/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:10:22,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:10:22,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:10:22,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:10:22,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:10:22,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:10:22,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:10:22,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:10:22,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:10:22,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:10:22,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:10:22,809 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:10:22,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:10:22,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:10:22,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:10:22,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:10:22,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:10:22,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:10:22,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:10:22,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:10:22,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:10:22,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:10:22,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:10:22,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:10:22,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:10:22,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:10:22,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:10:22,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:10:22,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:10:22,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:10:22,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:10:22,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:10:22,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:10:22,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:10:22,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:10:22,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:10:22,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:10:22,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:10:22,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:10:22,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:10:22,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:10:22,885 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 [2020-10-28 18:10:22,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:10:22,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:10:22,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:10:22,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:10:22,957 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:10:22,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:10:22,958 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:10:22,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:10:22,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:10:22,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:10:22,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:10:22,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:10:22,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:10:22,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:10:22,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:10:22,961 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:10:22,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:10:22,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:10:22,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:10:22,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:10:22,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:10:22,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:10:22,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:10:22,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:10:22,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:10:22,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:10:22,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:10:22,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:10:22,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:10:22,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:10:23,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:10:23,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:10:23,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:10:23,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:10:23,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:10:23,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 18:10:23,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2b6a9035/8b37a8987b8447908106220ee3f66cc8/FLAGc3deec5ea [2020-10-28 18:10:24,312 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:10:24,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 18:10:24,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2b6a9035/8b37a8987b8447908106220ee3f66cc8/FLAGc3deec5ea [2020-10-28 18:10:24,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2b6a9035/8b37a8987b8447908106220ee3f66cc8 [2020-10-28 18:10:24,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:10:24,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:10:24,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:10:24,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:10:24,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:10:24,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:10:24" (1/1) ... [2020-10-28 18:10:24,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7c2189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:24, skipping insertion in model container [2020-10-28 18:10:24,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:10:24" (1/1) ... [2020-10-28 18:10:24,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:10:24,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:10:25,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:10:25,359 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:10:25,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:10:25,603 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:10:25,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25 WrapperNode [2020-10-28 18:10:25,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:10:25,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:10:25,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:10:25,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:10:25,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25" (1/1) ... [2020-10-28 18:10:25,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25" (1/1) ... [2020-10-28 18:10:25,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25" (1/1) ... [2020-10-28 18:10:25,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25" (1/1) ... [2020-10-28 18:10:25,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25" (1/1) ... [2020-10-28 18:10:25,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25" (1/1) ... [2020-10-28 18:10:25,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25" (1/1) ... [2020-10-28 18:10:25,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:10:25,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:10:25,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:10:25,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:10:25,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25" (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 [2020-10-28 18:10:25,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:10:25,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:10:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:10:25,854 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:10:25,855 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:10:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:10:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:10:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:10:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:10:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:10:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:10:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:10:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:10:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:10:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:10:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:10:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:10:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:10:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:10:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:10:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:10:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:10:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:10:25,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:10:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:10:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:10:25,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:10:27,692 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:10:27,692 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:10:27,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:10:27 BoogieIcfgContainer [2020-10-28 18:10:27,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:10:27,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:10:27,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:10:27,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:10:27,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:10:24" (1/3) ... [2020-10-28 18:10:27,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509021e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:10:27, skipping insertion in model container [2020-10-28 18:10:27,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:10:25" (2/3) ... [2020-10-28 18:10:27,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509021e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:10:27, skipping insertion in model container [2020-10-28 18:10:27,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:10:27" (3/3) ... [2020-10-28 18:10:27,707 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 18:10:27,720 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:10:27,727 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:10:27,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:10:27,779 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:10:27,779 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:10:27,779 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:10:27,779 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:10:27,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:10:27,780 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:10:27,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:10:27,780 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:10:27,808 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states. [2020-10-28 18:10:27,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 18:10:27,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:27,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:27,828 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash -199063433, now seen corresponding path program 1 times [2020-10-28 18:10:27,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:27,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768639325] [2020-10-28 18:10:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:28,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:29,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:29,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:29,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:29,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:33,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:33,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 18:10:33,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:10:33,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 18:10:33,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:33,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:10:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 18:10:33,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 18:10:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:10:34,065 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:10:34,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:34,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:34,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:34,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:34,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:10:34,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:34,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:10:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:34,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768639325] [2020-10-28 18:10:34,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:34,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:10:34,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46496388] [2020-10-28 18:10:34,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:10:34,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:34,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:10:34,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:10:34,227 INFO L87 Difference]: Start difference. First operand 386 states. Second operand 4 states. [2020-10-28 18:10:34,846 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:10:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:37,445 INFO L93 Difference]: Finished difference Result 681 states and 1209 transitions. [2020-10-28 18:10:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:10:37,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-28 18:10:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:37,468 INFO L225 Difference]: With dead ends: 681 [2020-10-28 18:10:37,468 INFO L226 Difference]: Without dead ends: 540 [2020-10-28 18:10:37,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-28 18:10:37,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 537. [2020-10-28 18:10:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-28 18:10:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 790 transitions. [2020-10-28 18:10:37,578 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 790 transitions. Word has length 144 [2020-10-28 18:10:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:37,580 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 790 transitions. [2020-10-28 18:10:37,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:10:37,580 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 790 transitions. [2020-10-28 18:10:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 18:10:37,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:37,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:37,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:10:37,595 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:37,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1556500780, now seen corresponding path program 1 times [2020-10-28 18:10:37,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:37,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991779630] [2020-10-28 18:10:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:37,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:37,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:38,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:42,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:42,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 18:10:42,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:10:42,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:10:42,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:42,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:10:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:10:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 18:10:42,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:10:43,330 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:10:43,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:43,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:43,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:43,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:43,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 18:10:43,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:43,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:43,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:43,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:10:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:43,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991779630] [2020-10-28 18:10:43,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:43,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:10:43,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293869110] [2020-10-28 18:10:43,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:10:43,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:43,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:10:43,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:43,509 INFO L87 Difference]: Start difference. First operand 537 states and 790 transitions. Second operand 5 states. [2020-10-28 18:10:46,190 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:10:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:47,431 INFO L93 Difference]: Finished difference Result 1562 states and 2295 transitions. [2020-10-28 18:10:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:10:47,432 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-28 18:10:47,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:47,444 INFO L225 Difference]: With dead ends: 1562 [2020-10-28 18:10:47,444 INFO L226 Difference]: Without dead ends: 1038 [2020-10-28 18:10:47,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:10:47,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-28 18:10:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1016. [2020-10-28 18:10:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1016 states. [2020-10-28 18:10:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1485 transitions. [2020-10-28 18:10:47,566 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1485 transitions. Word has length 144 [2020-10-28 18:10:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:47,569 INFO L481 AbstractCegarLoop]: Abstraction has 1016 states and 1485 transitions. [2020-10-28 18:10:47,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:10:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1485 transitions. [2020-10-28 18:10:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 18:10:47,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:47,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:47,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:10:47,575 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:47,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:47,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1470653839, now seen corresponding path program 1 times [2020-10-28 18:10:47,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:47,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634639779] [2020-10-28 18:10:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:47,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:48,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:48,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:50,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:52,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:52,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 18:10:52,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:10:52,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 18:10:52,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:52,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:52,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:10:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:10:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:10:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:10:53,253 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:10:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:10:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:53,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:10:53,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:10:53,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:10:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 18:10:53,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:10:53,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:10:53,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:10:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:10:53,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:10:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:10:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:10:53,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634639779] [2020-10-28 18:10:53,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:10:53,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:10:53,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713299019] [2020-10-28 18:10:53,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:10:53,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:10:53,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:10:53,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:10:53,408 INFO L87 Difference]: Start difference. First operand 1016 states and 1485 transitions. Second operand 5 states. [2020-10-28 18:10:56,161 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:10:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:10:57,387 INFO L93 Difference]: Finished difference Result 2936 states and 4275 transitions. [2020-10-28 18:10:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:10:57,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-28 18:10:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:10:57,400 INFO L225 Difference]: With dead ends: 2936 [2020-10-28 18:10:57,401 INFO L226 Difference]: Without dead ends: 1952 [2020-10-28 18:10:57,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:10:57,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2020-10-28 18:10:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1930. [2020-10-28 18:10:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-28 18:10:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2791 transitions. [2020-10-28 18:10:57,510 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2791 transitions. Word has length 145 [2020-10-28 18:10:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:10:57,511 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 2791 transitions. [2020-10-28 18:10:57,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:10:57,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2791 transitions. [2020-10-28 18:10:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 18:10:57,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:10:57,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:10:57,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:10:57,516 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:10:57,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:10:57,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1915405426, now seen corresponding path program 1 times [2020-10-28 18:10:57,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:10:57,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202067051] [2020-10-28 18:10:57,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:10:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:10:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:57,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:58,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:10:58,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:02,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:02,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 18:11:02,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:11:02,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:11:02,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:02,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:11:02,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:11:02,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 18:11:02,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:11:03,142 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:11:03,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:03,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:03,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:03,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:03,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:03,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:11:03,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:03,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:03,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:03,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202067051] [2020-10-28 18:11:03,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:03,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:03,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528657526] [2020-10-28 18:11:03,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:11:03,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:03,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:11:03,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:11:03,248 INFO L87 Difference]: Start difference. First operand 1930 states and 2791 transitions. Second operand 5 states. [2020-10-28 18:11:06,314 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:11:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:07,846 INFO L93 Difference]: Finished difference Result 5383 states and 7808 transitions. [2020-10-28 18:11:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:11:07,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-28 18:11:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:07,869 INFO L225 Difference]: With dead ends: 5383 [2020-10-28 18:11:07,869 INFO L226 Difference]: Without dead ends: 3727 [2020-10-28 18:11:07,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:11:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2020-10-28 18:11:08,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3710. [2020-10-28 18:11:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3710 states. [2020-10-28 18:11:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 5302 transitions. [2020-10-28 18:11:08,098 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 5302 transitions. Word has length 146 [2020-10-28 18:11:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:08,098 INFO L481 AbstractCegarLoop]: Abstraction has 3710 states and 5302 transitions. [2020-10-28 18:11:08,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:11:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 5302 transitions. [2020-10-28 18:11:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 18:11:08,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:08,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:08,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:11:08,106 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:08,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:08,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1179147950, now seen corresponding path program 1 times [2020-10-28 18:11:08,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:08,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911188959] [2020-10-28 18:11:08,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:08,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:08,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:08,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:08,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:09,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:12,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:13,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:13,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 18:11:13,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:11:13,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 18:11:13,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:13,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:13,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:11:13,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:11:13,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 18:11:13,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:13,745 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:11:13,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:13,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:13,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:13,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:11:13,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:13,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:13,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:11:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:13,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911188959] [2020-10-28 18:11:13,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:13,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:13,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282939812] [2020-10-28 18:11:13,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:11:13,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:13,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:11:13,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:11:13,899 INFO L87 Difference]: Start difference. First operand 3710 states and 5302 transitions. Second operand 5 states. [2020-10-28 18:11:16,977 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:11:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:18,621 INFO L93 Difference]: Finished difference Result 10290 states and 14752 transitions. [2020-10-28 18:11:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:11:18,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-28 18:11:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:18,657 INFO L225 Difference]: With dead ends: 10290 [2020-10-28 18:11:18,657 INFO L226 Difference]: Without dead ends: 7192 [2020-10-28 18:11:18,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:11:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2020-10-28 18:11:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 7166. [2020-10-28 18:11:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7166 states. [2020-10-28 18:11:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7166 states to 7166 states and 10120 transitions. [2020-10-28 18:11:19,203 INFO L78 Accepts]: Start accepts. Automaton has 7166 states and 10120 transitions. Word has length 147 [2020-10-28 18:11:19,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:19,204 INFO L481 AbstractCegarLoop]: Abstraction has 7166 states and 10120 transitions. [2020-10-28 18:11:19,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:11:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 7166 states and 10120 transitions. [2020-10-28 18:11:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 18:11:19,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:19,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:19,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:11:19,217 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:19,218 INFO L82 PathProgramCache]: Analyzing trace with hash 242356048, now seen corresponding path program 1 times [2020-10-28 18:11:19,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:19,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058653438] [2020-10-28 18:11:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:19,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:19,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:19,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:19,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:24,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:24,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 18:11:24,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:11:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:11:24,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:24,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:11:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:11:24,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 18:11:24,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:24,845 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:11:24,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:24,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:24,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:24,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:24,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:24,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:11:24,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:24,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:24,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:24,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058653438] [2020-10-28 18:11:24,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:24,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:24,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386725053] [2020-10-28 18:11:24,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:11:24,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:24,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:11:24,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:11:24,940 INFO L87 Difference]: Start difference. First operand 7166 states and 10120 transitions. Second operand 5 states. [2020-10-28 18:11:27,720 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:11:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:29,288 INFO L93 Difference]: Finished difference Result 19594 states and 27466 transitions. [2020-10-28 18:11:29,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:11:29,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-28 18:11:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:29,363 INFO L225 Difference]: With dead ends: 19594 [2020-10-28 18:11:29,364 INFO L226 Difference]: Without dead ends: 12596 [2020-10-28 18:11:29,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:11:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12596 states. [2020-10-28 18:11:30,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12596 to 12570. [2020-10-28 18:11:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12570 states. [2020-10-28 18:11:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12570 states to 12570 states and 17392 transitions. [2020-10-28 18:11:30,347 INFO L78 Accepts]: Start accepts. Automaton has 12570 states and 17392 transitions. Word has length 148 [2020-10-28 18:11:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:30,348 INFO L481 AbstractCegarLoop]: Abstraction has 12570 states and 17392 transitions. [2020-10-28 18:11:30,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:11:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 12570 states and 17392 transitions. [2020-10-28 18:11:30,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 18:11:30,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:30,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:30,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:11:30,369 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:30,370 INFO L82 PathProgramCache]: Analyzing trace with hash -2053589837, now seen corresponding path program 1 times [2020-10-28 18:11:30,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:30,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334808599] [2020-10-28 18:11:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:30,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:30,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:30,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:30,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:35,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:35,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 18:11:35,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:11:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:11:35,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:35,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:11:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:11:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 18:11:35,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:35,911 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:11:35,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:35,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:35,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:35,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:35,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:35,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:11:35,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:35,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:11:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:35,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334808599] [2020-10-28 18:11:35,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:35,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:35,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716572251] [2020-10-28 18:11:35,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:11:35,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:35,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:11:35,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:11:35,983 INFO L87 Difference]: Start difference. First operand 12570 states and 17392 transitions. Second operand 5 states. [2020-10-28 18:11:38,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:38,358 INFO L93 Difference]: Finished difference Result 22081 states and 30498 transitions. [2020-10-28 18:11:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:11:38,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-28 18:11:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:38,381 INFO L225 Difference]: With dead ends: 22081 [2020-10-28 18:11:38,381 INFO L226 Difference]: Without dead ends: 9627 [2020-10-28 18:11:38,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:11:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9627 states. [2020-10-28 18:11:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9627 to 9627. [2020-10-28 18:11:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9627 states. [2020-10-28 18:11:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 13280 transitions. [2020-10-28 18:11:39,074 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 13280 transitions. Word has length 149 [2020-10-28 18:11:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:39,074 INFO L481 AbstractCegarLoop]: Abstraction has 9627 states and 13280 transitions. [2020-10-28 18:11:39,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:11:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 13280 transitions. [2020-10-28 18:11:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 18:11:39,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:39,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:39,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:11:39,090 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:39,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:39,090 INFO L82 PathProgramCache]: Analyzing trace with hash -659606187, now seen corresponding path program 1 times [2020-10-28 18:11:39,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:39,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760277103] [2020-10-28 18:11:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:39,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:39,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:39,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:39,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 18:11:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:11:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:11:44,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:44,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:11:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:11:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 18:11:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:44,668 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:11:44,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:44,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:44,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:44,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:44,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:44,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:11:44,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:44,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:44,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:44,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:44,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:44,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:44,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760277103] [2020-10-28 18:11:44,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:44,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:11:44,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003746822] [2020-10-28 18:11:44,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:11:44,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:44,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:11:44,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:11:44,733 INFO L87 Difference]: Start difference. First operand 9627 states and 13280 transitions. Second operand 5 states. [2020-10-28 18:11:48,331 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:11:50,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:11:50,186 INFO L93 Difference]: Finished difference Result 24641 states and 33971 transitions. [2020-10-28 18:11:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:11:50,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 18:11:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:11:50,222 INFO L225 Difference]: With dead ends: 24641 [2020-10-28 18:11:50,222 INFO L226 Difference]: Without dead ends: 15658 [2020-10-28 18:11:50,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:11:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15658 states. [2020-10-28 18:11:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15658 to 15638. [2020-10-28 18:11:51,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15638 states. [2020-10-28 18:11:51,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15638 states to 15638 states and 21187 transitions. [2020-10-28 18:11:51,293 INFO L78 Accepts]: Start accepts. Automaton has 15638 states and 21187 transitions. Word has length 156 [2020-10-28 18:11:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:11:51,293 INFO L481 AbstractCegarLoop]: Abstraction has 15638 states and 21187 transitions. [2020-10-28 18:11:51,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:11:51,293 INFO L276 IsEmpty]: Start isEmpty. Operand 15638 states and 21187 transitions. [2020-10-28 18:11:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:11:51,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:11:51,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:11:51,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:11:51,318 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:11:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:11:51,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1210628705, now seen corresponding path program 1 times [2020-10-28 18:11:51,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:11:51,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838507367] [2020-10-28 18:11:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:11:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:51,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:51,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:51,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:51,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:56,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:56,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:11:56,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:11:56,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:11:56,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:56,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:11:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 18:11:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 18:11:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:56,828 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:11:56,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:11:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:11:56,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:11:56,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:11:56,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:11:56,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:11:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:11:56,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:11:56,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:11:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:11:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:11:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:11:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:11:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:11:56,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838507367] [2020-10-28 18:11:56,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:11:56,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:11:56,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220774354] [2020-10-28 18:11:56,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:11:56,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:11:56,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:11:56,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:11:56,893 INFO L87 Difference]: Start difference. First operand 15638 states and 21187 transitions. Second operand 4 states. [2020-10-28 18:11:59,601 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:12:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:01,210 INFO L93 Difference]: Finished difference Result 39530 states and 54672 transitions. [2020-10-28 18:12:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:12:01,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-28 18:12:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:01,280 INFO L225 Difference]: With dead ends: 39530 [2020-10-28 18:12:01,280 INFO L226 Difference]: Without dead ends: 28486 [2020-10-28 18:12:01,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28486 states. [2020-10-28 18:12:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28486 to 28456. [2020-10-28 18:12:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28456 states. [2020-10-28 18:12:03,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28456 states to 28456 states and 38737 transitions. [2020-10-28 18:12:03,339 INFO L78 Accepts]: Start accepts. Automaton has 28456 states and 38737 transitions. Word has length 158 [2020-10-28 18:12:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:03,339 INFO L481 AbstractCegarLoop]: Abstraction has 28456 states and 38737 transitions. [2020-10-28 18:12:03,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:12:03,339 INFO L276 IsEmpty]: Start isEmpty. Operand 28456 states and 38737 transitions. [2020-10-28 18:12:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:12:03,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:03,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:03,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:12:03,376 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:03,376 INFO L82 PathProgramCache]: Analyzing trace with hash -784175066, now seen corresponding path program 1 times [2020-10-28 18:12:03,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:03,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189735270] [2020-10-28 18:12:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:03,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:03,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:08,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:08,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:12:08,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:12:08,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:12:08,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:08,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:08,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:12:08,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:12:08,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 18:12:08,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:08,966 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:12:08,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:09,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:09,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 18:12:09,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:09,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:12:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:12:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:09,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189735270] [2020-10-28 18:12:09,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:09,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:09,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527545947] [2020-10-28 18:12:09,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:12:09,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:09,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:12:09,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:12:09,071 INFO L87 Difference]: Start difference. First operand 28456 states and 38737 transitions. Second operand 6 states. [2020-10-28 18:12:09,581 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 18:12:12,226 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-28 18:12:13,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:13,800 INFO L93 Difference]: Finished difference Result 46830 states and 65732 transitions. [2020-10-28 18:12:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:12:13,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-28 18:12:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:13,857 INFO L225 Difference]: With dead ends: 46830 [2020-10-28 18:12:13,857 INFO L226 Difference]: Without dead ends: 25528 [2020-10-28 18:12:13,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:12:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25528 states. [2020-10-28 18:12:15,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25528 to 25501. [2020-10-28 18:12:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25501 states. [2020-10-28 18:12:15,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25501 states to 25501 states and 35646 transitions. [2020-10-28 18:12:15,732 INFO L78 Accepts]: Start accepts. Automaton has 25501 states and 35646 transitions. Word has length 158 [2020-10-28 18:12:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:15,733 INFO L481 AbstractCegarLoop]: Abstraction has 25501 states and 35646 transitions. [2020-10-28 18:12:15,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:12:15,733 INFO L276 IsEmpty]: Start isEmpty. Operand 25501 states and 35646 transitions. [2020-10-28 18:12:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:12:15,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:15,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:15,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:12:15,773 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:15,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:15,773 INFO L82 PathProgramCache]: Analyzing trace with hash 198537254, now seen corresponding path program 1 times [2020-10-28 18:12:15,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:15,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700983103] [2020-10-28 18:12:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:16,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:20,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:20,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:12:20,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:12:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:12:20,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:20,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:12:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 18:12:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:21,322 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:12:21,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:21,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:21,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:21,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:21,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:12:21,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:21,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:21,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700983103] [2020-10-28 18:12:21,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:21,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:21,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262215988] [2020-10-28 18:12:21,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:21,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:21,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:21,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:21,370 INFO L87 Difference]: Start difference. First operand 25501 states and 35646 transitions. Second operand 5 states. [2020-10-28 18:12:24,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:24,480 INFO L93 Difference]: Finished difference Result 45993 states and 64248 transitions. [2020-10-28 18:12:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:12:24,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 18:12:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:24,519 INFO L225 Difference]: With dead ends: 45993 [2020-10-28 18:12:24,520 INFO L226 Difference]: Without dead ends: 20714 [2020-10-28 18:12:24,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:12:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20714 states. [2020-10-28 18:12:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20714 to 20714. [2020-10-28 18:12:25,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20714 states. [2020-10-28 18:12:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20714 states to 20714 states and 28857 transitions. [2020-10-28 18:12:25,930 INFO L78 Accepts]: Start accepts. Automaton has 20714 states and 28857 transitions. Word has length 158 [2020-10-28 18:12:25,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:25,931 INFO L481 AbstractCegarLoop]: Abstraction has 20714 states and 28857 transitions. [2020-10-28 18:12:25,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:25,931 INFO L276 IsEmpty]: Start isEmpty. Operand 20714 states and 28857 transitions. [2020-10-28 18:12:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 18:12:25,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:25,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:25,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:12:25,945 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:25,946 INFO L82 PathProgramCache]: Analyzing trace with hash -280571903, now seen corresponding path program 1 times [2020-10-28 18:12:25,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:25,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212357628] [2020-10-28 18:12:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:26,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:26,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:26,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:31,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:31,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 18:12:31,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:12:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:12:31,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:31,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:12:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 18:12:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 18:12:31,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:31,594 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:12:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:31,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:31,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:31,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:31,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:31,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:12:31,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:31,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:31,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212357628] [2020-10-28 18:12:31,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:31,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:12:31,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985376002] [2020-10-28 18:12:31,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:12:31,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:31,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:12:31,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:12:31,666 INFO L87 Difference]: Start difference. First operand 20714 states and 28857 transitions. Second operand 6 states. [2020-10-28 18:12:32,145 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:12:35,345 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:12:35,769 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:12:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:38,517 INFO L93 Difference]: Finished difference Result 57358 states and 83525 transitions. [2020-10-28 18:12:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:12:38,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-28 18:12:38,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:38,577 INFO L225 Difference]: With dead ends: 57358 [2020-10-28 18:12:38,577 INFO L226 Difference]: Without dead ends: 48094 [2020-10-28 18:12:38,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:12:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48094 states. [2020-10-28 18:12:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48094 to 34686. [2020-10-28 18:12:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34686 states. [2020-10-28 18:12:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34686 states to 34686 states and 48891 transitions. [2020-10-28 18:12:41,158 INFO L78 Accepts]: Start accepts. Automaton has 34686 states and 48891 transitions. Word has length 164 [2020-10-28 18:12:41,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:41,159 INFO L481 AbstractCegarLoop]: Abstraction has 34686 states and 48891 transitions. [2020-10-28 18:12:41,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:12:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 34686 states and 48891 transitions. [2020-10-28 18:12:41,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 18:12:41,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:41,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:41,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:12:41,178 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:41,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:41,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1913526872, now seen corresponding path program 1 times [2020-10-28 18:12:41,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:41,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045742044] [2020-10-28 18:12:41,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:41,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:41,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:46,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:46,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 18:12:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:12:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:12:46,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:46,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:12:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 18:12:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 18:12:46,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:46,756 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:12:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:46,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:46,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:46,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:12:46,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:46,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:46,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:46,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045742044] [2020-10-28 18:12:46,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:46,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:12:46,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140552142] [2020-10-28 18:12:46,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:12:46,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:46,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:12:46,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:12:46,823 INFO L87 Difference]: Start difference. First operand 34686 states and 48891 transitions. Second operand 6 states. [2020-10-28 18:12:47,282 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:12:51,240 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-28 18:12:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:54,677 INFO L93 Difference]: Finished difference Result 74042 states and 106441 transitions. [2020-10-28 18:12:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:12:54,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2020-10-28 18:12:54,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:54,889 INFO L225 Difference]: With dead ends: 74042 [2020-10-28 18:12:54,889 INFO L226 Difference]: Without dead ends: 55007 [2020-10-28 18:12:54,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:12:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55007 states. [2020-10-28 18:12:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55007 to 54752. [2020-10-28 18:12:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54752 states. [2020-10-28 18:12:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54752 states to 54752 states and 76043 transitions. [2020-10-28 18:12:58,801 INFO L78 Accepts]: Start accepts. Automaton has 54752 states and 76043 transitions. Word has length 164 [2020-10-28 18:12:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:58,802 INFO L481 AbstractCegarLoop]: Abstraction has 54752 states and 76043 transitions. [2020-10-28 18:12:58,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:12:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 54752 states and 76043 transitions. [2020-10-28 18:12:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 18:12:58,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:58,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:58,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:12:58,834 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:58,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:58,835 INFO L82 PathProgramCache]: Analyzing trace with hash -672990904, now seen corresponding path program 1 times [2020-10-28 18:12:58,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:58,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588485748] [2020-10-28 18:12:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:59,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:03,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:03,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 18:13:03,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:13:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 18:13:03,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:03,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 18:13:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:13:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:04,431 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:04,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:04,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:04,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:04,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:04,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:13:04,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:04,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:04,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:04,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:04,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588485748] [2020-10-28 18:13:04,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:04,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:04,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585406906] [2020-10-28 18:13:04,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:04,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:04,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:04,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:04,481 INFO L87 Difference]: Start difference. First operand 54752 states and 76043 transitions. Second operand 5 states. [2020-10-28 18:13:09,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:09,567 INFO L93 Difference]: Finished difference Result 98860 states and 137498 transitions. [2020-10-28 18:13:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:09,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-28 18:13:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:09,616 INFO L225 Difference]: With dead ends: 98860 [2020-10-28 18:13:09,616 INFO L226 Difference]: Without dead ends: 44185 [2020-10-28 18:13:09,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:13:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44185 states. [2020-10-28 18:13:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44185 to 44185. [2020-10-28 18:13:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44185 states. [2020-10-28 18:13:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44185 states to 44185 states and 61552 transitions. [2020-10-28 18:13:12,890 INFO L78 Accepts]: Start accepts. Automaton has 44185 states and 61552 transitions. Word has length 164 [2020-10-28 18:13:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:12,891 INFO L481 AbstractCegarLoop]: Abstraction has 44185 states and 61552 transitions. [2020-10-28 18:13:12,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 44185 states and 61552 transitions. [2020-10-28 18:13:12,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 18:13:12,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:12,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:13:12,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:13:12,921 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:12,922 INFO L82 PathProgramCache]: Analyzing trace with hash 393802375, now seen corresponding path program 1 times [2020-10-28 18:13:12,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:12,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404210718] [2020-10-28 18:13:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:13,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:13,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:14,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:17,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:17,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:18,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:18,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 18:13:18,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:13:18,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:13:18,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:18,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 18:13:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 18:13:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:18,626 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:18,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:18,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:18,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:18,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:18,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:13:18,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:18,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:18,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:18,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404210718] [2020-10-28 18:13:18,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:18,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:18,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688212696] [2020-10-28 18:13:18,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:18,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:18,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:18,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:18,686 INFO L87 Difference]: Start difference. First operand 44185 states and 61552 transitions. Second operand 5 states. [2020-10-28 18:13:19,163 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-28 18:13:24,434 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-28 18:13:30,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:30,810 INFO L93 Difference]: Finished difference Result 141502 states and 199848 transitions. [2020-10-28 18:13:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:13:30,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-28 18:13:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:30,963 INFO L225 Difference]: With dead ends: 141502 [2020-10-28 18:13:30,964 INFO L226 Difference]: Without dead ends: 102278 [2020-10-28 18:13:31,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:13:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102278 states. [2020-10-28 18:13:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102278 to 102225. [2020-10-28 18:13:38,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102225 states. [2020-10-28 18:13:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102225 states to 102225 states and 142530 transitions. [2020-10-28 18:13:39,185 INFO L78 Accepts]: Start accepts. Automaton has 102225 states and 142530 transitions. Word has length 172 [2020-10-28 18:13:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:39,185 INFO L481 AbstractCegarLoop]: Abstraction has 102225 states and 142530 transitions. [2020-10-28 18:13:39,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 102225 states and 142530 transitions. [2020-10-28 18:13:39,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 18:13:39,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:39,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:13:39,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:13:39,229 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:39,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:39,229 INFO L82 PathProgramCache]: Analyzing trace with hash -580534878, now seen corresponding path program 1 times [2020-10-28 18:13:39,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:39,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530443049] [2020-10-28 18:13:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:39,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:39,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:39,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:39,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:42,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:44,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:44,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-28 18:13:44,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:13:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:13:44,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:44,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:13:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:13:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 18:13:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:44,758 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-28 18:13:44,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:44,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:44,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:44,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:44,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:13:44,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:44,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:13:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:44,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:13:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:44,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530443049] [2020-10-28 18:13:44,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:44,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:44,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296236261] [2020-10-28 18:13:44,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:13:44,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:44,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:13:44,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:13:44,832 INFO L87 Difference]: Start difference. First operand 102225 states and 142530 transitions. Second operand 6 states. [2020-10-28 18:13:45,342 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-28 18:13:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:52,589 INFO L93 Difference]: Finished difference Result 141638 states and 199892 transitions. [2020-10-28 18:13:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:13:52,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-10-28 18:13:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:52,671 INFO L225 Difference]: With dead ends: 141638 [2020-10-28 18:13:52,672 INFO L226 Difference]: Without dead ends: 60071 [2020-10-28 18:13:52,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:13:52,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60071 states. [2020-10-28 18:13:56,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60071 to 44185. [2020-10-28 18:13:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44185 states. [2020-10-28 18:13:56,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44185 states to 44185 states and 60684 transitions. [2020-10-28 18:13:56,542 INFO L78 Accepts]: Start accepts. Automaton has 44185 states and 60684 transitions. Word has length 172 [2020-10-28 18:13:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:56,543 INFO L481 AbstractCegarLoop]: Abstraction has 44185 states and 60684 transitions. [2020-10-28 18:13:56,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:13:56,543 INFO L276 IsEmpty]: Start isEmpty. Operand 44185 states and 60684 transitions. [2020-10-28 18:13:56,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-28 18:13:56,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:56,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:13:56,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:13:56,564 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:56,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1675794324, now seen corresponding path program 1 times [2020-10-28 18:13:56,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:56,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752059193] [2020-10-28 18:13:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:56,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking...