/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:06:54,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:06:54,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:06:54,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:06:54,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:06:54,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:06:54,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:06:54,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:06:54,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:06:54,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:06:54,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:06:54,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:06:54,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:06:54,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:06:54,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:06:54,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:06:54,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:06:54,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:06:54,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:06:54,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:06:54,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:06:54,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:06:54,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:06:54,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:06:54,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:06:54,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:06:54,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:06:54,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:06:54,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:06:54,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:06:54,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:06:54,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:06:54,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:06:54,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:06:54,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:06:54,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:06:54,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:06:54,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:06:54,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:06:54,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:06:54,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:06:54,371 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 [2020-09-21 12:06:54,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:06:54,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:06:54,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:06:54,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:06:54,401 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:06:54,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:06:54,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:06:54,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:06:54,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:06:54,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:06:54,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:06:54,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:06:54,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:06:54,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:06:54,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:06:54,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:06:54,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:06:54,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:06:54,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:06:54,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:06:54,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:06:54,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:06:54,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:06:54,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:06:54,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:06:54,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:06:54,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:06:54,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:06:54,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:06:54,406 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:06:54,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:06:54,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:06:54,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:06:54,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:06:54,870 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:06:54,871 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-09-21 12:06:54,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e0028bdb/99b009c8681b47a685e693b69adc308a/FLAG0ad4445cd [2020-09-21 12:06:55,619 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:06:55,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-09-21 12:06:55,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e0028bdb/99b009c8681b47a685e693b69adc308a/FLAG0ad4445cd [2020-09-21 12:06:55,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e0028bdb/99b009c8681b47a685e693b69adc308a [2020-09-21 12:06:55,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:06:55,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:06:55,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:06:55,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:06:55,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:06:55,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:06:55" (1/1) ... [2020-09-21 12:06:55,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47743781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:55, skipping insertion in model container [2020-09-21 12:06:55,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:06:55" (1/1) ... [2020-09-21 12:06:55,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:06:55,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:06:56,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:06:56,439 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:06:56,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:06:56,588 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:06:56,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56 WrapperNode [2020-09-21 12:06:56,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:06:56,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:06:56,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:06:56,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:06:56,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56" (1/1) ... [2020-09-21 12:06:56,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56" (1/1) ... [2020-09-21 12:06:56,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56" (1/1) ... [2020-09-21 12:06:56,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56" (1/1) ... [2020-09-21 12:06:56,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56" (1/1) ... [2020-09-21 12:06:56,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56" (1/1) ... [2020-09-21 12:06:56,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56" (1/1) ... [2020-09-21 12:06:56,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:06:56,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:06:56,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:06:56,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:06:56,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56" (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 [2020-09-21 12:06:56,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:06:56,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:06:56,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:06:56,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:06:56,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:06:56,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:06:56,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:06:56,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:06:56,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:06:56,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:06:56,816 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:06:56,816 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:06:56,816 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:06:56,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:06:56,817 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 12:06:56,817 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:06:56,817 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:06:56,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:06:56,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:06:56,818 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:06:56,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:06:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:06:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:06:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:06:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:06:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:06:56,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:06:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:06:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:06:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:06:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:06:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:06:56,820 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:06:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:06:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:06:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:06:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:06:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:06:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:06:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:06:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:06:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:06:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:06:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:06:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:06:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:06:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:06:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:06:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:06:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:06:56,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:06:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:06:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:06:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:06:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:06:56,824 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:06:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:06:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:06:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:06:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:06:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:06:56,825 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:06:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:06:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:06:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:06:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:06:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:06:56,826 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:06:56,827 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:06:56,827 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:06:56,827 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:06:56,827 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:06:56,827 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:06:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:06:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:06:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:06:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 12:06:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:06:56,828 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:06:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:06:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 12:06:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:06:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:06:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:06:56,829 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:06:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:06:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:06:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:06:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:06:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:06:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:06:56,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:06:56,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:06:56,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:06:57,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:06:57,912 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:06:57,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:06:57 BoogieIcfgContainer [2020-09-21 12:06:57,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:06:57,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:06:57,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:06:57,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:06:57,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:06:55" (1/3) ... [2020-09-21 12:06:57,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4226718c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:06:57, skipping insertion in model container [2020-09-21 12:06:57,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:06:56" (2/3) ... [2020-09-21 12:06:57,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4226718c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:06:57, skipping insertion in model container [2020-09-21 12:06:57,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:06:57" (3/3) ... [2020-09-21 12:06:57,928 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-09-21 12:06:57,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:06:57,951 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:06:57,974 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:06:58,004 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:06:58,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:06:58,004 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:06:58,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:06:58,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:06:58,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:06:58,005 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:06:58,005 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:06:58,031 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-09-21 12:06:58,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:06:58,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:06:58,044 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] [2020-09-21 12:06:58,045 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:06:58,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:06:58,053 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-09-21 12:06:58,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:06:58,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319269899] [2020-09-21 12:06:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:06:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:58,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:58,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:06:59,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:06:59,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1060 [2020-09-21 12:06:59,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:06:59,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:06:59,795 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:06:59,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:06:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:59,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-21 12:06:59,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:06:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:59,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:06:59,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:06:59,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:06:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:59,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:06:59,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:06:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:59,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:06:59,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:06:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:06:59,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:06:59,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:06:59,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:06:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:59,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:59,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:06:59,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:06:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:06:59,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:06:59,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:06:59,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:06:59,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:06:59,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:06:59,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:06:59,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:06:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:06:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:06:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:06:59,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:06:59,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319269899] [2020-09-21 12:06:59,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:06:59,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:06:59,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672373404] [2020-09-21 12:06:59,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:06:59,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:06:59,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:06:59,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:06:59,993 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-09-21 12:07:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:01,256 INFO L93 Difference]: Finished difference Result 304 states and 394 transitions. [2020-09-21 12:07:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:07:01,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:07:01,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:01,276 INFO L225 Difference]: With dead ends: 304 [2020-09-21 12:07:01,276 INFO L226 Difference]: Without dead ends: 165 [2020-09-21 12:07:01,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:07:01,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-21 12:07:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 130. [2020-09-21 12:07:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-21 12:07:01,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-09-21 12:07:01,421 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-09-21 12:07:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:01,422 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-09-21 12:07:01,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:07:01,423 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-09-21 12:07:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:07:01,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:01,429 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] [2020-09-21 12:07:01,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:07:01,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:01,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:01,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-09-21 12:07:01,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:01,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071971316] [2020-09-21 12:07:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:01,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:02,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:03,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:03,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:07:03,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1501 [2020-09-21 12:07:03,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:07:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:03,308 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:03,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:03,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:03,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:03,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-21 12:07:03,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:03,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:03,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:03,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:03,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:03,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:03,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:03,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:03,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:03,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:03,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:03,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:03,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:03,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:03,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:03,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:03,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:03,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:03,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:03,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:03,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:03,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:03,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:03,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:03,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:03,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:03,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:03,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:07:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:03,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:03,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:03,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:03,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:03,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:03,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:03,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:03,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:07:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:03,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:03,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:03,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:03,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:03,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:03,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:03,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:03,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071971316] [2020-09-21 12:07:03,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:03,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:03,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392908828] [2020-09-21 12:07:03,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:03,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:03,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:03,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:03,467 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-09-21 12:07:03,996 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:04,758 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2020-09-21 12:07:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:04,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:07:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:04,762 INFO L225 Difference]: With dead ends: 224 [2020-09-21 12:07:04,762 INFO L226 Difference]: Without dead ends: 149 [2020-09-21 12:07:04,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:04,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-21 12:07:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 121. [2020-09-21 12:07:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-21 12:07:04,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-09-21 12:07:04,802 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-09-21 12:07:04,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:04,802 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-09-21 12:07:04,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-09-21 12:07:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:07:04,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:04,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:04,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:07:04,805 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:04,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:04,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-09-21 12:07:04,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:04,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632962185] [2020-09-21 12:07:04,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:04,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:05,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:05,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:07:05,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:05,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-21 12:07:05,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:07:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:07:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:06,288 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:06,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:06,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-21 12:07:06,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:06,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:06,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:06,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:06,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:06,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:06,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:06,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:06,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:06,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:06,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:06,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:06,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:06,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:06,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:06,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:06,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:06,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:07:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:06,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:06,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:06,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:06,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:07:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:06,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:06,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:06,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:06,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:06,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:06,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:06,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632962185] [2020-09-21 12:07:06,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:06,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:07:06,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976443216] [2020-09-21 12:07:06,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:07:06,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:06,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:07:06,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:07:06,543 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 4 states. [2020-09-21 12:07:06,853 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:08,419 INFO L93 Difference]: Finished difference Result 355 states and 431 transitions. [2020-09-21 12:07:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:07:08,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:07:08,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:08,425 INFO L225 Difference]: With dead ends: 355 [2020-09-21 12:07:08,425 INFO L226 Difference]: Without dead ends: 258 [2020-09-21 12:07:08,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:07:08,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-09-21 12:07:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 202. [2020-09-21 12:07:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-21 12:07:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 237 transitions. [2020-09-21 12:07:08,490 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 237 transitions. Word has length 52 [2020-09-21 12:07:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:08,491 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 237 transitions. [2020-09-21 12:07:08,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:07:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 237 transitions. [2020-09-21 12:07:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:07:08,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:08,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:07:08,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:07:08,494 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:08,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-09-21 12:07:08,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:08,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555102236] [2020-09-21 12:07:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:07:09,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-21 12:07:09,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:07:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:07:09,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:07:09,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:09,927 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:09,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:09,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:09,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:07:09,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:10,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:10,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:10,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:10,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:10,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:07:10,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:10,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:10,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:10,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:10,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:07:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:10,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:07:10,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:10,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:07:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:10,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:10,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:07:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:10,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:10,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:10,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:10,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:10,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:10,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:07:10,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555102236] [2020-09-21 12:07:10,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:10,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:10,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064278184] [2020-09-21 12:07:10,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:10,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:10,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:10,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:10,140 INFO L87 Difference]: Start difference. First operand 202 states and 237 transitions. Second operand 8 states. [2020-09-21 12:07:10,579 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:11,621 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:11,989 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:12,325 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:13,019 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:13,390 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:14,146 INFO L93 Difference]: Finished difference Result 555 states and 706 transitions. [2020-09-21 12:07:14,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:07:14,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 12:07:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:14,152 INFO L225 Difference]: With dead ends: 555 [2020-09-21 12:07:14,153 INFO L226 Difference]: Without dead ends: 377 [2020-09-21 12:07:14,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:07:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-09-21 12:07:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 326. [2020-09-21 12:07:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-09-21 12:07:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 394 transitions. [2020-09-21 12:07:14,244 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 394 transitions. Word has length 57 [2020-09-21 12:07:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:14,245 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 394 transitions. [2020-09-21 12:07:14,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 394 transitions. [2020-09-21 12:07:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-21 12:07:14,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:14,249 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:07:14,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:07:14,250 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1672037846, now seen corresponding path program 1 times [2020-09-21 12:07:14,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:14,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936453839] [2020-09-21 12:07:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:14,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:14,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-21 12:07:15,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:15,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:07:15,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-21 12:07:15,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:15,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,599 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:15,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:15,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:07:15,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:15,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:15,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:15,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:15,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:15,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:15,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:15,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:15,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:15,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:15,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:15,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:15,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:15,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:15,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:15,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:15,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:15,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-21 12:07:15,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:07:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:16,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:07:16,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:07:16,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:16,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:16,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:07:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:16,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:16,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:07:16,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:07:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:16,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:16,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:16,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:16,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:16,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:16,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:16,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:16,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:16,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:16,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:16,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:16,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:16,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:16,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:16,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 12:07:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:16,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:16,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:16,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:16,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 12:07:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:16,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:16,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:16,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:16,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:16,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:16,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:16,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:16,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936453839] [2020-09-21 12:07:16,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:16,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:07:16,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272197576] [2020-09-21 12:07:16,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:07:16,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:16,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:07:16,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:07:16,140 INFO L87 Difference]: Start difference. First operand 326 states and 394 transitions. Second operand 7 states. [2020-09-21 12:07:17,054 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:17,418 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:17,760 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:18,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:18,601 INFO L93 Difference]: Finished difference Result 699 states and 900 transitions. [2020-09-21 12:07:18,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:07:18,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-09-21 12:07:18,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:18,607 INFO L225 Difference]: With dead ends: 699 [2020-09-21 12:07:18,607 INFO L226 Difference]: Without dead ends: 397 [2020-09-21 12:07:18,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:18,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-09-21 12:07:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 337. [2020-09-21 12:07:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-09-21 12:07:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 405 transitions. [2020-09-21 12:07:18,672 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 405 transitions. Word has length 90 [2020-09-21 12:07:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:18,673 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 405 transitions. [2020-09-21 12:07:18,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:07:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 405 transitions. [2020-09-21 12:07:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-21 12:07:18,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:18,677 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:07:18,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:07:18,677 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:18,678 INFO L82 PathProgramCache]: Analyzing trace with hash 774644568, now seen corresponding path program 1 times [2020-09-21 12:07:18,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:18,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143171548] [2020-09-21 12:07:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:18,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:19,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-21 12:07:20,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1313 [2020-09-21 12:07:20,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:07:20,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:20,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-21 12:07:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:20,298 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:20,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:20,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-21 12:07:20,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:07:20,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:20,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:20,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:20,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:20,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:20,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:20,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:20,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:20,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:20,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:20,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:20,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:20,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:20,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:20,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:20,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:07:20,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:07:20,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-21 12:07:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:20,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:07:20,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:07:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:20,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:20,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:20,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:07:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:07:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:20,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:20,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:20,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:20,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:20,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:20,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:20,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:20,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:20,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 12:07:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:20,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:20,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:20,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 12:07:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:20,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:20,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:20,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:20,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:20,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:20,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:20,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:20,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:20,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:20,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143171548] [2020-09-21 12:07:20,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:20,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:07:20,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666902118] [2020-09-21 12:07:20,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:07:20,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:20,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:07:20,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:07:20,667 INFO L87 Difference]: Start difference. First operand 337 states and 405 transitions. Second operand 6 states. [2020-09-21 12:07:21,031 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:21,650 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:24,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:24,006 INFO L93 Difference]: Finished difference Result 1246 states and 1643 transitions. [2020-09-21 12:07:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:07:24,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-09-21 12:07:24,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:24,015 INFO L225 Difference]: With dead ends: 1246 [2020-09-21 12:07:24,015 INFO L226 Difference]: Without dead ends: 933 [2020-09-21 12:07:24,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-09-21 12:07:24,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 857. [2020-09-21 12:07:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 857 states. [2020-09-21 12:07:24,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1061 transitions. [2020-09-21 12:07:24,181 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1061 transitions. Word has length 90 [2020-09-21 12:07:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:24,181 INFO L479 AbstractCegarLoop]: Abstraction has 857 states and 1061 transitions. [2020-09-21 12:07:24,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:07:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1061 transitions. [2020-09-21 12:07:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-21 12:07:24,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:24,185 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:07:24,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:07:24,185 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:24,186 INFO L82 PathProgramCache]: Analyzing trace with hash -298901611, now seen corresponding path program 1 times [2020-09-21 12:07:24,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:24,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510892336] [2020-09-21 12:07:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-21 12:07:25,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:25,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-21 12:07:25,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-21 12:07:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:25,504 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:25,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:25,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:07:25,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:25,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:25,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:25,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:25,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:25,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:25,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:25,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:25,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:25,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:25,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-21 12:07:25,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:25,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:07:25,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:07:25,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:07:25,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:07:25,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:25,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:25,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:25,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:07:25,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:07:25,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:25,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:25,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:25,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:25,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:25,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:25,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:25,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 12:07:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:25,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:25,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 12:07:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:25,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:25,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:25,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:25,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:25,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:25,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510892336] [2020-09-21 12:07:25,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:25,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:07:25,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857576629] [2020-09-21 12:07:25,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:07:25,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:25,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:07:25,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:07:25,875 INFO L87 Difference]: Start difference. First operand 857 states and 1061 transitions. Second operand 8 states. [2020-09-21 12:07:26,989 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:27,301 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:27,679 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:28,011 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:28,878 INFO L93 Difference]: Finished difference Result 1788 states and 2304 transitions. [2020-09-21 12:07:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:07:28,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-09-21 12:07:28,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:28,888 INFO L225 Difference]: With dead ends: 1788 [2020-09-21 12:07:28,888 INFO L226 Difference]: Without dead ends: 955 [2020-09-21 12:07:28,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:07:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-21 12:07:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 877. [2020-09-21 12:07:29,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-09-21 12:07:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1081 transitions. [2020-09-21 12:07:29,059 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1081 transitions. Word has length 90 [2020-09-21 12:07:29,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:29,059 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 1081 transitions. [2020-09-21 12:07:29,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:07:29,059 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1081 transitions. [2020-09-21 12:07:29,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-21 12:07:29,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:29,062 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:07:29,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:07:29,063 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:29,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:29,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1196294889, now seen corresponding path program 1 times [2020-09-21 12:07:29,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:29,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139985437] [2020-09-21 12:07:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:29,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-21 12:07:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:07:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:07:30,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-21 12:07:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:30,427 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:30,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:30,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:07:30,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:30,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:30,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:30,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:30,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:30,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:30,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:30,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:30,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:30,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:07:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:30,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:07:30,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:07:30,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:30,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:30,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:07:30,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:07:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:30,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:30,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:07:30,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:30,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:30,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:07:30,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:07:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:30,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:30,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:30,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:30,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:30,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:30,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:30,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 12:07:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:30,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:30,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 12:07:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:30,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:30,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:30,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:30,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:30,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:30,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139985437] [2020-09-21 12:07:30,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:30,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:07:30,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534954178] [2020-09-21 12:07:30,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:07:30,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:30,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:07:30,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:07:30,722 INFO L87 Difference]: Start difference. First operand 877 states and 1081 transitions. Second operand 7 states. [2020-09-21 12:07:31,723 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:32,049 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:32,361 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:33,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:33,319 INFO L93 Difference]: Finished difference Result 1577 states and 1998 transitions. [2020-09-21 12:07:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:07:33,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-09-21 12:07:33,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:33,324 INFO L225 Difference]: With dead ends: 1577 [2020-09-21 12:07:33,324 INFO L226 Difference]: Without dead ends: 724 [2020-09-21 12:07:33,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:07:33,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-09-21 12:07:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 684. [2020-09-21 12:07:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-09-21 12:07:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 830 transitions. [2020-09-21 12:07:33,456 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 830 transitions. Word has length 90 [2020-09-21 12:07:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:33,457 INFO L479 AbstractCegarLoop]: Abstraction has 684 states and 830 transitions. [2020-09-21 12:07:33,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:07:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 830 transitions. [2020-09-21 12:07:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:07:33,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:33,461 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:07:33,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:07:33,462 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:33,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:33,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1962446450, now seen corresponding path program 1 times [2020-09-21 12:07:33,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:33,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136324988] [2020-09-21 12:07:33,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:33,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:33,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-21 12:07:34,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:34,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:07:34,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 12:07:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-21 12:07:34,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:07:34,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,820 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:34,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 12:07:34,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:34,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:34,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:34,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:34,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:34,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:34,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:34,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:34,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:07:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:34,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:34,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:34,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:34,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:34,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:34,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:07:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:35,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:35,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-21 12:07:35,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:07:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:35,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-21 12:07:35,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:35,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:35,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:35,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:35,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:35,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:35,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:35,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:35,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:35,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:35,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:35,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:35,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:35,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:35,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:35,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:35,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:35,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:07:35,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:07:35,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:35,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:07:35,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:35,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:35,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:07:35,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:07:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:07:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:07:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:35,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:07:35,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:07:35,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:07:35,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:35,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:35,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:35,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:35,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 12:07:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:35,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:35,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:07:35,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:07:35,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 12:07:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:35,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:35,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:35,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:35,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:35,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:35,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:35,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:35,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:07:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:07:35,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136324988] [2020-09-21 12:07:35,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:07:35,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-21 12:07:35,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169113781] [2020-09-21 12:07:35,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:07:35,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:35,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:07:35,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:07:35,422 INFO L87 Difference]: Start difference. First operand 684 states and 830 transitions. Second operand 13 states. [2020-09-21 12:07:36,021 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:37,294 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:07:37,713 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:38,073 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:38,384 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:07:38,822 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:07:39,713 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:40,100 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:07:40,515 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:40,833 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:07:41,242 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:07:41,619 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:07:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:07:42,778 INFO L93 Difference]: Finished difference Result 1965 states and 2551 transitions. [2020-09-21 12:07:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-21 12:07:42,778 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-09-21 12:07:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:07:42,788 INFO L225 Difference]: With dead ends: 1965 [2020-09-21 12:07:42,789 INFO L226 Difference]: Without dead ends: 1305 [2020-09-21 12:07:42,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2020-09-21 12:07:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2020-09-21 12:07:43,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1223. [2020-09-21 12:07:43,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1223 states. [2020-09-21 12:07:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1508 transitions. [2020-09-21 12:07:43,188 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1508 transitions. Word has length 94 [2020-09-21 12:07:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:07:43,188 INFO L479 AbstractCegarLoop]: Abstraction has 1223 states and 1508 transitions. [2020-09-21 12:07:43,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:07:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1508 transitions. [2020-09-21 12:07:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-21 12:07:43,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:07:43,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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] [2020-09-21 12:07:43,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:07:43,198 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:07:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:07:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1051353802, now seen corresponding path program 1 times [2020-09-21 12:07:43,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:07:43,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351956242] [2020-09-21 12:07:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:07:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:43,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:43,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-21 12:07:43,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:07:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-09-21 12:07:43,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-21 12:07:43,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-21 12:07:43,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,088 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:07:44,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:07:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:07:44,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:07:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:44,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:07:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:44,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:07:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:07:44,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:44,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:07:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:07:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:07:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:44,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:07:44,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:07:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:07:44,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:07:44,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:07:44,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:07:44,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:07:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:07:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:07:44,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:07:44,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:07:44,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:07:44,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:07:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:07:44,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:07:44,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:07:44,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:07:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:07:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:07:44,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:44,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:07:44,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:07:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:07:44,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-21 12:07:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:44,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:44,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-21 12:07:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:07:44,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:07:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:07:44,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:07:44,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:07:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:44,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-21 12:07:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:07:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:07:44,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:07:44,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:07:44,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:07:44,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:07:44,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:07:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:07:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:07:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:07:44,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:07:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-21 12:07:44,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351956242] [2020-09-21 12:07:44,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:07:44,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:07:44,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310649331] [2020-09-21 12:07:44,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:07:44,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:07:44,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:07:44,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:07:44,522 INFO L87 Difference]: Start difference. First operand 1223 states and 1508 transitions. Second operand 9 states. [2020-09-21 12:07:45,170 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187