/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:05:09,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:05:09,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:05:09,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:05:09,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:05:09,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:05:09,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:05:09,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:05:09,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:05:09,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:05:09,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:05:09,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:05:09,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:05:09,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:05:09,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:05:09,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:05:09,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:05:09,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:05:09,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:05:09,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:05:09,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:05:09,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:05:09,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:05:09,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:05:09,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:05:09,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:05:09,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:05:09,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:05:09,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:05:09,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:05:09,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:05:09,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:05:09,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:05:09,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:05:09,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:05:09,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:05:09,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:05:09,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:05:09,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:05:09,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:05:09,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:05:09,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 09:05:09,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:05:09,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:05:10,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:05:10,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:05:10,001 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:05:10,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:05:10,001 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:05:10,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:05:10,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:05:10,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:05:10,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:05:10,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:05:10,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:05:10,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:05:10,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:05:10,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:05:10,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:05:10,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:05:10,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:05:10,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:05:10,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:05:10,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:05:10,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:05:10,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:05:10,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:05:10,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:05:10,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:05:10,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:05:10,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:05:10,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:05:10,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:05:10,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:05:10,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:05:10,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:05:10,357 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:05:10,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:05:10,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aded8d0a/458307c96a784dd4bda978db99d88ce6/FLAGe0d5ef88e [2020-10-14 09:05:10,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:05:10,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:05:10,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aded8d0a/458307c96a784dd4bda978db99d88ce6/FLAGe0d5ef88e [2020-10-14 09:05:11,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aded8d0a/458307c96a784dd4bda978db99d88ce6 [2020-10-14 09:05:11,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:05:11,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:05:11,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:05:11,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:05:11,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:05:11,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:05:11" (1/1) ... [2020-10-14 09:05:11,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12eafce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11, skipping insertion in model container [2020-10-14 09:05:11,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:05:11" (1/1) ... [2020-10-14 09:05:11,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:05:11,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:05:11,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:05:11,589 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:05:11,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:05:11,796 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:05:11,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11 WrapperNode [2020-10-14 09:05:11,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:05:11,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:05:11,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:05:11,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:05:11,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11" (1/1) ... [2020-10-14 09:05:11,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11" (1/1) ... [2020-10-14 09:05:11,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11" (1/1) ... [2020-10-14 09:05:11,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11" (1/1) ... [2020-10-14 09:05:11,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11" (1/1) ... [2020-10-14 09:05:11,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11" (1/1) ... [2020-10-14 09:05:11,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11" (1/1) ... [2020-10-14 09:05:11,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:05:11,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:05:11,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:05:11,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:05:11,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:05:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:05:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:05:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:05:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:05:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:05:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:05:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:05:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:05:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:05:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:05:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:05:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:05:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:05:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:05:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:05:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:05:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:05:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:05:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:05:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:05:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:05:12,671 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:05:12,672 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:05:12,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:05:12 BoogieIcfgContainer [2020-10-14 09:05:12,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:05:12,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:05:12,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:05:12,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:05:12,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:05:11" (1/3) ... [2020-10-14 09:05:12,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd418f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:05:12, skipping insertion in model container [2020-10-14 09:05:12,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:05:11" (2/3) ... [2020-10-14 09:05:12,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd418f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:05:12, skipping insertion in model container [2020-10-14 09:05:12,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:05:12" (3/3) ... [2020-10-14 09:05:12,686 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 09:05:12,697 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:05:12,705 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:05:12,720 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:05:12,744 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:05:12,744 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:05:12,744 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:05:12,745 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:05:12,745 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:05:12,745 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:05:12,745 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:05:12,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:05:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-10-14 09:05:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 09:05:12,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:12,776 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] [2020-10-14 09:05:12,777 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:12,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:12,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1362834774, now seen corresponding path program 1 times [2020-10-14 09:05:12,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:12,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587023844] [2020-10-14 09:05:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:13,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:14,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:14,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 09:05:14,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 09:05:14,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1473 [2020-10-14 09:05:14,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:14,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:14,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:14,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 09:05:14,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 09:05:14,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:05:14,760 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:05:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:14,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:14,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:14,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:14,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:14,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:05:14,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:14,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:14,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:14,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587023844] [2020-10-14 09:05:14,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:14,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:14,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387156468] [2020-10-14 09:05:14,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:14,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:14,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:14,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:14,854 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 4 states. [2020-10-14 09:05:15,025 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-14 09:05:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:15,732 INFO L93 Difference]: Finished difference Result 291 states and 469 transitions. [2020-10-14 09:05:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:15,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-14 09:05:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:15,756 INFO L225 Difference]: With dead ends: 291 [2020-10-14 09:05:15,757 INFO L226 Difference]: Without dead ends: 220 [2020-10-14 09:05:15,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-14 09:05:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 218. [2020-10-14 09:05:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-14 09:05:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 324 transitions. [2020-10-14 09:05:15,839 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 324 transitions. Word has length 52 [2020-10-14 09:05:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:15,839 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 324 transitions. [2020-10-14 09:05:15,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 324 transitions. [2020-10-14 09:05:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:05:15,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:15,842 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] [2020-10-14 09:05:15,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:05:15,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:15,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:15,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2068505343, now seen corresponding path program 1 times [2020-10-14 09:05:15,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:15,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516921325] [2020-10-14 09:05:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:15,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:15,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:17,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:19,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:19,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:05:19,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:05:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3601 [2020-10-14 09:05:19,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:19,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 09:05:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:05:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:19,645 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:05:19,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:19,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:19,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:19,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:19,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:19,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:05:19,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:19,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:19,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516921325] [2020-10-14 09:05:19,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:19,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:19,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242840808] [2020-10-14 09:05:19,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:19,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:19,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:19,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:19,703 INFO L87 Difference]: Start difference. First operand 218 states and 324 transitions. Second operand 4 states. [2020-10-14 09:05:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:20,346 INFO L93 Difference]: Finished difference Result 541 states and 827 transitions. [2020-10-14 09:05:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:20,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-14 09:05:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:20,356 INFO L225 Difference]: With dead ends: 541 [2020-10-14 09:05:20,356 INFO L226 Difference]: Without dead ends: 380 [2020-10-14 09:05:20,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:20,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-14 09:05:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 378. [2020-10-14 09:05:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-10-14 09:05:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 564 transitions. [2020-10-14 09:05:20,422 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 564 transitions. Word has length 55 [2020-10-14 09:05:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:20,423 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 564 transitions. [2020-10-14 09:05:20,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 564 transitions. [2020-10-14 09:05:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:05:20,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:20,430 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] [2020-10-14 09:05:20,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:05:20,430 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:20,431 INFO L82 PathProgramCache]: Analyzing trace with hash 2084656831, now seen corresponding path program 1 times [2020-10-14 09:05:20,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:20,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887106016] [2020-10-14 09:05:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:21,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:23,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:23,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:05:23,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:05:23,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2753 [2020-10-14 09:05:23,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:23,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:23,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 09:05:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:05:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:23,416 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:05:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:23,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:23,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:23,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:05:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:23,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:23,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887106016] [2020-10-14 09:05:23,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:23,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:23,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100263242] [2020-10-14 09:05:23,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:23,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:23,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:23,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:23,460 INFO L87 Difference]: Start difference. First operand 378 states and 564 transitions. Second operand 4 states. [2020-10-14 09:05:23,592 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-14 09:05:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:24,255 INFO L93 Difference]: Finished difference Result 892 states and 1353 transitions. [2020-10-14 09:05:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:24,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-14 09:05:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:24,260 INFO L225 Difference]: With dead ends: 892 [2020-10-14 09:05:24,260 INFO L226 Difference]: Without dead ends: 635 [2020-10-14 09:05:24,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2020-10-14 09:05:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 633. [2020-10-14 09:05:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-10-14 09:05:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 940 transitions. [2020-10-14 09:05:24,298 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 940 transitions. Word has length 55 [2020-10-14 09:05:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:24,299 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 940 transitions. [2020-10-14 09:05:24,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 940 transitions. [2020-10-14 09:05:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 09:05:24,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:24,302 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] [2020-10-14 09:05:24,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:05:24,303 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:24,303 INFO L82 PathProgramCache]: Analyzing trace with hash 63018877, now seen corresponding path program 1 times [2020-10-14 09:05:24,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:24,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024089588] [2020-10-14 09:05:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:24,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:24,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:24,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:26,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:26,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 09:05:26,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:05:26,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2060 [2020-10-14 09:05:26,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:26,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:26,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 09:05:26,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:05:26,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 09:05:26,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:26,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:26,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:26,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:05:26,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:26,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:26,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:26,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024089588] [2020-10-14 09:05:26,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:26,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:05:26,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309733957] [2020-10-14 09:05:26,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:05:26,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:26,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:05:26,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:05:26,541 INFO L87 Difference]: Start difference. First operand 633 states and 940 transitions. Second operand 4 states. [2020-10-14 09:05:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:27,287 INFO L93 Difference]: Finished difference Result 1609 states and 2406 transitions. [2020-10-14 09:05:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:05:27,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-14 09:05:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:27,293 INFO L225 Difference]: With dead ends: 1609 [2020-10-14 09:05:27,294 INFO L226 Difference]: Without dead ends: 1105 [2020-10-14 09:05:27,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:05:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-10-14 09:05:27,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1103. [2020-10-14 09:05:27,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-10-14 09:05:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1612 transitions. [2020-10-14 09:05:27,361 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1612 transitions. Word has length 55 [2020-10-14 09:05:27,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:27,362 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1612 transitions. [2020-10-14 09:05:27,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:05:27,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1612 transitions. [2020-10-14 09:05:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:05:27,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:27,372 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] [2020-10-14 09:05:27,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:05:27,373 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:27,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1271891637, now seen corresponding path program 1 times [2020-10-14 09:05:27,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:27,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995844799] [2020-10-14 09:05:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:27,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:27,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:29,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:29,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:05:29,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:05:29,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2510 [2020-10-14 09:05:29,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:29,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:29,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:05:29,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:05:29,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:30,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:30,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:30,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:30,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:30,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:05:30,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:30,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:30,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:30,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:30,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995844799] [2020-10-14 09:05:30,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:30,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:05:30,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838694656] [2020-10-14 09:05:30,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:30,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:30,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:30,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:30,052 INFO L87 Difference]: Start difference. First operand 1103 states and 1612 transitions. Second operand 6 states. [2020-10-14 09:05:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:30,859 INFO L93 Difference]: Finished difference Result 3007 states and 4475 transitions. [2020-10-14 09:05:30,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:05:30,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 09:05:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:30,871 INFO L225 Difference]: With dead ends: 3007 [2020-10-14 09:05:30,872 INFO L226 Difference]: Without dead ends: 2333 [2020-10-14 09:05:30,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:05:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2020-10-14 09:05:30,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 1309. [2020-10-14 09:05:30,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2020-10-14 09:05:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1927 transitions. [2020-10-14 09:05:30,958 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1927 transitions. Word has length 56 [2020-10-14 09:05:30,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:30,959 INFO L479 AbstractCegarLoop]: Abstraction has 1309 states and 1927 transitions. [2020-10-14 09:05:30,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:30,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1927 transitions. [2020-10-14 09:05:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 09:05:30,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:30,961 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] [2020-10-14 09:05:30,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:05:30,962 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:30,962 INFO L82 PathProgramCache]: Analyzing trace with hash 201481608, now seen corresponding path program 1 times [2020-10-14 09:05:30,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:30,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010774311] [2020-10-14 09:05:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:33,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:33,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 09:05:33,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:05:33,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2143 [2020-10-14 09:05:33,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:33,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:05:33,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 09:05:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:33,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:33,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:33,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:33,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:05:33,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:33,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:33,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:33,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:33,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010774311] [2020-10-14 09:05:33,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:33,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:05:33,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275095378] [2020-10-14 09:05:33,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:33,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:33,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:33,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:33,266 INFO L87 Difference]: Start difference. First operand 1309 states and 1927 transitions. Second operand 6 states. [2020-10-14 09:05:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:34,192 INFO L93 Difference]: Finished difference Result 3423 states and 5101 transitions. [2020-10-14 09:05:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:05:34,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-14 09:05:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:34,213 INFO L225 Difference]: With dead ends: 3423 [2020-10-14 09:05:34,213 INFO L226 Difference]: Without dead ends: 2749 [2020-10-14 09:05:34,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:05:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2020-10-14 09:05:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 1659. [2020-10-14 09:05:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-10-14 09:05:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2461 transitions. [2020-10-14 09:05:34,319 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2461 transitions. Word has length 56 [2020-10-14 09:05:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:34,320 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 2461 transitions. [2020-10-14 09:05:34,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:34,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2461 transitions. [2020-10-14 09:05:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 09:05:34,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:34,322 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] [2020-10-14 09:05:34,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:05:34,322 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:34,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:34,323 INFO L82 PathProgramCache]: Analyzing trace with hash 166132169, now seen corresponding path program 1 times [2020-10-14 09:05:34,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:34,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596004645] [2020-10-14 09:05:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:34,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:34,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:36,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:36,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 09:05:36,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:05:36,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2446 [2020-10-14 09:05:36,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:36,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 09:05:36,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 09:05:36,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:36,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:36,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:36,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:36,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:05:36,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:36,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:36,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:36,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:36,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596004645] [2020-10-14 09:05:36,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:36,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:05:36,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350511638] [2020-10-14 09:05:36,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:36,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:36,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:36,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:36,936 INFO L87 Difference]: Start difference. First operand 1659 states and 2461 transitions. Second operand 6 states. [2020-10-14 09:05:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:37,818 INFO L93 Difference]: Finished difference Result 3877 states and 5779 transitions. [2020-10-14 09:05:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 09:05:37,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-14 09:05:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:37,835 INFO L225 Difference]: With dead ends: 3877 [2020-10-14 09:05:37,836 INFO L226 Difference]: Without dead ends: 3203 [2020-10-14 09:05:37,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:05:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2020-10-14 09:05:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 2028. [2020-10-14 09:05:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2028 states. [2020-10-14 09:05:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3028 transitions. [2020-10-14 09:05:37,969 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3028 transitions. Word has length 57 [2020-10-14 09:05:37,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:37,969 INFO L479 AbstractCegarLoop]: Abstraction has 2028 states and 3028 transitions. [2020-10-14 09:05:37,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3028 transitions. [2020-10-14 09:05:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 09:05:37,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:37,972 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] [2020-10-14 09:05:37,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:05:37,972 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:37,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:37,973 INFO L82 PathProgramCache]: Analyzing trace with hash 120135899, now seen corresponding path program 1 times [2020-10-14 09:05:37,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:37,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029966348] [2020-10-14 09:05:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:38,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:38,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:38,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:38,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:38,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:38,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:38,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:43,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:43,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 09:05:43,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:05:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:05:43,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:43,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:05:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 09:05:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:43,183 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:05:43,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:43,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:43,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:43,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:43,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 09:05:43,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:43,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:05:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:05:43,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:43,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029966348] [2020-10-14 09:05:43,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:43,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:05:43,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475413616] [2020-10-14 09:05:43,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:43,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:43,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:43,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:43,249 INFO L87 Difference]: Start difference. First operand 2028 states and 3028 transitions. Second operand 6 states. [2020-10-14 09:05:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:44,115 INFO L93 Difference]: Finished difference Result 5595 states and 8384 transitions. [2020-10-14 09:05:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:05:44,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-14 09:05:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:44,135 INFO L225 Difference]: With dead ends: 5595 [2020-10-14 09:05:44,135 INFO L226 Difference]: Without dead ends: 3648 [2020-10-14 09:05:44,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:05:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3648 states. [2020-10-14 09:05:44,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3648 to 3633. [2020-10-14 09:05:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3633 states. [2020-10-14 09:05:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 5409 transitions. [2020-10-14 09:05:44,366 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 5409 transitions. Word has length 60 [2020-10-14 09:05:44,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:44,367 INFO L479 AbstractCegarLoop]: Abstraction has 3633 states and 5409 transitions. [2020-10-14 09:05:44,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:44,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 5409 transitions. [2020-10-14 09:05:44,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 09:05:44,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:44,370 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] [2020-10-14 09:05:44,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:05:44,370 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:44,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash -606344550, now seen corresponding path program 1 times [2020-10-14 09:05:44,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:44,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828191385] [2020-10-14 09:05:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:45,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:49,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 09:05:49,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:05:49,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:05:49,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:49,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 09:05:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 09:05:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:05:49,548 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:05:49,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:49,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:49,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:49,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:49,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:05:49,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:49,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:49,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:49,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828191385] [2020-10-14 09:05:49,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:49,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:05:49,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971263638] [2020-10-14 09:05:49,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:49,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:49,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:49,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:49,581 INFO L87 Difference]: Start difference. First operand 3633 states and 5409 transitions. Second operand 6 states. [2020-10-14 09:05:49,727 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-14 09:05:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:05:52,245 INFO L93 Difference]: Finished difference Result 27523 states and 41273 transitions. [2020-10-14 09:05:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:05:52,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-14 09:05:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:05:52,402 INFO L225 Difference]: With dead ends: 27523 [2020-10-14 09:05:52,402 INFO L226 Difference]: Without dead ends: 24249 [2020-10-14 09:05:52,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:05:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24249 states. [2020-10-14 09:05:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24249 to 12927. [2020-10-14 09:05:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12927 states. [2020-10-14 09:05:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12927 states to 12927 states and 19260 transitions. [2020-10-14 09:05:53,277 INFO L78 Accepts]: Start accepts. Automaton has 12927 states and 19260 transitions. Word has length 61 [2020-10-14 09:05:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:05:53,277 INFO L479 AbstractCegarLoop]: Abstraction has 12927 states and 19260 transitions. [2020-10-14 09:05:53,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:05:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 12927 states and 19260 transitions. [2020-10-14 09:05:53,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:05:53,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:05:53,283 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] [2020-10-14 09:05:53,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:05:53,283 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:05:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:05:53,284 INFO L82 PathProgramCache]: Analyzing trace with hash -398780749, now seen corresponding path program 1 times [2020-10-14 09:05:53,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:05:53,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947063624] [2020-10-14 09:05:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:05:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:53,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:57,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:57,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:58,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:58,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:05:58,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:05:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 09:05:58,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:58,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:05:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 09:05:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 09:05:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:58,469 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-10-14 09:05:58,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:05:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:05:58,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:05:58,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:05:58,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:05:58,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:05:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:05:58,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:05:58,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:05:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:05:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:05:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:05:58,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:05:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:05:58,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947063624] [2020-10-14 09:05:58,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:05:58,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:05:58,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18026529] [2020-10-14 09:05:58,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:05:58,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:05:58,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:05:58,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:05:58,499 INFO L87 Difference]: Start difference. First operand 12927 states and 19260 transitions. Second operand 6 states. [2020-10-14 09:05:58,653 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-14 09:06:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:04,082 INFO L93 Difference]: Finished difference Result 104610 states and 156375 transitions. [2020-10-14 09:06:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 09:06:04,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-14 09:06:04,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:04,348 INFO L225 Difference]: With dead ends: 104610 [2020-10-14 09:06:04,348 INFO L226 Difference]: Without dead ends: 92968 [2020-10-14 09:06:04,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:06:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92968 states. [2020-10-14 09:06:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92968 to 35610. [2020-10-14 09:06:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35610 states. [2020-10-14 09:06:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35610 states to 35610 states and 53480 transitions. [2020-10-14 09:06:07,938 INFO L78 Accepts]: Start accepts. Automaton has 35610 states and 53480 transitions. Word has length 62 [2020-10-14 09:06:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:07,938 INFO L479 AbstractCegarLoop]: Abstraction has 35610 states and 53480 transitions. [2020-10-14 09:06:07,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 35610 states and 53480 transitions. [2020-10-14 09:06:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 09:06:07,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:07,949 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] [2020-10-14 09:06:07,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:06:07,950 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:07,950 INFO L82 PathProgramCache]: Analyzing trace with hash 2041819286, now seen corresponding path program 1 times [2020-10-14 09:06:07,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:07,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059217758] [2020-10-14 09:06:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:08,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:10,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:11,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:12,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:12,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 09:06:12,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-14 09:06:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:06:12,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:12,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:06:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 09:06:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:13,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:13,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:13,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:13,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:13,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:06:13,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:13,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:13,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:06:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:13,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059217758] [2020-10-14 09:06:13,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:13,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:13,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741905882] [2020-10-14 09:06:13,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:13,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:13,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:13,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:13,135 INFO L87 Difference]: Start difference. First operand 35610 states and 53480 transitions. Second operand 6 states. [2020-10-14 09:06:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:23,217 INFO L93 Difference]: Finished difference Result 205378 states and 306406 transitions. [2020-10-14 09:06:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:06:23,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-14 09:06:23,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:23,834 INFO L225 Difference]: With dead ends: 205378 [2020-10-14 09:06:23,834 INFO L226 Difference]: Without dead ends: 173895 [2020-10-14 09:06:23,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:06:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173895 states. [2020-10-14 09:06:26,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173895 to 35213. [2020-10-14 09:06:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35213 states. [2020-10-14 09:06:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35213 states to 35213 states and 52476 transitions. [2020-10-14 09:06:26,618 INFO L78 Accepts]: Start accepts. Automaton has 35213 states and 52476 transitions. Word has length 62 [2020-10-14 09:06:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:26,619 INFO L479 AbstractCegarLoop]: Abstraction has 35213 states and 52476 transitions. [2020-10-14 09:06:26,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 35213 states and 52476 transitions. [2020-10-14 09:06:26,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 09:06:26,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:26,627 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] [2020-10-14 09:06:26,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:06:26,627 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:26,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1649227083, now seen corresponding path program 1 times [2020-10-14 09:06:26,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:26,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707652044] [2020-10-14 09:06:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:26,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:26,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:26,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:27,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:29,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:31,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:31,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 09:06:31,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:06:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:06:31,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:31,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:06:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:06:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:31,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:31,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:31,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:31,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:06:31,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:31,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:31,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:31,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:31,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707652044] [2020-10-14 09:06:31,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:31,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:31,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607504409] [2020-10-14 09:06:31,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:31,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:31,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:31,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:31,792 INFO L87 Difference]: Start difference. First operand 35213 states and 52476 transitions. Second operand 6 states. [2020-10-14 09:06:40,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:40,531 INFO L93 Difference]: Finished difference Result 155490 states and 230191 transitions. [2020-10-14 09:06:40,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:06:40,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-14 09:06:40,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:40,793 INFO L225 Difference]: With dead ends: 155490 [2020-10-14 09:06:40,793 INFO L226 Difference]: Without dead ends: 123396 [2020-10-14 09:06:40,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:06:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123396 states. [2020-10-14 09:06:43,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123396 to 34920. [2020-10-14 09:06:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34920 states. [2020-10-14 09:06:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34920 states to 34920 states and 51827 transitions. [2020-10-14 09:06:43,618 INFO L78 Accepts]: Start accepts. Automaton has 34920 states and 51827 transitions. Word has length 63 [2020-10-14 09:06:43,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:06:43,618 INFO L479 AbstractCegarLoop]: Abstraction has 34920 states and 51827 transitions. [2020-10-14 09:06:43,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:06:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand 34920 states and 51827 transitions. [2020-10-14 09:06:43,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 09:06:43,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:06:43,625 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] [2020-10-14 09:06:43,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:06:43,625 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:06:43,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:06:43,626 INFO L82 PathProgramCache]: Analyzing trace with hash 594855511, now seen corresponding path program 1 times [2020-10-14 09:06:43,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:06:43,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670056986] [2020-10-14 09:06:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:06:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:43,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:46,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:48,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:48,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 09:06:48,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:06:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-14 09:06:48,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:48,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:06:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:06:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 09:06:48,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:06:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:06:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:06:48,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:06:48,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:06:48,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:06:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:06:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:06:48,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:06:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:06:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:06:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:06:48,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:06:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:06:48,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670056986] [2020-10-14 09:06:48,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:06:48,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:06:48,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893403267] [2020-10-14 09:06:48,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:06:48,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:06:48,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:06:48,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:06:48,869 INFO L87 Difference]: Start difference. First operand 34920 states and 51827 transitions. Second operand 6 states. [2020-10-14 09:06:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:06:58,762 INFO L93 Difference]: Finished difference Result 172535 states and 253750 transitions. [2020-10-14 09:06:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 09:06:58,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-14 09:06:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:06:58,975 INFO L225 Difference]: With dead ends: 172535 [2020-10-14 09:06:58,975 INFO L226 Difference]: Without dead ends: 141797 [2020-10-14 09:06:59,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:06:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141797 states. [2020-10-14 09:07:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141797 to 34367. [2020-10-14 09:07:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34367 states. [2020-10-14 09:07:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34367 states to 34367 states and 50669 transitions. [2020-10-14 09:07:01,966 INFO L78 Accepts]: Start accepts. Automaton has 34367 states and 50669 transitions. Word has length 63 [2020-10-14 09:07:01,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:01,967 INFO L479 AbstractCegarLoop]: Abstraction has 34367 states and 50669 transitions. [2020-10-14 09:07:01,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:07:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 34367 states and 50669 transitions. [2020-10-14 09:07:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 09:07:01,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:01,973 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] [2020-10-14 09:07:01,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:07:01,973 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:01,974 INFO L82 PathProgramCache]: Analyzing trace with hash -276532689, now seen corresponding path program 1 times [2020-10-14 09:07:01,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:01,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111687688] [2020-10-14 09:07:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:01,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:07,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:07,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 09:07:07,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:07:07,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5477 [2020-10-14 09:07:07,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:07,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:07:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:07,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:07:07,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:07,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:07,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:07,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:07,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:07,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:07:07,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:07,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:07,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:07,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:07,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:07,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:07,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111687688] [2020-10-14 09:07:07,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:07,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:07:07,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437394472] [2020-10-14 09:07:07,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:07:07,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:07,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:07:07,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:07:07,609 INFO L87 Difference]: Start difference. First operand 34367 states and 50669 transitions. Second operand 6 states. [2020-10-14 09:07:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:09,815 INFO L93 Difference]: Finished difference Result 47756 states and 70459 transitions. [2020-10-14 09:07:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:07:09,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-14 09:07:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:09,844 INFO L225 Difference]: With dead ends: 47756 [2020-10-14 09:07:09,844 INFO L226 Difference]: Without dead ends: 20637 [2020-10-14 09:07:09,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:07:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20637 states. [2020-10-14 09:07:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20637 to 20561. [2020-10-14 09:07:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20561 states. [2020-10-14 09:07:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20561 states to 20561 states and 30072 transitions. [2020-10-14 09:07:11,412 INFO L78 Accepts]: Start accepts. Automaton has 20561 states and 30072 transitions. Word has length 64 [2020-10-14 09:07:11,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:11,413 INFO L479 AbstractCegarLoop]: Abstraction has 20561 states and 30072 transitions. [2020-10-14 09:07:11,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:07:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 20561 states and 30072 transitions. [2020-10-14 09:07:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 09:07:11,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:11,417 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] [2020-10-14 09:07:11,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:07:11,417 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:11,417 INFO L82 PathProgramCache]: Analyzing trace with hash -719306100, now seen corresponding path program 1 times [2020-10-14 09:07:11,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:11,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304997353] [2020-10-14 09:07:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:11,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:11,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:11,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:12,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:12,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:12,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:16,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:16,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:16,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 09:07:16,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:07:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:07:16,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:16,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:07:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 09:07:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:16,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:16,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:16,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:16,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:16,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:07:16,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:16,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:16,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304997353] [2020-10-14 09:07:16,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:16,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:07:16,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868638304] [2020-10-14 09:07:16,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:07:16,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:16,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:07:16,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:07:16,600 INFO L87 Difference]: Start difference. First operand 20561 states and 30072 transitions. Second operand 6 states. [2020-10-14 09:07:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:18,590 INFO L93 Difference]: Finished difference Result 33251 states and 48571 transitions. [2020-10-14 09:07:18,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:07:18,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-14 09:07:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:18,613 INFO L225 Difference]: With dead ends: 33251 [2020-10-14 09:07:18,613 INFO L226 Difference]: Without dead ends: 18016 [2020-10-14 09:07:18,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:07:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18016 states. [2020-10-14 09:07:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18016 to 11713. [2020-10-14 09:07:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11713 states. [2020-10-14 09:07:19,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11713 states to 11713 states and 17008 transitions. [2020-10-14 09:07:19,552 INFO L78 Accepts]: Start accepts. Automaton has 11713 states and 17008 transitions. Word has length 64 [2020-10-14 09:07:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:19,552 INFO L479 AbstractCegarLoop]: Abstraction has 11713 states and 17008 transitions. [2020-10-14 09:07:19,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:07:19,552 INFO L276 IsEmpty]: Start isEmpty. Operand 11713 states and 17008 transitions. [2020-10-14 09:07:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 09:07:19,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:19,555 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] [2020-10-14 09:07:19,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:07:19,555 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:19,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:19,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1650136244, now seen corresponding path program 1 times [2020-10-14 09:07:19,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:19,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485159973] [2020-10-14 09:07:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:19,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:19,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:20,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:20,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:20,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:21,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:21,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:24,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:24,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 09:07:24,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:07:24,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:07:24,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:24,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 09:07:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:24,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:07:24,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:07:24,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:24,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:24,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485159973] [2020-10-14 09:07:24,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:24,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:07:24,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641661762] [2020-10-14 09:07:24,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 09:07:24,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:24,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 09:07:24,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:07:24,878 INFO L87 Difference]: Start difference. First operand 11713 states and 17008 transitions. Second operand 11 states. [2020-10-14 09:07:25,031 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-14 09:07:29,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:29,964 INFO L93 Difference]: Finished difference Result 44952 states and 65373 transitions. [2020-10-14 09:07:29,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 09:07:29,965 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-14 09:07:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:30,004 INFO L225 Difference]: With dead ends: 44952 [2020-10-14 09:07:30,004 INFO L226 Difference]: Without dead ends: 34497 [2020-10-14 09:07:30,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-10-14 09:07:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34497 states. [2020-10-14 09:07:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34497 to 11610. [2020-10-14 09:07:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11610 states. [2020-10-14 09:07:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11610 states to 11610 states and 16853 transitions. [2020-10-14 09:07:31,201 INFO L78 Accepts]: Start accepts. Automaton has 11610 states and 16853 transitions. Word has length 65 [2020-10-14 09:07:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:31,201 INFO L479 AbstractCegarLoop]: Abstraction has 11610 states and 16853 transitions. [2020-10-14 09:07:31,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 09:07:31,202 INFO L276 IsEmpty]: Start isEmpty. Operand 11610 states and 16853 transitions. [2020-10-14 09:07:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 09:07:31,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:31,204 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] [2020-10-14 09:07:31,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:07:31,205 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash 623193098, now seen corresponding path program 1 times [2020-10-14 09:07:31,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:31,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818428894] [2020-10-14 09:07:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:31,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:31,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:33,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:34,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:34,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:34,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:34,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:36,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:36,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 09:07:36,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-14 09:07:36,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:07:36,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:36,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 09:07:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 09:07:36,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 09:07:36,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:36,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:36,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:36,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:36,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:07:36,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:36,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:36,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 09:07:36,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:36,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818428894] [2020-10-14 09:07:36,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:36,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:07:36,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400578132] [2020-10-14 09:07:36,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 09:07:36,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:36,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 09:07:36,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 09:07:36,508 INFO L87 Difference]: Start difference. First operand 11610 states and 16853 transitions. Second operand 11 states. [2020-10-14 09:07:36,672 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-14 09:07:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:39,682 INFO L93 Difference]: Finished difference Result 25318 states and 36812 transitions. [2020-10-14 09:07:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 09:07:39,682 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-14 09:07:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:39,700 INFO L225 Difference]: With dead ends: 25318 [2020-10-14 09:07:39,700 INFO L226 Difference]: Without dead ends: 14870 [2020-10-14 09:07:39,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-10-14 09:07:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14870 states. [2020-10-14 09:07:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14870 to 11424. [2020-10-14 09:07:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11424 states. [2020-10-14 09:07:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11424 states to 11424 states and 16564 transitions. [2020-10-14 09:07:40,892 INFO L78 Accepts]: Start accepts. Automaton has 11424 states and 16564 transitions. Word has length 65 [2020-10-14 09:07:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:40,892 INFO L479 AbstractCegarLoop]: Abstraction has 11424 states and 16564 transitions. [2020-10-14 09:07:40,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 09:07:40,892 INFO L276 IsEmpty]: Start isEmpty. Operand 11424 states and 16564 transitions. [2020-10-14 09:07:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 09:07:40,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:40,894 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] [2020-10-14 09:07:40,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:07:40,894 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:40,895 INFO L82 PathProgramCache]: Analyzing trace with hash 192609806, now seen corresponding path program 1 times [2020-10-14 09:07:40,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:40,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147641202] [2020-10-14 09:07:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:40,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:40,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:40,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:41,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:43,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:45,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 09:07:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 09:07:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:07:45,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:45,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:07:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:07:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:07:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:46,103 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 25 [2020-10-14 09:07:46,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:46,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:46,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:46,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:46,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:07:46,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:46,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:46,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147641202] [2020-10-14 09:07:46,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:46,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:07:46,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947949860] [2020-10-14 09:07:46,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:07:46,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:46,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:07:46,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:07:46,257 INFO L87 Difference]: Start difference. First operand 11424 states and 16564 transitions. Second operand 10 states. [2020-10-14 09:07:50,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:50,197 INFO L93 Difference]: Finished difference Result 24103 states and 34896 transitions. [2020-10-14 09:07:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 09:07:50,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-14 09:07:50,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:50,222 INFO L225 Difference]: With dead ends: 24103 [2020-10-14 09:07:50,222 INFO L226 Difference]: Without dead ends: 17941 [2020-10-14 09:07:50,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-14 09:07:50,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17941 states. [2020-10-14 09:07:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17941 to 11232. [2020-10-14 09:07:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11232 states. [2020-10-14 09:07:51,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11232 states to 11232 states and 16276 transitions. [2020-10-14 09:07:51,824 INFO L78 Accepts]: Start accepts. Automaton has 11232 states and 16276 transitions. Word has length 65 [2020-10-14 09:07:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:51,824 INFO L479 AbstractCegarLoop]: Abstraction has 11232 states and 16276 transitions. [2020-10-14 09:07:51,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:07:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 11232 states and 16276 transitions. [2020-10-14 09:07:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 09:07:51,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:51,826 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] [2020-10-14 09:07:51,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:07:51,827 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:51,827 INFO L82 PathProgramCache]: Analyzing trace with hash -947990221, now seen corresponding path program 1 times [2020-10-14 09:07:51,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:51,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484904420] [2020-10-14 09:07:51,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:51,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:51,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:52,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:54,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:54,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 09:07:54,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:07:54,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2603 [2020-10-14 09:07:54,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:54,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:54,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:54,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 09:07:54,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:07:54,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:54,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:54,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:54,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:54,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:54,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:07:54,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:54,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:54,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:54,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:54,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484904420] [2020-10-14 09:07:54,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:54,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:07:54,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948235764] [2020-10-14 09:07:54,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:07:54,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:54,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:07:54,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:54,566 INFO L87 Difference]: Start difference. First operand 11232 states and 16276 transitions. Second operand 4 states. [2020-10-14 09:07:56,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:07:56,753 INFO L93 Difference]: Finished difference Result 15426 states and 22277 transitions. [2020-10-14 09:07:56,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:07:56,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-14 09:07:56,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:07:56,767 INFO L225 Difference]: With dead ends: 15426 [2020-10-14 09:07:56,767 INFO L226 Difference]: Without dead ends: 11234 [2020-10-14 09:07:56,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11234 states. [2020-10-14 09:07:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 11232. [2020-10-14 09:07:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11232 states. [2020-10-14 09:07:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11232 states to 11232 states and 15968 transitions. [2020-10-14 09:07:58,217 INFO L78 Accepts]: Start accepts. Automaton has 11232 states and 15968 transitions. Word has length 66 [2020-10-14 09:07:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:07:58,217 INFO L479 AbstractCegarLoop]: Abstraction has 11232 states and 15968 transitions. [2020-10-14 09:07:58,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:07:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 11232 states and 15968 transitions. [2020-10-14 09:07:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:07:58,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:07:58,219 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] [2020-10-14 09:07:58,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:07:58,220 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:07:58,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:07:58,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1627684820, now seen corresponding path program 1 times [2020-10-14 09:07:58,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:07:58,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828903078] [2020-10-14 09:07:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:07:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:58,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:58,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:58,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:59,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:59,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:07:59,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:07:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1594 [2020-10-14 09:07:59,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:59,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:07:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:07:59,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:07:59,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:59,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:07:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:07:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:07:59,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:07:59,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:07:59,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:07:59,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:07:59,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:07:59,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:07:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:07:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:07:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:07:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:07:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:07:59,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828903078] [2020-10-14 09:07:59,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:07:59,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:07:59,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714651207] [2020-10-14 09:07:59,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:07:59,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:07:59,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:07:59,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:07:59,947 INFO L87 Difference]: Start difference. First operand 11232 states and 15968 transitions. Second operand 4 states. [2020-10-14 09:08:02,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:02,616 INFO L93 Difference]: Finished difference Result 20209 states and 28818 transitions. [2020-10-14 09:08:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:02,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 09:08:02,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:02,636 INFO L225 Difference]: With dead ends: 20209 [2020-10-14 09:08:02,637 INFO L226 Difference]: Without dead ends: 15801 [2020-10-14 09:08:02,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:02,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15801 states. [2020-10-14 09:08:04,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15801 to 12753. [2020-10-14 09:08:04,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12753 states. [2020-10-14 09:08:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12753 states to 12753 states and 18179 transitions. [2020-10-14 09:08:04,443 INFO L78 Accepts]: Start accepts. Automaton has 12753 states and 18179 transitions. Word has length 67 [2020-10-14 09:08:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:04,443 INFO L479 AbstractCegarLoop]: Abstraction has 12753 states and 18179 transitions. [2020-10-14 09:08:04,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 12753 states and 18179 transitions. [2020-10-14 09:08:04,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 09:08:04,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:04,446 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] [2020-10-14 09:08:04,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 09:08:04,446 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:04,446 INFO L82 PathProgramCache]: Analyzing trace with hash 2028674843, now seen corresponding path program 1 times [2020-10-14 09:08:04,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:04,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795829339] [2020-10-14 09:08:04,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:04,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:05,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:05,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:07,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:07,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 09:08:07,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:08:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3008 [2020-10-14 09:08:07,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:07,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 09:08:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:08:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 09:08:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:07,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:07,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:07,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:07,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:08:07,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:07,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:07,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:07,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795829339] [2020-10-14 09:08:07,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:07,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 09:08:07,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814735039] [2020-10-14 09:08:07,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 09:08:07,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:07,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 09:08:07,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:08:07,767 INFO L87 Difference]: Start difference. First operand 12753 states and 18179 transitions. Second operand 10 states. [2020-10-14 09:08:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:13,010 INFO L93 Difference]: Finished difference Result 30941 states and 43933 transitions. [2020-10-14 09:08:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 09:08:13,011 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-14 09:08:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:13,038 INFO L225 Difference]: With dead ends: 30941 [2020-10-14 09:08:13,039 INFO L226 Difference]: Without dead ends: 23782 [2020-10-14 09:08:13,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-14 09:08:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23782 states. [2020-10-14 09:08:15,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23782 to 12574. [2020-10-14 09:08:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12574 states. [2020-10-14 09:08:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12574 states to 12574 states and 17932 transitions. [2020-10-14 09:08:15,184 INFO L78 Accepts]: Start accepts. Automaton has 12574 states and 17932 transitions. Word has length 67 [2020-10-14 09:08:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:15,184 INFO L479 AbstractCegarLoop]: Abstraction has 12574 states and 17932 transitions. [2020-10-14 09:08:15,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 09:08:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 12574 states and 17932 transitions. [2020-10-14 09:08:15,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 09:08:15,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:15,186 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] [2020-10-14 09:08:15,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 09:08:15,186 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:15,187 INFO L82 PathProgramCache]: Analyzing trace with hash -683451666, now seen corresponding path program 1 times [2020-10-14 09:08:15,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:15,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407134217] [2020-10-14 09:08:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:15,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:15,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:15,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:15,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:16,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 09:08:16,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:08:16,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-10-14 09:08:16,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:16,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 09:08:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 09:08:16,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:16,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:16,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:16,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:08:16,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:16,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:16,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:16,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:16,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:16,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:16,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407134217] [2020-10-14 09:08:16,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:16,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:16,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40299425] [2020-10-14 09:08:16,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:16,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:16,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:16,389 INFO L87 Difference]: Start difference. First operand 12574 states and 17932 transitions. Second operand 4 states. [2020-10-14 09:08:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:20,894 INFO L93 Difference]: Finished difference Result 35006 states and 50040 transitions. [2020-10-14 09:08:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:20,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 09:08:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:20,926 INFO L225 Difference]: With dead ends: 35006 [2020-10-14 09:08:20,926 INFO L226 Difference]: Without dead ends: 23250 [2020-10-14 09:08:20,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23250 states. [2020-10-14 09:08:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23250 to 21768. [2020-10-14 09:08:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21768 states. [2020-10-14 09:08:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21768 states to 21768 states and 31152 transitions. [2020-10-14 09:08:24,577 INFO L78 Accepts]: Start accepts. Automaton has 21768 states and 31152 transitions. Word has length 69 [2020-10-14 09:08:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:24,577 INFO L479 AbstractCegarLoop]: Abstraction has 21768 states and 31152 transitions. [2020-10-14 09:08:24,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 21768 states and 31152 transitions. [2020-10-14 09:08:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 09:08:24,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:24,580 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] [2020-10-14 09:08:24,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 09:08:24,580 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:24,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:24,580 INFO L82 PathProgramCache]: Analyzing trace with hash -891142345, now seen corresponding path program 1 times [2020-10-14 09:08:24,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:24,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556980789] [2020-10-14 09:08:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:25,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 09:08:25,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 09:08:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 977 [2020-10-14 09:08:25,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:25,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 09:08:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 09:08:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:25,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:25,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:25,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:08:25,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:25,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:25,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:25,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:25,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:25,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556980789] [2020-10-14 09:08:25,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:25,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:25,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431961892] [2020-10-14 09:08:25,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:25,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:25,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:25,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:25,721 INFO L87 Difference]: Start difference. First operand 21768 states and 31152 transitions. Second operand 4 states. [2020-10-14 09:08:33,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:33,607 INFO L93 Difference]: Finished difference Result 61508 states and 87740 transitions. [2020-10-14 09:08:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:33,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 09:08:33,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:33,660 INFO L225 Difference]: With dead ends: 61508 [2020-10-14 09:08:33,660 INFO L226 Difference]: Without dead ends: 40558 [2020-10-14 09:08:33,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40558 states. [2020-10-14 09:08:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40558 to 37496. [2020-10-14 09:08:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37496 states. [2020-10-14 09:08:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37496 states to 37496 states and 53387 transitions. [2020-10-14 09:08:40,483 INFO L78 Accepts]: Start accepts. Automaton has 37496 states and 53387 transitions. Word has length 70 [2020-10-14 09:08:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:40,483 INFO L479 AbstractCegarLoop]: Abstraction has 37496 states and 53387 transitions. [2020-10-14 09:08:40,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 37496 states and 53387 transitions. [2020-10-14 09:08:40,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 09:08:40,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:40,485 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] [2020-10-14 09:08:40,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 09:08:40,486 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:40,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1424991331, now seen corresponding path program 1 times [2020-10-14 09:08:40,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:40,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821766720] [2020-10-14 09:08:40,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:40,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:40,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:41,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:41,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 09:08:41,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:08:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-14 09:08:41,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:41,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:08:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:08:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 09:08:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:41,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:41,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:41,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:08:41,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:41,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:41,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:41,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:41,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821766720] [2020-10-14 09:08:41,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:41,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:08:41,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078146663] [2020-10-14 09:08:41,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:08:41,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:41,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:08:41,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:08:41,292 INFO L87 Difference]: Start difference. First operand 37496 states and 53387 transitions. Second operand 6 states. [2020-10-14 09:08:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:48,252 INFO L93 Difference]: Finished difference Result 42361 states and 60031 transitions. [2020-10-14 09:08:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:08:48,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-14 09:08:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:48,289 INFO L225 Difference]: With dead ends: 42361 [2020-10-14 09:08:48,289 INFO L226 Difference]: Without dead ends: 31734 [2020-10-14 09:08:48,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:08:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31734 states. [2020-10-14 09:08:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31734 to 30649. [2020-10-14 09:08:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30649 states. [2020-10-14 09:08:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30649 states to 30649 states and 43582 transitions. [2020-10-14 09:08:54,085 INFO L78 Accepts]: Start accepts. Automaton has 30649 states and 43582 transitions. Word has length 71 [2020-10-14 09:08:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:54,085 INFO L479 AbstractCegarLoop]: Abstraction has 30649 states and 43582 transitions. [2020-10-14 09:08:54,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:08:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 30649 states and 43582 transitions. [2020-10-14 09:08:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 09:08:54,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:54,088 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] [2020-10-14 09:08:54,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 09:08:54,088 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:54,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:54,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1271001408, now seen corresponding path program 1 times [2020-10-14 09:08:54,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:54,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399514975] [2020-10-14 09:08:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:55,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:55,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 09:08:55,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:08:55,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-10-14 09:08:55,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:55,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:08:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 09:08:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 09:08:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:55,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:55,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:55,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:55,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:55,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:08:55,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:55,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:55,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:55,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399514975] [2020-10-14 09:08:55,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:55,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:08:55,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797151116] [2020-10-14 09:08:55,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:08:55,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:55,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:08:55,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:08:55,325 INFO L87 Difference]: Start difference. First operand 30649 states and 43582 transitions. Second operand 6 states.