:34:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:34:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:34:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:34:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:34:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:34:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:34:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:34:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:34:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:34:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:34:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:34:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:34:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:34:55,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:34:55,245 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:34:55,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:55 BoogieIcfgContainer [2020-10-15 03:34:55,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:34:55,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:34:55,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:34:55,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:34:55,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:34:53" (1/3) ... [2020-10-15 03:34:55,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625e5510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:34:55, skipping insertion in model container [2020-10-15 03:34:55,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:53" (2/3) ... [2020-10-15 03:34:55,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625e5510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:34:55, skipping insertion in model container [2020-10-15 03:34:55,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:55" (3/3) ... [2020-10-15 03:34:55,263 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-10-15 03:34:55,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:34:55,284 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:34:55,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:34:55,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:34:55,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:34:55,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:34:55,326 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:34:55,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:34:55,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:34:55,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:34:55,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:34:55,351 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-10-15 03:34:55,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-15 03:34:55,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:34:55,365 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] [2020-10-15 03:34:55,366 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:34:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:34:55,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1581776616, now seen corresponding path program 1 times [2020-10-15 03:34:55,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:34:55,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169578063] [2020-10-15 03:34:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:34:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:55,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:57,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:57,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:59,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:00,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-15 03:35:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:35:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 03:35:00,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:00,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:00,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 03:35:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:35:01,250 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:01,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:01,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:01,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:01,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:01,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:35:01,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:01,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:01,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:01,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:01,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169578063] [2020-10-15 03:35:01,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:01,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:01,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574722499] [2020-10-15 03:35:01,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:01,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:01,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:01,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:01,363 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 10 states. [2020-10-15 03:35:01,787 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-15 03:35:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:04,731 INFO L93 Difference]: Finished difference Result 1478 states and 2361 transitions. [2020-10-15 03:35:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:04,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2020-10-15 03:35:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:04,760 INFO L225 Difference]: With dead ends: 1478 [2020-10-15 03:35:04,760 INFO L226 Difference]: Without dead ends: 1337 [2020-10-15 03:35:04,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-10-15 03:35:04,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 308. [2020-10-15 03:35:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-15 03:35:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 441 transitions. [2020-10-15 03:35:04,869 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 441 transitions. Word has length 112 [2020-10-15 03:35:04,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:04,870 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 441 transitions. [2020-10-15 03:35:04,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 441 transitions. [2020-10-15 03:35:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:35:04,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:04,874 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] [2020-10-15 03:35:04,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:35:04,875 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:04,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1235271490, now seen corresponding path program 1 times [2020-10-15 03:35:04,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:04,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705959111] [2020-10-15 03:35:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:04,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:05,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:06,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:07,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:07,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:07,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:08,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:09,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:09,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:09,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:35:09,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:35:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-15 03:35:09,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:09,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:35:09,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-15 03:35:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:10,291 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:10,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:10,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:10,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:10,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:10,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:35:10,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:10,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:10,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:10,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:10,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705959111] [2020-10-15 03:35:10,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:10,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:10,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810859224] [2020-10-15 03:35:10,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:10,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:10,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:10,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:10,383 INFO L87 Difference]: Start difference. First operand 308 states and 441 transitions. Second operand 10 states. [2020-10-15 03:35:10,700 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:35:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:12,524 INFO L93 Difference]: Finished difference Result 1945 states and 3017 transitions. [2020-10-15 03:35:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:12,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-15 03:35:12,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:12,535 INFO L225 Difference]: With dead ends: 1945 [2020-10-15 03:35:12,535 INFO L226 Difference]: Without dead ends: 1785 [2020-10-15 03:35:12,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2020-10-15 03:35:12,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 562. [2020-10-15 03:35:12,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-10-15 03:35:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 843 transitions. [2020-10-15 03:35:12,602 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 843 transitions. Word has length 114 [2020-10-15 03:35:12,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:12,602 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 843 transitions. [2020-10-15 03:35:12,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:12,603 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 843 transitions. [2020-10-15 03:35:12,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:35:12,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:12,606 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] [2020-10-15 03:35:12,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:35:12,606 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:12,607 INFO L82 PathProgramCache]: Analyzing trace with hash -772514959, now seen corresponding path program 1 times [2020-10-15 03:35:12,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:12,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527454987] [2020-10-15 03:35:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:12,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:12,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:16,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:17,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:17,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:35:17,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:35:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 03:35:17,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:17,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:17,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:35:17,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:18,058 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:18,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:18,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:18,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:18,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:18,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:35:18,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:18,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:18,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527454987] [2020-10-15 03:35:18,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:18,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:18,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29317934] [2020-10-15 03:35:18,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:18,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:18,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:18,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:18,154 INFO L87 Difference]: Start difference. First operand 562 states and 843 transitions. Second operand 10 states. [2020-10-15 03:35:18,448 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:35:20,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:20,064 INFO L93 Difference]: Finished difference Result 2376 states and 3690 transitions. [2020-10-15 03:35:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:20,065 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-15 03:35:20,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:20,081 INFO L225 Difference]: With dead ends: 2376 [2020-10-15 03:35:20,082 INFO L226 Difference]: Without dead ends: 2141 [2020-10-15 03:35:20,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-10-15 03:35:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 810. [2020-10-15 03:35:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2020-10-15 03:35:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1236 transitions. [2020-10-15 03:35:20,175 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1236 transitions. Word has length 114 [2020-10-15 03:35:20,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:20,177 INFO L479 AbstractCegarLoop]: Abstraction has 810 states and 1236 transitions. [2020-10-15 03:35:20,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:20,177 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1236 transitions. [2020-10-15 03:35:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:35:20,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:20,184 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] [2020-10-15 03:35:20,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:35:20,185 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:20,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:20,186 INFO L82 PathProgramCache]: Analyzing trace with hash 571290459, now seen corresponding path program 1 times [2020-10-15 03:35:20,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:20,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585734955] [2020-10-15 03:35:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:20,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:20,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:20,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:20,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:22,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:22,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:22,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:25,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:25,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:35:25,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:35:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:35:25,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:25,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:35:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:25,632 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:25,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:25,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:25,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:25,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:35:25,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:25,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:25,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:25,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:25,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585734955] [2020-10-15 03:35:25,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:25,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:25,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811713119] [2020-10-15 03:35:25,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:25,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:25,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:25,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:25,746 INFO L87 Difference]: Start difference. First operand 810 states and 1236 transitions. Second operand 10 states. [2020-10-15 03:35:26,132 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:35:27,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:27,474 INFO L93 Difference]: Finished difference Result 2554 states and 3970 transitions. [2020-10-15 03:35:27,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:27,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-15 03:35:27,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:27,487 INFO L225 Difference]: With dead ends: 2554 [2020-10-15 03:35:27,487 INFO L226 Difference]: Without dead ends: 2319 [2020-10-15 03:35:27,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2020-10-15 03:35:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 969. [2020-10-15 03:35:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-10-15 03:35:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1488 transitions. [2020-10-15 03:35:27,588 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1488 transitions. Word has length 114 [2020-10-15 03:35:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:27,588 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1488 transitions. [2020-10-15 03:35:27,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:27,589 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1488 transitions. [2020-10-15 03:35:27,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:35:27,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:27,590 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] [2020-10-15 03:35:27,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:35:27,591 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:27,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:27,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1627098138, now seen corresponding path program 1 times [2020-10-15 03:35:27,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:27,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102133664] [2020-10-15 03:35:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:28,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:28,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:28,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:28,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:32,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:35:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:35:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:35:32,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:32,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-15 03:35:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:33,013 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:33,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:33,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:33,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:33,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:35:33,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:33,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:33,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:33,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:33,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102133664] [2020-10-15 03:35:33,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:33,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:33,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485173738] [2020-10-15 03:35:33,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:33,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:33,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:33,089 INFO L87 Difference]: Start difference. First operand 969 states and 1488 transitions. Second operand 10 states. [2020-10-15 03:35:33,453 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-15 03:35:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:35,109 INFO L93 Difference]: Finished difference Result 3230 states and 5046 transitions. [2020-10-15 03:35:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:35,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2020-10-15 03:35:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:35,125 INFO L225 Difference]: With dead ends: 3230 [2020-10-15 03:35:35,125 INFO L226 Difference]: Without dead ends: 2442 [2020-10-15 03:35:35,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-10-15 03:35:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 969. [2020-10-15 03:35:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-10-15 03:35:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1483 transitions. [2020-10-15 03:35:35,276 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1483 transitions. Word has length 114 [2020-10-15 03:35:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:35,277 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1483 transitions. [2020-10-15 03:35:35,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:35,277 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1483 transitions. [2020-10-15 03:35:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:35:35,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:35,282 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] [2020-10-15 03:35:35,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:35:35,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:35,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1385880411, now seen corresponding path program 1 times [2020-10-15 03:35:35,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:35,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50503635] [2020-10-15 03:35:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:36,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:36,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:36,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:36,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:36,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:40,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:40,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:35:40,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:35:40,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 03:35:40,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:40,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:40,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 03:35:40,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:40,589 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:40,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:40,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:35:40,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:40,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:40,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:40,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50503635] [2020-10-15 03:35:40,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:40,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:40,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964715932] [2020-10-15 03:35:40,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:40,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:40,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:40,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:40,654 INFO L87 Difference]: Start difference. First operand 969 states and 1483 transitions. Second operand 6 states. [2020-10-15 03:35:40,917 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:35:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:41,795 INFO L93 Difference]: Finished difference Result 1869 states and 2894 transitions. [2020-10-15 03:35:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:41,795 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-15 03:35:41,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:41,799 INFO L225 Difference]: With dead ends: 1869 [2020-10-15 03:35:41,800 INFO L226 Difference]: Without dead ends: 969 [2020-10-15 03:35:41,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:35:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2020-10-15 03:35:41,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2020-10-15 03:35:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 969 states. [2020-10-15 03:35:41,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1472 transitions. [2020-10-15 03:35:41,890 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1472 transitions. Word has length 114 [2020-10-15 03:35:41,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:41,890 INFO L479 AbstractCegarLoop]: Abstraction has 969 states and 1472 transitions. [2020-10-15 03:35:41,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:41,890 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1472 transitions. [2020-10-15 03:35:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 03:35:41,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:41,892 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] [2020-10-15 03:35:41,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:35:41,893 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:41,893 INFO L82 PathProgramCache]: Analyzing trace with hash -781699375, now seen corresponding path program 1 times [2020-10-15 03:35:41,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:41,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222747509] [2020-10-15 03:35:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:42,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:44,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 03:35:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:35:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:35:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:46,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:35:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:47,217 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:47,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:47,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:47,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:47,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:47,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:47,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:35:47,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:47,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:47,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:47,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222747509] [2020-10-15 03:35:47,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:47,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:47,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801514] [2020-10-15 03:35:47,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:47,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:47,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:47,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:47,280 INFO L87 Difference]: Start difference. First operand 969 states and 1472 transitions. Second operand 6 states. [2020-10-15 03:35:47,529 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:35:48,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:48,499 INFO L93 Difference]: Finished difference Result 2664 states and 4114 transitions. [2020-10-15 03:35:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:48,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-15 03:35:48,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:48,505 INFO L225 Difference]: With dead ends: 2664 [2020-10-15 03:35:48,505 INFO L226 Difference]: Without dead ends: 1772 [2020-10-15 03:35:48,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:35:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2020-10-15 03:35:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1770. [2020-10-15 03:35:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-10-15 03:35:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2711 transitions. [2020-10-15 03:35:48,686 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2711 transitions. Word has length 115 [2020-10-15 03:35:48,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:48,686 INFO L479 AbstractCegarLoop]: Abstraction has 1770 states and 2711 transitions. [2020-10-15 03:35:48,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2711 transitions. [2020-10-15 03:35:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 03:35:48,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:48,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:35:48,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:35:48,689 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:48,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:48,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1988454405, now seen corresponding path program 1 times [2020-10-15 03:35:48,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:48,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986153494] [2020-10-15 03:35:48,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:49,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:51,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:53,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 03:35:53,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:35:53,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:35:53,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:53,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:35:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:35:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-15 03:35:53,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:53,981 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:35:53,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:54,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:54,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:54,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:35:54,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:54,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:35:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:54,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:35:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:54,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986153494] [2020-10-15 03:35:54,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:54,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:35:54,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560364344] [2020-10-15 03:35:54,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:35:54,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:54,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:35:54,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:35:54,028 INFO L87 Difference]: Start difference. First operand 1770 states and 2711 transitions. Second operand 6 states. [2020-10-15 03:35:54,280 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:35:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:55,354 INFO L93 Difference]: Finished difference Result 4999 states and 7729 transitions. [2020-10-15 03:35:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:35:55,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-15 03:35:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:55,365 INFO L225 Difference]: With dead ends: 4999 [2020-10-15 03:35:55,366 INFO L226 Difference]: Without dead ends: 3314 [2020-10-15 03:35:55,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:35:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2020-10-15 03:35:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 3312. [2020-10-15 03:35:55,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-10-15 03:35:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 5086 transitions. [2020-10-15 03:35:55,741 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 5086 transitions. Word has length 116 [2020-10-15 03:35:55,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:55,741 INFO L479 AbstractCegarLoop]: Abstraction has 3312 states and 5086 transitions. [2020-10-15 03:35:55,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:35:55,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 5086 transitions. [2020-10-15 03:35:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 03:35:55,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:55,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:35:55,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:35:55,744 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:55,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:55,744 INFO L82 PathProgramCache]: Analyzing trace with hash 988033521, now seen corresponding path program 1 times [2020-10-15 03:35:55,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:55,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035296255] [2020-10-15 03:35:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:55,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:55,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:55,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:56,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:58,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:58,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:58,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:00,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 03:36:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 03:36:00,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:36:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:00,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:00,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 03:36:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:01,018 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:01,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:01,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:36:01,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:01,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:01,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:01,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:01,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035296255] [2020-10-15 03:36:01,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:01,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:01,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364033775] [2020-10-15 03:36:01,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:01,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:01,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:01,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:01,069 INFO L87 Difference]: Start difference. First operand 3312 states and 5086 transitions. Second operand 6 states. [2020-10-15 03:36:01,321 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:36:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:02,346 INFO L93 Difference]: Finished difference Result 6543 states and 10087 transitions. [2020-10-15 03:36:02,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:02,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-15 03:36:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:02,358 INFO L225 Difference]: With dead ends: 6543 [2020-10-15 03:36:02,358 INFO L226 Difference]: Without dead ends: 3312 [2020-10-15 03:36:02,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:02,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2020-10-15 03:36:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 3312. [2020-10-15 03:36:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-10-15 03:36:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 5045 transitions. [2020-10-15 03:36:02,758 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 5045 transitions. Word has length 117 [2020-10-15 03:36:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:02,759 INFO L479 AbstractCegarLoop]: Abstraction has 3312 states and 5045 transitions. [2020-10-15 03:36:02,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 5045 transitions. [2020-10-15 03:36:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:36:02,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:02,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:02,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:36:02,762 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:02,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:02,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1364753612, now seen corresponding path program 1 times [2020-10-15 03:36:02,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:02,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208654716] [2020-10-15 03:36:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:03,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:04,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:07,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:36:07,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:36:07,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:36:07,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:07,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:36:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:36:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:36:07,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:08,260 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:08,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:08,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:08,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:08,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:08,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:36:08,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:08,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:08,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208654716] [2020-10-15 03:36:08,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:08,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:36:08,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918993741] [2020-10-15 03:36:08,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:36:08,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:08,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:36:08,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:08,329 INFO L87 Difference]: Start difference. First operand 3312 states and 5045 transitions. Second operand 8 states. [2020-10-15 03:36:08,598 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 03:36:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:10,646 INFO L93 Difference]: Finished difference Result 8060 states and 12335 transitions. [2020-10-15 03:36:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:36:10,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-15 03:36:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:10,665 INFO L225 Difference]: With dead ends: 8060 [2020-10-15 03:36:10,665 INFO L226 Difference]: Without dead ends: 4876 [2020-10-15 03:36:10,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:36:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2020-10-15 03:36:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 3312. [2020-10-15 03:36:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-10-15 03:36:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 5044 transitions. [2020-10-15 03:36:11,107 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 5044 transitions. Word has length 118 [2020-10-15 03:36:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:11,107 INFO L479 AbstractCegarLoop]: Abstraction has 3312 states and 5044 transitions. [2020-10-15 03:36:11,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:36:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 5044 transitions. [2020-10-15 03:36:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:36:11,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:11,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:11,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:36:11,110 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash 162822392, now seen corresponding path program 1 times [2020-10-15 03:36:11,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:11,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747209207] [2020-10-15 03:36:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:11,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:11,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:11,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:11,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:16,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:16,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:36:16,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:36:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:36:16,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:16,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:36:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:36:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-15 03:36:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:16,506 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:16,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:16,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:16,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:16,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:36:16,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:16,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:16,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747209207] [2020-10-15 03:36:16,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:16,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:36:16,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614569152] [2020-10-15 03:36:16,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:36:16,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:16,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:36:16,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:16,548 INFO L87 Difference]: Start difference. First operand 3312 states and 5044 transitions. Second operand 9 states. [2020-10-15 03:36:16,836 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 03:36:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:19,271 INFO L93 Difference]: Finished difference Result 9742 states and 14880 transitions. [2020-10-15 03:36:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:36:19,271 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 119 [2020-10-15 03:36:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:19,294 INFO L225 Difference]: With dead ends: 9742 [2020-10-15 03:36:19,294 INFO L226 Difference]: Without dead ends: 6583 [2020-10-15 03:36:19,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:36:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2020-10-15 03:36:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 3312. [2020-10-15 03:36:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2020-10-15 03:36:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 5041 transitions. [2020-10-15 03:36:19,745 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 5041 transitions. Word has length 119 [2020-10-15 03:36:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:19,745 INFO L479 AbstractCegarLoop]: Abstraction has 3312 states and 5041 transitions. [2020-10-15 03:36:19,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:36:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 5041 transitions. [2020-10-15 03:36:19,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:36:19,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:19,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:19,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:36:19,747 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:19,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:19,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1616555320, now seen corresponding path program 1 times [2020-10-15 03:36:19,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:19,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724563293] [2020-10-15 03:36:19,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:19,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:19,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:19,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:20,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:22,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:24,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:24,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:36:24,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:36:24,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:36:24,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:24,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:36:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 03:36:24,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:25,032 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:25,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:25,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:25,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:36:25,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:25,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:25,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:25,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:25,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724563293] [2020-10-15 03:36:25,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:25,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:36:25,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559648831] [2020-10-15 03:36:25,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:25,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:25,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:25,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:25,065 INFO L87 Difference]: Start difference. First operand 3312 states and 5041 transitions. Second operand 6 states. [2020-10-15 03:36:25,295 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-15 03:36:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:29,422 INFO L93 Difference]: Finished difference Result 22215 states and 34045 transitions. [2020-10-15 03:36:29,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:36:29,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-15 03:36:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:29,464 INFO L225 Difference]: With dead ends: 22215 [2020-10-15 03:36:29,464 INFO L226 Difference]: Without dead ends: 19050 [2020-10-15 03:36:29,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:36:29,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19050 states. [2020-10-15 03:36:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19050 to 12853. [2020-10-15 03:36:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12853 states. [2020-10-15 03:36:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12853 states to 12853 states and 19629 transitions. [2020-10-15 03:36:31,330 INFO L78 Accepts]: Start accepts. Automaton has 12853 states and 19629 transitions. Word has length 120 [2020-10-15 03:36:31,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:31,330 INFO L479 AbstractCegarLoop]: Abstraction has 12853 states and 19629 transitions. [2020-10-15 03:36:31,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:31,331 INFO L276 IsEmpty]: Start isEmpty. Operand 12853 states and 19629 transitions. [2020-10-15 03:36:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:36:31,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:31,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:31,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:36:31,336 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:31,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:31,336 INFO L82 PathProgramCache]: Analyzing trace with hash 224673538, now seen corresponding path program 1 times [2020-10-15 03:36:31,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:31,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684223741] [2020-10-15 03:36:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:31,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:31,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:32,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:32,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:36:36,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:36:36,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:36,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:36:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:36:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 03:36:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:36,638 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:36,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:36,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:36,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:36:36,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:36,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:36,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:36,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:36,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684223741] [2020-10-15 03:36:36,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:36,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:36,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881026963] [2020-10-15 03:36:36,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:36:36,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:36,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:36:36,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:36:36,690 INFO L87 Difference]: Start difference. First operand 12853 states and 19629 transitions. Second operand 5 states. [2020-10-15 03:36:36,933 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 03:36:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:40,997 INFO L93 Difference]: Finished difference Result 35601 states and 54343 transitions. [2020-10-15 03:36:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:36:40,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:36:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:41,046 INFO L225 Difference]: With dead ends: 35601 [2020-10-15 03:36:41,047 INFO L226 Difference]: Without dead ends: 23223 [2020-10-15 03:36:41,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23223 states. [2020-10-15 03:36:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23223 to 23221. [2020-10-15 03:36:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23221 states. [2020-10-15 03:36:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23221 states to 23221 states and 35173 transitions. [2020-10-15 03:36:44,341 INFO L78 Accepts]: Start accepts. Automaton has 23221 states and 35173 transitions. Word has length 120 [2020-10-15 03:36:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:44,342 INFO L479 AbstractCegarLoop]: Abstraction has 23221 states and 35173 transitions. [2020-10-15 03:36:44,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:36:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 23221 states and 35173 transitions. [2020-10-15 03:36:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:36:44,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:44,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:36:44,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:36:44,345 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1087347656, now seen corresponding path program 1 times [2020-10-15 03:36:44,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:44,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517240099] [2020-10-15 03:36:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:44,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:47,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:49,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:49,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:36:49,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:49,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:36:49,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:49,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:36:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:36:49,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 03:36:49,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:49,644 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:49,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:49,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:49,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:49,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:49,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:36:49,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:49,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:49,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:49,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517240099] [2020-10-15 03:36:49,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:49,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:36:49,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103965460] [2020-10-15 03:36:49,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:36:49,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:49,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:36:49,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:36:49,690 INFO L87 Difference]: Start difference. First operand 23221 states and 35173 transitions. Second operand 10 states. [2020-10-15 03:36:49,983 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:59,816 INFO L93 Difference]: Finished difference Result 71692 states and 108683 transitions. [2020-10-15 03:36:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:36:59,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2020-10-15 03:36:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:59,905 INFO L225 Difference]: With dead ends: 71692 [2020-10-15 03:36:59,905 INFO L226 Difference]: Without dead ends: 64594 [2020-10-15 03:36:59,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:36:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64594 states. [2020-10-15 03:37:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64594 to 28021. [2020-10-15 03:37:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28021 states. [2020-10-15 03:37:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28021 states to 28021 states and 42453 transitions. [2020-10-15 03:37:04,326 INFO L78 Accepts]: Start accepts. Automaton has 28021 states and 42453 transitions. Word has length 120 [2020-10-15 03:37:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:04,326 INFO L479 AbstractCegarLoop]: Abstraction has 28021 states and 42453 transitions. [2020-10-15 03:37:04,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:37:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 28021 states and 42453 transitions. [2020-10-15 03:37:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:37:04,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:04,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:04,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:37:04,330 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:04,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1673935505, now seen corresponding path program 1 times [2020-10-15 03:37:04,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:04,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040636137] [2020-10-15 03:37:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:04,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:05,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:09,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:09,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:37:09,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:37:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 03:37:09,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:09,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 03:37:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 03:37:09,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:09,598 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:37:09,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:09,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:09,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:09,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:09,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:37:09,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:09,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:09,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040636137] [2020-10-15 03:37:09,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:09,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:37:09,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923974071] [2020-10-15 03:37:09,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:09,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:09,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:09,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:09,633 INFO L87 Difference]: Start difference. First operand 28021 states and 42453 transitions. Second operand 6 states. [2020-10-15 03:37:09,878 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 03:37:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:17,026 INFO L93 Difference]: Finished difference Result 45889 states and 69524 transitions. [2020-10-15 03:37:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:17,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-15 03:37:17,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:17,060 INFO L225 Difference]: With dead ends: 45889 [2020-10-15 03:37:17,061 INFO L226 Difference]: Without dead ends: 38791 [2020-10-15 03:37:17,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:37:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38791 states. [2020-10-15 03:37:21,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38791 to 35413. [2020-10-15 03:37:21,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35413 states. [2020-10-15 03:37:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35413 states to 35413 states and 53841 transitions. [2020-10-15 03:37:21,977 INFO L78 Accepts]: Start accepts. Automaton has 35413 states and 53841 transitions. Word has length 120 [2020-10-15 03:37:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:21,978 INFO L479 AbstractCegarLoop]: Abstraction has 35413 states and 53841 transitions. [2020-10-15 03:37:21,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 35413 states and 53841 transitions. [2020-10-15 03:37:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:37:21,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:21,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:21,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:37:21,981 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash -481545469, now seen corresponding path program 1 times [2020-10-15 03:37:21,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:21,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178474180] [2020-10-15 03:37:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:22,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:22,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:22,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:25,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:25,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:25,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:26,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:27,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:27,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:37:27,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:37:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:37:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:27,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 03:37:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 03:37:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:27,241 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:37:27,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:27,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:37:27,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:27,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:27,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178474180] [2020-10-15 03:37:27,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:27,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:37:27,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510577867] [2020-10-15 03:37:27,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:27,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:27,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:27,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:27,276 INFO L87 Difference]: Start difference. First operand 35413 states and 53841 transitions. Second operand 6 states. [2020-10-15 03:37:27,527 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-15 03:37:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:34,696 INFO L93 Difference]: Finished difference Result 53381 states and 80940 transitions. [2020-10-15 03:37:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:34,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-15 03:37:34,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:34,744 INFO L225 Difference]: With dead ends: 53381 [2020-10-15 03:37:34,745 INFO L226 Difference]: Without dead ends: 43891 [2020-10-15 03:37:34,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:37:34,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43891 states. [2020-10-15 03:37:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43891 to 39137. [2020-10-15 03:37:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39137 states. [2020-10-15 03:37:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39137 states to 39137 states and 59553 transitions. [2020-10-15 03:37:41,260 INFO L78 Accepts]: Start accepts. Automaton has 39137 states and 59553 transitions. Word has length 120 [2020-10-15 03:37:41,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:41,260 INFO L479 AbstractCegarLoop]: Abstraction has 39137 states and 59553 transitions. [2020-10-15 03:37:41,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 39137 states and 59553 transitions. [2020-10-15 03:37:41,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:37:41,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:41,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:37:41,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:37:41,265 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:41,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:41,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1846760912, now seen corresponding path program 1 times [2020-10-15 03:37:41,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:41,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157592758] [2020-10-15 03:37:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:41,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:41,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:42,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:42,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:44,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:46,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:46,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:37:46,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:37:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:37:46,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:46,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:46,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:37:46,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:37:46,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 03:37:46,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:46,679 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:37:46,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:46,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:46,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:46,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:46,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:37:46,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:46,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:46,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:46,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:46,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157592758] [2020-10-15 03:37:46,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:46,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:37:46,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437942097] [2020-10-15 03:37:46,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:37:46,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:46,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:37:46,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:37:46,718 INFO L87 Difference]: Start difference. First operand 39137 states and 59553 transitions. Second operand 9 states. [2020-10-15 03:37:46,969 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:38:36,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:36,291 INFO L93 Difference]: Finished difference Result 340727 states and 518005 transitions. [2020-10-15 03:38:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 03:38:36,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 120 [2020-10-15 03:38:36,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:36,681 INFO L225 Difference]: With dead ends: 340727 [2020-10-15 03:38:36,681 INFO L226 Difference]: Without dead ends: 301971 [2020-10-15 03:38:36,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-10-15 03:38:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301971 states. [2020-10-15 03:38:44,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301971 to 38857. [2020-10-15 03:38:44,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38857 states. [2020-10-15 03:38:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38857 states to 38857 states and 58877 transitions. [2020-10-15 03:38:44,586 INFO L78 Accepts]: Start accepts. Automaton has 38857 states and 58877 transitions. Word has length 120 [2020-10-15 03:38:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:38:44,586 INFO L479 AbstractCegarLoop]: Abstraction has 38857 states and 58877 transitions. [2020-10-15 03:38:44,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:38:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 38857 states and 58877 transitions. [2020-10-15 03:38:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:38:44,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:38:44,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:38:44,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:38:44,590 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:38:44,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:38:44,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1555818154, now seen corresponding path program 1 times [2020-10-15 03:38:44,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:38:44,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122425113] [2020-10-15 03:38:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:38:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:44,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:46,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:46,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:46,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking...