/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 SingleStatement --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:33:28,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:33:28,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:33:28,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:33:28,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:33:28,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:33:28,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:33:28,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:33:28,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:33:28,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:33:28,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:33:28,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:33:28,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:33:28,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:33:28,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:33:28,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:33:28,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:33:28,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:33:28,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:33:28,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:33:28,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:33:28,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:33:28,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:33:28,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:33:28,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:33:28,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:33:28,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:33:28,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:33:28,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:33:28,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:33:28,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:33:28,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:33:28,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:33:28,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:33:28,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:33:28,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:33:28,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:33:28,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:33:28,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:33:28,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:33:28,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:33:28,373 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 [2020-09-24 23:33:28,416 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:33:28,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:33:28,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:33:28,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:33:28,419 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:33:28,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:33:28,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:33:28,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:33:28,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:33:28,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:33:28,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:33:28,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:33:28,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:33:28,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:33:28,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:33:28,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:33:28,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:33:28,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:33:28,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:33:28,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:33:28,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:33:28,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:33:28,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:33:28,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:33:28,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:33:28,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:33:28,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:33:28,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:33:28,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:33:28,426 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 -> SingleStatement 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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:33:28,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:33:28,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:33:28,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:33:28,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:33:28,941 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:33:28,942 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-09-24 23:33:29,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2753e4818/12118419303448c199c272b8b8911742/FLAGc67e16e33 [2020-09-24 23:33:29,553 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:33:29,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2020-09-24 23:33:29,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2753e4818/12118419303448c199c272b8b8911742/FLAGc67e16e33 [2020-09-24 23:33:29,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2753e4818/12118419303448c199c272b8b8911742 [2020-09-24 23:33:29,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:33:29,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:33:29,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:33:29,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:33:29,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:33:29,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:33:29" (1/1) ... [2020-09-24 23:33:29,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19da8246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:29, skipping insertion in model container [2020-09-24 23:33:29,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:33:29" (1/1) ... [2020-09-24 23:33:29,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:33:29,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:33:30,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:33:30,498 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:33:30,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:33:30,633 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:33:30,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30 WrapperNode [2020-09-24 23:33:30,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:33:30,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:33:30,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:33:30,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:33:30,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30" (1/1) ... [2020-09-24 23:33:30,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30" (1/1) ... [2020-09-24 23:33:30,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30" (1/1) ... [2020-09-24 23:33:30,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30" (1/1) ... [2020-09-24 23:33:30,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30" (1/1) ... [2020-09-24 23:33:30,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30" (1/1) ... [2020-09-24 23:33:30,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30" (1/1) ... [2020-09-24 23:33:30,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:33:30,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:33:30,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:33:30,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:33:30,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30" (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 [2020-09-24 23:33:30,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:33:30,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:33:30,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 23:33:30,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 23:33:30,809 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 23:33:30,809 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 23:33:30,809 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 23:33:30,810 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 23:33:30,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 23:33:30,810 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 23:33:30,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 23:33:30,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 23:33:30,810 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 23:33:30,811 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 23:33:30,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 23:33:30,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 23:33:30,811 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 23:33:30,811 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 23:33:30,811 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 23:33:30,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 23:33:30,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 23:33:30,812 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 23:33:30,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 23:33:30,812 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 23:33:30,813 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 23:33:30,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 23:33:30,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 23:33:30,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 23:33:30,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 23:33:30,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 23:33:30,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 23:33:30,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 23:33:30,814 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 23:33:30,814 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 23:33:30,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 23:33:30,814 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 23:33:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:33:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 23:33:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 23:33:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 23:33:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 23:33:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:33:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:33:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 23:33:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 23:33:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 23:33:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 23:33:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 23:33:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 23:33:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 23:33:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 23:33:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 23:33:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 23:33:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 23:33:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 23:33:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:33:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 23:33:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 23:33:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 23:33:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 23:33:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 23:33:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 23:33:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 23:33:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 23:33:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 23:33:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 23:33:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 23:33:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 23:33:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 23:33:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 23:33:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:33:30,819 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:33:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 23:33:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:33:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:33:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:33:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:33:30,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 23:33:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:33:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 23:33:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 23:33:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:33:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 23:33:30,821 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 23:33:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 23:33:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 23:33:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 23:33:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 23:33:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 23:33:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 23:33:30,822 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 23:33:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:33:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 23:33:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:33:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 23:33:30,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:33:32,075 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:33:32,077 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 23:33:32,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:33:32 BoogieIcfgContainer [2020-09-24 23:33:32,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:33:32,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:33:32,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:33:32,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:33:32,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:33:29" (1/3) ... [2020-09-24 23:33:32,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63db1856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:33:32, skipping insertion in model container [2020-09-24 23:33:32,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:33:30" (2/3) ... [2020-09-24 23:33:32,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63db1856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:33:32, skipping insertion in model container [2020-09-24 23:33:32,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:33:32" (3/3) ... [2020-09-24 23:33:32,103 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2020-09-24 23:33:32,118 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:33:32,132 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:33:32,157 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:33:32,203 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:33:32,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:33:32,204 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:33:32,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:33:32,204 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:33:32,204 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:33:32,205 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:33:32,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:33:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states. [2020-09-24 23:33:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 23:33:32,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:33:32,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:33:32,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:33:32,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:33:32,266 INFO L82 PathProgramCache]: Analyzing trace with hash -368362639, now seen corresponding path program 1 times [2020-09-24 23:33:32,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:33:32,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237196440] [2020-09-24 23:33:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:33:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:33,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:37,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:37,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 23:33:37,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 23:33:37,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-24 23:33:37,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:33:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 23:33:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-24 23:33:37,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-24 23:33:38,209 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:33:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:33:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:38,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:38,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 23:33:38,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:38,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-24 23:33:38,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 23:33:38,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:38,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 23:33:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:38,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:38,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:38,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:33:38,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:33:38,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:38,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:38,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:33:38,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 23:33:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:38,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:38,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:38,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:33:38,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:38,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:33:38,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:33:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:33:38,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 23:33:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:38,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:38,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:33:38,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:33:38,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:38,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:33:38,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:38,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 23:33:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:38,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:38,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:33:38,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:38,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:33:38,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:38,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:38,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:33:38,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 23:33:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:38,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:38,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:33:38,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:33:38,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:38,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:38,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:33:38,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 23:33:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:38,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:38,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:38,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:33:38,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:38,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:33:38,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:33:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:33:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:33:38,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 23:33:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:38,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:38,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:33:38,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:38,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:33:38,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:33:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:33:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:33:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:33:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:33:38,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237196440] [2020-09-24 23:33:38,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:33:38,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 23:33:38,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851666234] [2020-09-24 23:33:38,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:33:38,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:33:38,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:33:38,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:33:38,900 INFO L87 Difference]: Start difference. First operand 320 states. Second operand 9 states. [2020-09-24 23:33:39,551 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:33:41,056 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 195 [2020-09-24 23:33:41,704 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 197 [2020-09-24 23:33:42,103 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 23:33:42,584 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 23:33:42,951 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 23:33:43,946 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-24 23:33:44,339 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-09-24 23:33:44,892 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:33:45,679 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 23:33:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:33:46,541 INFO L93 Difference]: Finished difference Result 678 states and 825 transitions. [2020-09-24 23:33:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 23:33:46,544 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 148 [2020-09-24 23:33:46,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:33:46,567 INFO L225 Difference]: With dead ends: 678 [2020-09-24 23:33:46,568 INFO L226 Difference]: Without dead ends: 471 [2020-09-24 23:33:46,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-09-24 23:33:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-24 23:33:46,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 395. [2020-09-24 23:33:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-09-24 23:33:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 440 transitions. [2020-09-24 23:33:46,765 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 440 transitions. Word has length 148 [2020-09-24 23:33:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:33:46,767 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 440 transitions. [2020-09-24 23:33:46,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:33:46,767 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 440 transitions. [2020-09-24 23:33:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 23:33:46,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:33:46,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:33:46,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:33:46,775 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:33:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:33:46,776 INFO L82 PathProgramCache]: Analyzing trace with hash 678958886, now seen corresponding path program 1 times [2020-09-24 23:33:46,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:33:46,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605237356] [2020-09-24 23:33:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:33:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:47,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:51,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:51,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-24 23:33:51,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:33:51,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-24 23:33:51,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:51,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:33:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 23:33:51,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 23:33:51,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:52,399 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:33:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:33:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 23:33:52,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-24 23:33:52,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:52,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 23:33:52,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 23:33:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:33:52,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:33:52,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:33:52,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 23:33:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:33:52,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:33:52,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:33:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:52,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 23:33:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:33:52,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:33:52,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:33:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:52,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 23:33:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:33:52,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:33:52,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:33:52,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:52,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 23:33:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:33:52,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:33:52,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:33:52,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 23:33:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:33:52,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:33:52,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:52,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:33:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:52,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 23:33:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:33:52,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:33:52,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:33:52,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:33:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 23:33:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:33:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:33:52,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:33:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:33:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-24 23:33:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:33:52,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:33:52,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:33:52,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:33:52,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:33:52,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:33:52,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:33:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:33:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:33:52,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:33:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:33:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:33:53,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605237356] [2020-09-24 23:33:53,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:33:53,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 23:33:53,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289223277] [2020-09-24 23:33:53,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:33:53,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:33:53,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:33:53,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:33:53,203 INFO L87 Difference]: Start difference. First operand 395 states and 440 transitions. Second operand 11 states. [2020-09-24 23:33:53,740 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 23:33:55,163 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 23:33:55,514 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 23:33:55,879 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 23:33:56,207 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 23:33:56,541 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 23:33:57,336 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 23:33:57,670 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 23:33:58,029 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:33:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:33:59,760 INFO L93 Difference]: Finished difference Result 1104 states and 1412 transitions. [2020-09-24 23:33:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 23:33:59,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-09-24 23:33:59,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:33:59,772 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 23:33:59,772 INFO L226 Difference]: Without dead ends: 824 [2020-09-24 23:33:59,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 23:33:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-09-24 23:33:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 560. [2020-09-24 23:33:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-09-24 23:33:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 637 transitions. [2020-09-24 23:33:59,910 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 637 transitions. Word has length 167 [2020-09-24 23:33:59,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:33:59,911 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 637 transitions. [2020-09-24 23:33:59,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:33:59,912 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 637 transitions. [2020-09-24 23:33:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-24 23:33:59,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:33:59,917 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:33:59,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:33:59,918 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:33:59,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:33:59,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1468331977, now seen corresponding path program 1 times [2020-09-24 23:33:59,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:33:59,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844991143] [2020-09-24 23:33:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:33:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:00,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:00,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:01,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:04,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:04,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-24 23:34:04,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:34:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 23:34:04,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-09-24 23:34:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 23:34:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,295 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:34:05,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:34:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 23:34:05,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 23:34:05,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 23:34:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:34:05,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:34:05,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 23:34:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:34:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:34:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 23:34:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:34:05,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:34:05,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 23:34:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:34:05,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:34:05,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 23:34:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:34:05,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:34:05,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 23:34:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:34:05,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:34:05,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:34:05,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 23:34:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:34:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:34:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:34:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 23:34:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 23:34:05,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:34:05,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:34:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:34:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:34:05,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:34:05,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:34:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:34:05,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:34:05,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-24 23:34:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 23:34:05,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:34:05,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 23:34:05,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:34:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 23:34:05,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:34:05,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:34:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:34:05,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:34:05,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 23:34:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 23:34:05,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:34:05,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 23:34:05,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:34:05,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 23:34:05,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:34:05,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:34:05,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:34:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:34:05,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 23:34:05,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:34:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 23:34:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:34:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:05,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:34:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:05,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:05,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:34:05,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 23:34:05,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:34:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 23:34:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:06,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:34:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:06,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:06,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:06,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:34:06,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:34:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:34:06,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 23:34:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:06,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:06,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:34:06,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:06,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:34:06,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:06,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:06,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 23:34:06,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:06,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:34:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-09-24 23:34:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:06,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:06,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:06,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:34:06,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:06,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:34:06,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:06,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:34:06,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:34:06,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-09-24 23:34:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:06,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:06,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:06,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:34:06,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:06,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:34:06,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:06,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:34:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:34:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-24 23:34:06,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844991143] [2020-09-24 23:34:06,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:34:06,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 23:34:06,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804502851] [2020-09-24 23:34:06,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:34:06,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:34:06,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:34:06,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:34:06,164 INFO L87 Difference]: Start difference. First operand 560 states and 637 transitions. Second operand 14 states. [2020-09-24 23:34:07,100 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:34:08,550 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:34:08,937 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 23:34:09,259 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 23:34:09,619 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 23:34:09,996 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 23:34:10,308 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 23:34:12,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:34:12,075 INFO L93 Difference]: Finished difference Result 1426 states and 1841 transitions. [2020-09-24 23:34:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 23:34:12,076 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 256 [2020-09-24 23:34:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:34:12,085 INFO L225 Difference]: With dead ends: 1426 [2020-09-24 23:34:12,086 INFO L226 Difference]: Without dead ends: 981 [2020-09-24 23:34:12,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=395, Invalid=1497, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 23:34:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-09-24 23:34:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 574. [2020-09-24 23:34:12,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2020-09-24 23:34:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 645 transitions. [2020-09-24 23:34:12,185 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 645 transitions. Word has length 256 [2020-09-24 23:34:12,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:34:12,185 INFO L479 AbstractCegarLoop]: Abstraction has 574 states and 645 transitions. [2020-09-24 23:34:12,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:34:12,186 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 645 transitions. [2020-09-24 23:34:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 23:34:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:34:12,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:34:12,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:34:12,190 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:34:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:34:12,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1836108882, now seen corresponding path program 1 times [2020-09-24 23:34:12,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:34:12,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641970674] [2020-09-24 23:34:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:34:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:12,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:15,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:15,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 23:34:15,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:34:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3461 [2020-09-24 23:34:15,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:34:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 23:34:15,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 23:34:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:15,977 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:34:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:34:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 23:34:16,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 23:34:16,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:34:16,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 23:34:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:34:16,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:34:16,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 23:34:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:34:16,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:34:16,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 23:34:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:34:16,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:34:16,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:16,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:34:16,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 23:34:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:34:16,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:34:16,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 23:34:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:34:16,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:34:16,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:16,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 23:34:16,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:34:16,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 23:34:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:34:16,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:34:16,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:16,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:34:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 23:34:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:34:16,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:34:16,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:34:16,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 23:34:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 23:34:16,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:34:16,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 23:34:16,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-24 23:34:16,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:34:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:34:16,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:34:16,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 23:34:16,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:34:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:34:16,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:34:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 23:34:16,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:34:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:34:16,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:34:16,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 23:34:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:34:16,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:34:16,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:34:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:34:16,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-24 23:34:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:34:16,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:34:16,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:34:16,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-24 23:34:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:34:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:34:16,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:34:16,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:34:16,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:34:16,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:34:16,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:34:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:34:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:34:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:34:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:34:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:34:16,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641970674] [2020-09-24 23:34:16,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:34:16,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:34:16,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187599136] [2020-09-24 23:34:16,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:34:16,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:34:16,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:34:16,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:34:16,602 INFO L87 Difference]: Start difference. First operand 574 states and 645 transitions. Second operand 8 states. [2020-09-24 23:34:17,344 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 189