/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.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:43:42,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:43:42,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:43:42,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:43:42,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:43:42,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:43:42,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:43:42,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:43:42,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:43:42,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:43:42,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:43:42,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:43:42,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:43:42,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:43:42,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:43:42,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:43:42,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:43:42,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:43:42,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:43:42,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:43:42,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:43:42,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:43:42,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:43:42,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:43:42,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:43:42,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:43:42,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:43:42,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:43:42,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:43:42,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:43:42,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:43:42,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:43:42,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:43:42,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:43:42,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:43:42,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:43:42,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:43:42,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:43:42,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:43:42,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:43:42,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:43:42,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:43:42,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:43:42,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:43:42,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:43:42,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:43:42,989 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:43:42,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:43:42,989 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:43:42,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:43:42,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:43:42,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:43:42,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:43:42,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:43:42,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:43:42,991 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:43:42,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:43:42,991 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:43:42,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:43:42,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:43:42,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:43:42,992 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:43:42,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:43:42,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:43:42,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:43:42,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:43:42,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:43:42,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:43:42,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:43:42,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:43:42,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:43:42,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:43:43,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:43:43,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:43:43,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:43:43,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:43:43,335 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:43:43,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-14 08:43:43,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/490de7ba6/fa956786998e48d084e7bbc81d06e669/FLAGf41bec11c [2020-10-14 08:43:43,897 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:43:43,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-14 08:43:43,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/490de7ba6/fa956786998e48d084e7bbc81d06e669/FLAGf41bec11c [2020-10-14 08:43:44,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/490de7ba6/fa956786998e48d084e7bbc81d06e669 [2020-10-14 08:43:44,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:43:44,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:43:44,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:43:44,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:43:44,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:43:44,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:43:44" (1/1) ... [2020-10-14 08:43:44,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718a428c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44, skipping insertion in model container [2020-10-14 08:43:44,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:43:44" (1/1) ... [2020-10-14 08:43:44,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:43:44,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:43:44,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:43:44,521 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:43:44,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:43:44,735 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:43:44,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44 WrapperNode [2020-10-14 08:43:44,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:43:44,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:43:44,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:43:44,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:43:44,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44" (1/1) ... [2020-10-14 08:43:44,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44" (1/1) ... [2020-10-14 08:43:44,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44" (1/1) ... [2020-10-14 08:43:44,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44" (1/1) ... [2020-10-14 08:43:44,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44" (1/1) ... [2020-10-14 08:43:44,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44" (1/1) ... [2020-10-14 08:43:44,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44" (1/1) ... [2020-10-14 08:43:44,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:43:44,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:43:44,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:43:44,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:43:44,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:43:44,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:43:44,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:43:44,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:43:44,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:43:44,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:43:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:43:44,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:43:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:43:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:43:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:43:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:43:44,856 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:43:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:43:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:43:44,857 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:43:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:43:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:43:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:43:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:43:44,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:43:44,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:43:45,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:43:45,409 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:43:45,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:43:45 BoogieIcfgContainer [2020-10-14 08:43:45,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:43:45,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:43:45,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:43:45,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:43:45,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:43:44" (1/3) ... [2020-10-14 08:43:45,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64347b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:43:45, skipping insertion in model container [2020-10-14 08:43:45,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:43:44" (2/3) ... [2020-10-14 08:43:45,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64347b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:43:45, skipping insertion in model container [2020-10-14 08:43:45,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:43:45" (3/3) ... [2020-10-14 08:43:45,427 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-14 08:43:45,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:43:45,455 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:43:45,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:43:45,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:43:45,497 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:43:45,497 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:43:45,498 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:43:45,498 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:43:45,498 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:43:45,498 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:43:45,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:43:45,519 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2020-10-14 08:43:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 08:43:45,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:45,529 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] [2020-10-14 08:43:45,530 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:45,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:45,536 INFO L82 PathProgramCache]: Analyzing trace with hash 542345027, now seen corresponding path program 1 times [2020-10-14 08:43:45,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:45,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181911589] [2020-10-14 08:43:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:45,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:46,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:48,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:48,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 08:43:48,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:43:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2901 [2020-10-14 08:43:48,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:48,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 08:43:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:43:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:43:49,065 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:43:49,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:49,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:49,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:49,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:49,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:43:49,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:49,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:49,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:49,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:49,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181911589] [2020-10-14 08:43:49,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:49,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:43:49,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141729789] [2020-10-14 08:43:49,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:43:49,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:49,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:43:49,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:49,160 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 4 states. [2020-10-14 08:43:49,347 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 08:43:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:49,880 INFO L93 Difference]: Finished difference Result 184 states and 293 transitions. [2020-10-14 08:43:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:43:49,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-14 08:43:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:49,895 INFO L225 Difference]: With dead ends: 184 [2020-10-14 08:43:49,896 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 08:43:49,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:43:49,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 08:43:49,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2020-10-14 08:43:49,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-14 08:43:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 173 transitions. [2020-10-14 08:43:49,959 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 173 transitions. Word has length 51 [2020-10-14 08:43:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:49,960 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 173 transitions. [2020-10-14 08:43:49,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:43:49,960 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 173 transitions. [2020-10-14 08:43:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 08:43:49,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:49,962 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 08:43:49,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:43:49,963 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:49,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2107395660, now seen corresponding path program 1 times [2020-10-14 08:43:49,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:49,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825020508] [2020-10-14 08:43:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:51,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 08:43:51,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:43:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1201 [2020-10-14 08:43:51,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:51,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 08:43:51,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:43:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:43:51,464 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:43:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:51,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:51,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:51,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:51,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:43:51,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:51,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:51,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:51,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:51,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:43:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:51,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825020508] [2020-10-14 08:43:51,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:51,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:43:51,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051886855] [2020-10-14 08:43:51,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:43:51,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:51,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:43:51,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:51,525 INFO L87 Difference]: Start difference. First operand 120 states and 173 transitions. Second operand 4 states. [2020-10-14 08:43:51,739 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 08:43:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:52,182 INFO L93 Difference]: Finished difference Result 284 states and 433 transitions. [2020-10-14 08:43:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:43:52,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-14 08:43:52,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:52,186 INFO L225 Difference]: With dead ends: 284 [2020-10-14 08:43:52,187 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 08:43:52,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:43:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 08:43:52,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2020-10-14 08:43:52,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-14 08:43:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 287 transitions. [2020-10-14 08:43:52,239 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 287 transitions. Word has length 52 [2020-10-14 08:43:52,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:52,240 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 287 transitions. [2020-10-14 08:43:52,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:43:52,240 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 287 transitions. [2020-10-14 08:43:52,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 08:43:52,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:52,244 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] [2020-10-14 08:43:52,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:43:52,245 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:52,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:52,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1400601833, now seen corresponding path program 1 times [2020-10-14 08:43:52,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:52,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125011382] [2020-10-14 08:43:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:52,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:54,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:54,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 08:43:54,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:43:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2202 [2020-10-14 08:43:54,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:54,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:43:54,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:43:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:54,685 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:43:54,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:54,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:54,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:54,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:43:54,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:54,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:54,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125011382] [2020-10-14 08:43:54,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:54,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:43:54,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919631912] [2020-10-14 08:43:54,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:43:54,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:54,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:43:54,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:54,720 INFO L87 Difference]: Start difference. First operand 192 states and 287 transitions. Second operand 4 states. [2020-10-14 08:43:54,869 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 08:43:55,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:55,443 INFO L93 Difference]: Finished difference Result 484 states and 749 transitions. [2020-10-14 08:43:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:43:55,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 08:43:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:55,453 INFO L225 Difference]: With dead ends: 484 [2020-10-14 08:43:55,454 INFO L226 Difference]: Without dead ends: 322 [2020-10-14 08:43:55,458 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 08:43:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-14 08:43:55,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-10-14 08:43:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-10-14 08:43:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 487 transitions. [2020-10-14 08:43:55,484 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 487 transitions. Word has length 53 [2020-10-14 08:43:55,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:55,484 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 487 transitions. [2020-10-14 08:43:55,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:43:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 487 transitions. [2020-10-14 08:43:55,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 08:43:55,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:55,486 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] [2020-10-14 08:43:55,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:43:55,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:55,487 INFO L82 PathProgramCache]: Analyzing trace with hash -92731974, now seen corresponding path program 1 times [2020-10-14 08:43:55,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:55,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115721155] [2020-10-14 08:43:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:55,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:55,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:55,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:56,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:56,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 08:43:56,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 08:43:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-10-14 08:43:56,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:56,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:56,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:43:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:43:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:56,813 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:43:56,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:56,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:56,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:56,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:56,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:56,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 08:43:56,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:56,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:56,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:56,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:56,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:56,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:56,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115721155] [2020-10-14 08:43:56,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:56,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:43:56,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908091948] [2020-10-14 08:43:56,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:43:56,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:56,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:43:56,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:56,844 INFO L87 Difference]: Start difference. First operand 320 states and 487 transitions. Second operand 4 states. [2020-10-14 08:43:56,979 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-14 08:43:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:57,315 INFO L93 Difference]: Finished difference Result 836 states and 1297 transitions. [2020-10-14 08:43:57,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:43:57,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-14 08:43:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:57,319 INFO L225 Difference]: With dead ends: 836 [2020-10-14 08:43:57,320 INFO L226 Difference]: Without dead ends: 546 [2020-10-14 08:43:57,322 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 08:43:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-10-14 08:43:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 544. [2020-10-14 08:43:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-14 08:43:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 831 transitions. [2020-10-14 08:43:57,354 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 831 transitions. Word has length 54 [2020-10-14 08:43:57,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:57,354 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 831 transitions. [2020-10-14 08:43:57,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:43:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 831 transitions. [2020-10-14 08:43:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:43:57,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:57,356 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 08:43:57,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:43:57,356 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:57,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1377694483, now seen corresponding path program 1 times [2020-10-14 08:43:57,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:57,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656235487] [2020-10-14 08:43:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:57,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:57,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:01,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:01,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:44:01,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:44:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3814 [2020-10-14 08:44:01,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:01,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:44:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:44:01,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 08:44:01,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:01,379 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:44:01,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:01,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:01,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:01,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:44:01,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:01,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:44:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:01,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656235487] [2020-10-14 08:44:01,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:01,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:44:01,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290175016] [2020-10-14 08:44:01,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:44:01,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:01,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:44:01,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:44:01,416 INFO L87 Difference]: Start difference. First operand 544 states and 831 transitions. Second operand 6 states. [2020-10-14 08:44:01,622 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:44:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:02,112 INFO L93 Difference]: Finished difference Result 1564 states and 2417 transitions. [2020-10-14 08:44:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:44:02,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-14 08:44:02,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:02,118 INFO L225 Difference]: With dead ends: 1564 [2020-10-14 08:44:02,119 INFO L226 Difference]: Without dead ends: 1050 [2020-10-14 08:44:02,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:44:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-10-14 08:44:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1048. [2020-10-14 08:44:02,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2020-10-14 08:44:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1607 transitions. [2020-10-14 08:44:02,185 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1607 transitions. Word has length 55 [2020-10-14 08:44:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:02,186 INFO L479 AbstractCegarLoop]: Abstraction has 1048 states and 1607 transitions. [2020-10-14 08:44:02,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:44:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1607 transitions. [2020-10-14 08:44:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 08:44:02,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:02,187 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 08:44:02,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:44:02,188 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1643404808, now seen corresponding path program 1 times [2020-10-14 08:44:02,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:02,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279398332] [2020-10-14 08:44:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:02,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:02,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 08:44:02,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 08:44:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-14 08:44:02,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:02,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:44:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:44:02,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 08:44:02,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:03,084 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:44:03,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:03,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:03,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:03,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:03,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:44:03,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:03,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:03,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:03,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:03,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279398332] [2020-10-14 08:44:03,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:03,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:44:03,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800842204] [2020-10-14 08:44:03,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:44:03,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:03,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:44:03,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:44:03,114 INFO L87 Difference]: Start difference. First operand 1048 states and 1607 transitions. Second operand 7 states. [2020-10-14 08:44:03,302 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:44:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:04,294 INFO L93 Difference]: Finished difference Result 9192 states and 14223 transitions. [2020-10-14 08:44:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:44:04,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-14 08:44:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:04,337 INFO L225 Difference]: With dead ends: 9192 [2020-10-14 08:44:04,337 INFO L226 Difference]: Without dead ends: 8174 [2020-10-14 08:44:04,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:44:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2020-10-14 08:44:04,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 2064. [2020-10-14 08:44:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2064 states. [2020-10-14 08:44:04,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 3119 transitions. [2020-10-14 08:44:04,590 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 3119 transitions. Word has length 55 [2020-10-14 08:44:04,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:04,591 INFO L479 AbstractCegarLoop]: Abstraction has 2064 states and 3119 transitions. [2020-10-14 08:44:04,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:44:04,591 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 3119 transitions. [2020-10-14 08:44:04,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 08:44:04,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:04,592 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 08:44:04,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:44:04,592 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:04,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:04,593 INFO L82 PathProgramCache]: Analyzing trace with hash 362801010, now seen corresponding path program 1 times [2020-10-14 08:44:04,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:04,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942529438] [2020-10-14 08:44:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:04,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:05,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 08:44:05,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 08:44:05,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-14 08:44:05,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:05,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:44:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:44:05,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 08:44:05,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:05,597 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:44:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:05,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:05,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:05,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:44:05,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:05,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:05,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942529438] [2020-10-14 08:44:05,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:05,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:44:05,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080486658] [2020-10-14 08:44:05,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:44:05,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:05,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:44:05,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:44:05,627 INFO L87 Difference]: Start difference. First operand 2064 states and 3119 transitions. Second operand 7 states. [2020-10-14 08:44:05,829 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:44:07,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:07,011 INFO L93 Difference]: Finished difference Result 10208 states and 15479 transitions. [2020-10-14 08:44:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:44:07,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-10-14 08:44:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:07,053 INFO L225 Difference]: With dead ends: 10208 [2020-10-14 08:44:07,054 INFO L226 Difference]: Without dead ends: 8174 [2020-10-14 08:44:07,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:44:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2020-10-14 08:44:07,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 2064. [2020-10-14 08:44:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2064 states. [2020-10-14 08:44:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 3087 transitions. [2020-10-14 08:44:07,371 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 3087 transitions. Word has length 57 [2020-10-14 08:44:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:07,372 INFO L479 AbstractCegarLoop]: Abstraction has 2064 states and 3087 transitions. [2020-10-14 08:44:07,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:44:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 3087 transitions. [2020-10-14 08:44:07,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 08:44:07,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:07,376 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 08:44:07,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:44:07,376 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:07,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash 342751667, now seen corresponding path program 1 times [2020-10-14 08:44:07,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:07,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706289426] [2020-10-14 08:44:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:07,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:07,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:07,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:07,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 08:44:07,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:44:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-14 08:44:07,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:07,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:44:07,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:44:07,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:08,067 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:44:08,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:08,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:08,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:08,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:08,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:08,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:44:08,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:08,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:08,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:08,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:08,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:08,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706289426] [2020-10-14 08:44:08,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:08,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:44:08,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091655397] [2020-10-14 08:44:08,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:44:08,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:08,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:44:08,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:44:08,099 INFO L87 Difference]: Start difference. First operand 2064 states and 3087 transitions. Second operand 4 states. [2020-10-14 08:44:08,224 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-14 08:44:08,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:08,743 INFO L93 Difference]: Finished difference Result 5070 states and 7595 transitions. [2020-10-14 08:44:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:44:08,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 08:44:08,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:08,759 INFO L225 Difference]: With dead ends: 5070 [2020-10-14 08:44:08,759 INFO L226 Difference]: Without dead ends: 3036 [2020-10-14 08:44:08,764 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 08:44:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2020-10-14 08:44:09,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 3034. [2020-10-14 08:44:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3034 states. [2020-10-14 08:44:09,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4489 transitions. [2020-10-14 08:44:09,036 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4489 transitions. Word has length 57 [2020-10-14 08:44:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:09,037 INFO L479 AbstractCegarLoop]: Abstraction has 3034 states and 4489 transitions. [2020-10-14 08:44:09,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:44:09,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4489 transitions. [2020-10-14 08:44:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:44:09,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:09,038 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] [2020-10-14 08:44:09,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:44:09,038 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1639979964, now seen corresponding path program 1 times [2020-10-14 08:44:09,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:09,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272827900] [2020-10-14 08:44:09,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:09,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:09,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:09,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:44:09,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 08:44:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 08:44:09,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:09,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:44:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:44:09,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 08:44:09,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:09,544 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:44:09,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:09,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:09,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:09,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:09,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:44:09,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:09,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:44:09,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:09,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:09,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272827900] [2020-10-14 08:44:09,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:09,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:44:09,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737199298] [2020-10-14 08:44:09,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:44:09,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:09,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:44:09,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:44:09,580 INFO L87 Difference]: Start difference. First operand 3034 states and 4489 transitions. Second operand 6 states. [2020-10-14 08:44:10,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:10,205 INFO L93 Difference]: Finished difference Result 6036 states and 8946 transitions. [2020-10-14 08:44:10,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:44:10,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-14 08:44:10,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:10,220 INFO L225 Difference]: With dead ends: 6036 [2020-10-14 08:44:10,220 INFO L226 Difference]: Without dead ends: 3034 [2020-10-14 08:44:10,226 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 08:44:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2020-10-14 08:44:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 3034. [2020-10-14 08:44:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3034 states. [2020-10-14 08:44:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4441 transitions. [2020-10-14 08:44:10,546 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4441 transitions. Word has length 58 [2020-10-14 08:44:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:10,547 INFO L479 AbstractCegarLoop]: Abstraction has 3034 states and 4441 transitions. [2020-10-14 08:44:10,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:44:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4441 transitions. [2020-10-14 08:44:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 08:44:10,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:10,548 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] [2020-10-14 08:44:10,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:44:10,548 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:10,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1511894657, now seen corresponding path program 1 times [2020-10-14 08:44:10,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:10,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407695916] [2020-10-14 08:44:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:10,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:10,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:10,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 08:44:10,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:10,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 08:44:10,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:10,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:10,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:44:10,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 08:44:10,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:44:10,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:10,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:10,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:10,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:10,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:44:10,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:10,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:10,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:10,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407695916] [2020-10-14 08:44:10,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:10,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:44:10,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134706076] [2020-10-14 08:44:10,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:44:10,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:10,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:44:10,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:44:10,847 INFO L87 Difference]: Start difference. First operand 3034 states and 4441 transitions. Second operand 5 states. [2020-10-14 08:44:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:11,626 INFO L93 Difference]: Finished difference Result 5455 states and 7941 transitions. [2020-10-14 08:44:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:44:11,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-14 08:44:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:11,642 INFO L225 Difference]: With dead ends: 5455 [2020-10-14 08:44:11,643 INFO L226 Difference]: Without dead ends: 5453 [2020-10-14 08:44:11,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:44:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2020-10-14 08:44:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 3162. [2020-10-14 08:44:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3162 states. [2020-10-14 08:44:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 4553 transitions. [2020-10-14 08:44:11,995 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 4553 transitions. Word has length 58 [2020-10-14 08:44:11,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:11,995 INFO L479 AbstractCegarLoop]: Abstraction has 3162 states and 4553 transitions. [2020-10-14 08:44:11,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:44:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 4553 transitions. [2020-10-14 08:44:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:44:11,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:11,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:44:11,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:44:11,998 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:11,998 INFO L82 PathProgramCache]: Analyzing trace with hash -96970718, now seen corresponding path program 1 times [2020-10-14 08:44:11,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:11,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385718447] [2020-10-14 08:44:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:12,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:13,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:15,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:16,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:17,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:17,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:44:17,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:44:17,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:44:17,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:17,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:44:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:44:17,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 08:44:17,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:17,185 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:44:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:17,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:17,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:17,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:17,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:44:17,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:17,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:17,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385718447] [2020-10-14 08:44:17,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:44:17,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:44:17,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367036202] [2020-10-14 08:44:17,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:44:17,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:17,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:44:17,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:44:17,229 INFO L87 Difference]: Start difference. First operand 3162 states and 4553 transitions. Second operand 6 states. [2020-10-14 08:44:17,381 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-14 08:44:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:18,490 INFO L93 Difference]: Finished difference Result 8734 states and 12688 transitions. [2020-10-14 08:44:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:44:18,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-14 08:44:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:18,511 INFO L225 Difference]: With dead ends: 8734 [2020-10-14 08:44:18,511 INFO L226 Difference]: Without dead ends: 5604 [2020-10-14 08:44:18,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 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 08:44:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2020-10-14 08:44:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5574. [2020-10-14 08:44:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5574 states. [2020-10-14 08:44:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 8053 transitions. [2020-10-14 08:44:19,275 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 8053 transitions. Word has length 80 [2020-10-14 08:44:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:19,276 INFO L479 AbstractCegarLoop]: Abstraction has 5574 states and 8053 transitions. [2020-10-14 08:44:19,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:44:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 8053 transitions. [2020-10-14 08:44:19,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:44:19,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:19,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:44:19,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:44:19,279 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2107054290, now seen corresponding path program 1 times [2020-10-14 08:44:19,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:19,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389171786] [2020-10-14 08:44:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:19,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:20,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:21,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:24,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:24,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:44:24,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:44:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:44:24,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:24,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:24,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:44:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:44:24,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 08:44:24,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:24,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:24,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:24,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:24,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:44:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:24,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:24,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 08:44:24,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389171786] [2020-10-14 08:44:24,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:44:24,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 08:44:24,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181912991] [2020-10-14 08:44:24,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:44:24,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:24,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:44:24,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:44:24,500 INFO L87 Difference]: Start difference. First operand 5574 states and 8053 transitions. Second operand 7 states. [2020-10-14 08:44:24,675 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:44:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:26,580 INFO L93 Difference]: Finished difference Result 25570 states and 36964 transitions. [2020-10-14 08:44:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:44:26,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-14 08:44:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:26,626 INFO L225 Difference]: With dead ends: 25570 [2020-10-14 08:44:26,627 INFO L226 Difference]: Without dead ends: 20028 [2020-10-14 08:44:26,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:44:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20028 states. [2020-10-14 08:44:27,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20028 to 9782. [2020-10-14 08:44:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9782 states. [2020-10-14 08:44:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9782 states to 9782 states and 14117 transitions. [2020-10-14 08:44:27,766 INFO L78 Accepts]: Start accepts. Automaton has 9782 states and 14117 transitions. Word has length 80 [2020-10-14 08:44:27,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:27,767 INFO L479 AbstractCegarLoop]: Abstraction has 9782 states and 14117 transitions. [2020-10-14 08:44:27,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:44:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand 9782 states and 14117 transitions. [2020-10-14 08:44:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:44:27,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:27,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:44:27,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:44:27,770 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:27,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:27,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2083309068, now seen corresponding path program 1 times [2020-10-14 08:44:27,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:27,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004200474] [2020-10-14 08:44:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:27,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:27,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:27,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:28,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:32,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:32,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:44:32,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:44:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:44:32,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:32,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:44:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:44:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 08:44:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:32,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:32,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:32,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:32,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:32,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:44:32,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:32,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:32,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:32,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 08:44:32,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004200474] [2020-10-14 08:44:32,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:44:32,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 08:44:32,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236952312] [2020-10-14 08:44:32,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:44:32,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:32,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:44:32,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:44:32,972 INFO L87 Difference]: Start difference. First operand 9782 states and 14117 transitions. Second operand 7 states. [2020-10-14 08:44:33,131 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:44:35,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:35,085 INFO L93 Difference]: Finished difference Result 31398 states and 45266 transitions. [2020-10-14 08:44:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:44:35,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-14 08:44:35,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:35,152 INFO L225 Difference]: With dead ends: 31398 [2020-10-14 08:44:35,152 INFO L226 Difference]: Without dead ends: 25856 [2020-10-14 08:44:35,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:44:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25856 states. [2020-10-14 08:44:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25856 to 15562. [2020-10-14 08:44:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15562 states. [2020-10-14 08:44:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15562 states to 15562 states and 22377 transitions. [2020-10-14 08:44:36,803 INFO L78 Accepts]: Start accepts. Automaton has 15562 states and 22377 transitions. Word has length 80 [2020-10-14 08:44:36,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:36,804 INFO L479 AbstractCegarLoop]: Abstraction has 15562 states and 22377 transitions. [2020-10-14 08:44:36,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:44:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 15562 states and 22377 transitions. [2020-10-14 08:44:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 08:44:36,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:36,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:44:36,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:44:36,807 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:36,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1815387112, now seen corresponding path program 1 times [2020-10-14 08:44:36,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:36,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445372105] [2020-10-14 08:44:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:36,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:36,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:37,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:37,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:37,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:37,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:38,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:40,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:42,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:42,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 08:44:42,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:44:42,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5248 [2020-10-14 08:44:42,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:42,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:42,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:44:42,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:44:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 08:44:42,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:42,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:42,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:42,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:42,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:44:42,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:42,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:42,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:42,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 08:44:42,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445372105] [2020-10-14 08:44:42,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:44:42,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 08:44:42,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827339114] [2020-10-14 08:44:42,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:44:42,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:42,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:44:42,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:44:42,256 INFO L87 Difference]: Start difference. First operand 15562 states and 22377 transitions. Second operand 7 states. [2020-10-14 08:44:42,397 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:44:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:44,802 INFO L93 Difference]: Finished difference Result 35984 states and 51846 transitions. [2020-10-14 08:44:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:44:44,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-14 08:44:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:44,867 INFO L225 Difference]: With dead ends: 35984 [2020-10-14 08:44:44,867 INFO L226 Difference]: Without dead ends: 30442 [2020-10-14 08:44:44,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:44:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30442 states. [2020-10-14 08:44:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30442 to 19770. [2020-10-14 08:44:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19770 states. [2020-10-14 08:44:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19770 states to 19770 states and 28441 transitions. [2020-10-14 08:44:46,820 INFO L78 Accepts]: Start accepts. Automaton has 19770 states and 28441 transitions. Word has length 80 [2020-10-14 08:44:46,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:46,820 INFO L479 AbstractCegarLoop]: Abstraction has 19770 states and 28441 transitions. [2020-10-14 08:44:46,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:44:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 19770 states and 28441 transitions. [2020-10-14 08:44:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 08:44:46,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:46,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:44:46,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:44:46,824 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:46,825 INFO L82 PathProgramCache]: Analyzing trace with hash -378364555, now seen corresponding path program 1 times [2020-10-14 08:44:46,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:46,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390080310] [2020-10-14 08:44:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:46,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:46,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:47,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:47,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:47,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:47,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:51,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:51,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 08:44:51,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:44:51,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:44:51,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:51,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:51,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:44:51,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:44:51,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 08:44:51,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:51,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:51,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:51,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:51,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:51,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:44:51,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:51,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:51,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:51,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 08:44:52,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390080310] [2020-10-14 08:44:52,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:44:52,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 08:44:52,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351467448] [2020-10-14 08:44:52,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:44:52,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:52,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:44:52,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:44:52,024 INFO L87 Difference]: Start difference. First operand 19770 states and 28441 transitions. Second operand 5 states. [2020-10-14 08:44:52,146 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:44:54,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:54,545 INFO L93 Difference]: Finished difference Result 45224 states and 65332 transitions. [2020-10-14 08:44:54,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:44:54,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-14 08:44:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:54,615 INFO L225 Difference]: With dead ends: 45224 [2020-10-14 08:44:54,615 INFO L226 Difference]: Without dead ends: 30294 [2020-10-14 08:44:54,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:44:54,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30294 states. [2020-10-14 08:44:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30294 to 30290. [2020-10-14 08:44:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30290 states. [2020-10-14 08:44:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30290 states to 30290 states and 43169 transitions. [2020-10-14 08:44:57,080 INFO L78 Accepts]: Start accepts. Automaton has 30290 states and 43169 transitions. Word has length 81 [2020-10-14 08:44:57,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:57,080 INFO L479 AbstractCegarLoop]: Abstraction has 30290 states and 43169 transitions. [2020-10-14 08:44:57,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:44:57,080 INFO L276 IsEmpty]: Start isEmpty. Operand 30290 states and 43169 transitions. [2020-10-14 08:44:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 08:44:57,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:57,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:44:57,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:44:57,083 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:57,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:57,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1825858259, now seen corresponding path program 1 times [2020-10-14 08:44:57,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:57,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55632838] [2020-10-14 08:44:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:57,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:57,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:57,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:57,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:57,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:58,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:59,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:02,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:02,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 08:45:02,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:45:02,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:45:02,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:02,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:02,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:45:02,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:45:02,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 08:45:02,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:02,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:02,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:02,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:02,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:02,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:45:02,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:02,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:02,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:02,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:45:02,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:02,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:02,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55632838] [2020-10-14 08:45:02,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:45:02,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 08:45:02,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354327] [2020-10-14 08:45:02,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:45:02,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:02,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:45:02,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:45:02,401 INFO L87 Difference]: Start difference. First operand 30290 states and 43169 transitions. Second operand 11 states. [2020-10-14 08:45:02,581 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:45:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:20,076 INFO L93 Difference]: Finished difference Result 203268 states and 286083 transitions. [2020-10-14 08:45:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 08:45:20,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-10-14 08:45:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:20,359 INFO L225 Difference]: With dead ends: 203268 [2020-10-14 08:45:20,359 INFO L226 Difference]: Without dead ends: 173010 [2020-10-14 08:45:20,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 08:45:20,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173010 states. [2020-10-14 08:45:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173010 to 68076. [2020-10-14 08:45:27,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68076 states. [2020-10-14 08:45:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68076 states to 68076 states and 95327 transitions. [2020-10-14 08:45:27,703 INFO L78 Accepts]: Start accepts. Automaton has 68076 states and 95327 transitions. Word has length 82 [2020-10-14 08:45:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:27,704 INFO L479 AbstractCegarLoop]: Abstraction has 68076 states and 95327 transitions. [2020-10-14 08:45:27,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:45:27,704 INFO L276 IsEmpty]: Start isEmpty. Operand 68076 states and 95327 transitions. [2020-10-14 08:45:27,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 08:45:27,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:27,707 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:45:27,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:45:27,708 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:27,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2096583143, now seen corresponding path program 1 times [2020-10-14 08:45:27,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:27,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726973938] [2020-10-14 08:45:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:27,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:29,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:29,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:31,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:31,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:31,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:32,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 08:45:32,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:45:32,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 08:45:32,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:32,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:32,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:45:32,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:45:32,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 08:45:32,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:32,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:45:32,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:32,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:45:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:33,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726973938] [2020-10-14 08:45:33,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:45:33,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 08:45:33,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234149523] [2020-10-14 08:45:33,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:45:33,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:33,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:45:33,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:45:33,021 INFO L87 Difference]: Start difference. First operand 68076 states and 95327 transitions. Second operand 11 states. [2020-10-14 08:45:33,186 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-14 08:46:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:19,730 INFO L93 Difference]: Finished difference Result 498759 states and 689044 transitions. [2020-10-14 08:46:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 08:46:19,731 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-10-14 08:46:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:20,433 INFO L225 Difference]: With dead ends: 498759 [2020-10-14 08:46:20,433 INFO L226 Difference]: Without dead ends: 430715 [2020-10-14 08:46:20,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=396, Invalid=1164, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 08:46:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430715 states. [2020-10-14 08:46:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430715 to 163545. [2020-10-14 08:46:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163545 states. [2020-10-14 08:46:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163545 states to 163545 states and 226618 transitions. [2020-10-14 08:46:43,309 INFO L78 Accepts]: Start accepts. Automaton has 163545 states and 226618 transitions. Word has length 82 [2020-10-14 08:46:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:43,310 INFO L479 AbstractCegarLoop]: Abstraction has 163545 states and 226618 transitions. [2020-10-14 08:46:43,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:46:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 163545 states and 226618 transitions. [2020-10-14 08:46:43,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-14 08:46:43,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:43,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:43,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:46:43,318 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:43,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:43,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2022726201, now seen corresponding path program 1 times [2020-10-14 08:46:43,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:43,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438664656] [2020-10-14 08:46:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:43,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:43,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:49,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:49,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 08:46:49,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:46:49,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5670 [2020-10-14 08:46:49,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:49,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:49,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:46:49,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:49,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 08:46:49,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:49,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:49,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:49,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:46:49,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:49,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:49,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:49,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438664656] [2020-10-14 08:46:49,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:46:49,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 08:46:49,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114744260] [2020-10-14 08:46:49,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:46:49,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:49,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:46:49,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:46:49,308 INFO L87 Difference]: Start difference. First operand 163545 states and 226618 transitions. Second operand 11 states. [2020-10-14 08:46:49,479 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 122