/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --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_spec4_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:53:46,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:53:46,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:53:46,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:53:46,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:53:46,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:53:46,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:53:46,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:53:46,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:53:46,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:53:46,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:53:46,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:53:46,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:53:46,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:53:46,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:53:46,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:53:46,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:53:46,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:53:46,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:53:46,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:53:46,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:53:46,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:53:46,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:53:46,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:53:46,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:53:46,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:53:46,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:53:46,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:53:46,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:53:46,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:53:46,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:53:46,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:53:46,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:53:46,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:53:46,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:53:46,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:53:46,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:53:46,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:53:46,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:53:46,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:53:46,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:53:46,356 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 [2020-09-25 01:53:46,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:53:46,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:53:46,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:53:46,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:53:46,403 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:53:46,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:53:46,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:53:46,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:53:46,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:53:46,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:53:46,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:53:46,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:53:46,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:53:46,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:53:46,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:53:46,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:53:46,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:53:46,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:53:46,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:53:46,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:53:46,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:53:46,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:53:46,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:53:46,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:53:46,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:53:46,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:53:46,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:53:46,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:53:46,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:53:46,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 01:53:46,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:53:46,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:53:46,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:53:46,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:53:46,886 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:53:46,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-25 01:53:46,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea6e81b1d/9f874e988bcb4d65b8ad3fd49c35e1fc/FLAG362afaf42 [2020-09-25 01:53:47,547 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:53:47,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product40.cil.c [2020-09-25 01:53:47,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea6e81b1d/9f874e988bcb4d65b8ad3fd49c35e1fc/FLAG362afaf42 [2020-09-25 01:53:47,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea6e81b1d/9f874e988bcb4d65b8ad3fd49c35e1fc [2020-09-25 01:53:47,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:53:47,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:53:47,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:53:47,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:53:47,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:53:47,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:53:47" (1/1) ... [2020-09-25 01:53:47,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559d5a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:47, skipping insertion in model container [2020-09-25 01:53:47,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:53:47" (1/1) ... [2020-09-25 01:53:47,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:53:47,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:53:48,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:53:48,445 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:53:48,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:53:48,568 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:53:48,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48 WrapperNode [2020-09-25 01:53:48,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:53:48,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:53:48,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:53:48,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:53:48,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48" (1/1) ... [2020-09-25 01:53:48,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48" (1/1) ... [2020-09-25 01:53:48,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48" (1/1) ... [2020-09-25 01:53:48,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48" (1/1) ... [2020-09-25 01:53:48,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48" (1/1) ... [2020-09-25 01:53:48,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48" (1/1) ... [2020-09-25 01:53:48,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48" (1/1) ... [2020-09-25 01:53:48,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:53:48,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:53:48,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:53:48,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:53:48,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48" (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 [2020-09-25 01:53:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:53:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:53:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 01:53:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 01:53:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 01:53:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 01:53:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:53:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 01:53:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 01:53:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 01:53:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 01:53:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 01:53:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 01:53:48,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 01:53:48,746 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 01:53:48,746 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 01:53:48,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 01:53:48,746 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 01:53:48,746 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 01:53:48,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 01:53:48,747 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 01:53:48,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:53:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 01:53:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 01:53:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 01:53:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 01:53:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 01:53:48,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 01:53:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 01:53:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 01:53:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 01:53:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 01:53:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 01:53:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 01:53:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 01:53:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:53:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 01:53:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 01:53:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 01:53:48,750 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 01:53:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:53:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:53:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 01:53:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 01:53:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 01:53:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 01:53:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 01:53:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 01:53:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 01:53:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 01:53:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 01:53:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 01:53:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 01:53:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 01:53:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 01:53:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 01:53:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 01:53:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 01:53:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-25 01:53:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 01:53:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 01:53:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 01:53:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 01:53:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 01:53:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:53:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 01:53:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 01:53:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 01:53:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 01:53:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 01:53:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 01:53:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 01:53:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:53:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 01:53:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 01:53:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:53:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:53:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 01:53:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:53:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:53:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:53:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:53:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 01:53:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:53:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 01:53:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 01:53:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:53:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 01:53:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 01:53:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 01:53:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 01:53:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:53:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 01:53:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:53:49,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:53:49,946 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 01:53:49,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:53:49 BoogieIcfgContainer [2020-09-25 01:53:49,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:53:49,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:53:49,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:53:49,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:53:49,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:53:47" (1/3) ... [2020-09-25 01:53:49,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6b238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:53:49, skipping insertion in model container [2020-09-25 01:53:49,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:53:48" (2/3) ... [2020-09-25 01:53:49,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a6b238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:53:49, skipping insertion in model container [2020-09-25 01:53:49,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:53:49" (3/3) ... [2020-09-25 01:53:49,963 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-09-25 01:53:49,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:53:49,987 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:53:50,010 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:53:50,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:53:50,045 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:53:50,045 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:53:50,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:53:50,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:53:50,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:53:50,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:53:50,046 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:53:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states. [2020-09-25 01:53:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:53:50,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:53:50,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:53:50,095 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:53:50,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:53:50,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1162021346, now seen corresponding path program 1 times [2020-09-25 01:53:50,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:53:50,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510917699] [2020-09-25 01:53:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:53:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:52,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:53,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:55,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:55,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:53:55,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:53:55,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 01:53:55,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 01:53:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:55,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:53:55,867 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:53:55,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:53:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:56,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:56,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:53:56,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:56,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 01:53:56,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:53:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:56,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:56,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:56,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:56,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:56,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:53:56,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:56,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:56,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:53:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:56,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:56,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:56,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:56,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:56,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:53:56,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:56,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:53:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:56,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:56,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:56,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:56,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:56,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:53:56,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:56,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:56,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:53:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:53:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:56,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:56,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:53:56,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:53:56,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:53:56,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:56,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:56,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-25 01:53:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:56,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:56,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:56,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:56,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:56,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:53:56,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:56,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:53:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:56,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:53:56,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-25 01:53:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:56,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:56,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:53:56,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:53:56,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:53:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:53:56,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:53:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:53:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:53:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:53:56,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:53:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:53:56,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510917699] [2020-09-25 01:53:56,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:53:56,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:53:56,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904260023] [2020-09-25 01:53:56,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:53:56,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:53:56,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:53:56,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:53:56,246 INFO L87 Difference]: Start difference. First operand 316 states. Second operand 3 states. [2020-09-25 01:53:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:53:57,655 INFO L93 Difference]: Finished difference Result 500 states and 595 transitions. [2020-09-25 01:53:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:53:57,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-25 01:53:57,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:53:57,678 INFO L225 Difference]: With dead ends: 500 [2020-09-25 01:53:57,678 INFO L226 Difference]: Without dead ends: 309 [2020-09-25 01:53:57,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:53:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-09-25 01:53:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 265. [2020-09-25 01:53:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-09-25 01:53:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2020-09-25 01:53:57,797 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 142 [2020-09-25 01:53:57,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:53:57,798 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2020-09-25 01:53:57,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:53:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2020-09-25 01:53:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 01:53:57,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:53:57,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:53:57,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:53:57,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:53:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:53:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash -509379685, now seen corresponding path program 1 times [2020-09-25 01:53:57,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:53:57,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109657380] [2020-09-25 01:53:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:53:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:53:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:58,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:53:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:00,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:01,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:02,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:02,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 01:54:02,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 01:54:02,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 01:54:02,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 01:54:02,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 01:54:02,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:03,173 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:03,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:03,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:03,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:03,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:03,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 01:54:03,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:03,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:03,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:03,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:03,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:03,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:03,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:03,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:03,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:03,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:03,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:03,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:03,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:03,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:03,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:03,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:03,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:03,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:03,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:03,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:03,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:03,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:03,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:03,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:03,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:03,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:03,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:03,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:03,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:03,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:03,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:03,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:03,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:03,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:03,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:03,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:03,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:03,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:03,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:03,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 01:54:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:03,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:03,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:03,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:03,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:03,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:03,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:03,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:03,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:03,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:03,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:03,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:03,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:03,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:03,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:03,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:03,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109657380] [2020-09-25 01:54:03,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:03,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:54:03,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931399282] [2020-09-25 01:54:03,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:54:03,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:03,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:54:03,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:54:03,385 INFO L87 Difference]: Start difference. First operand 265 states and 288 transitions. Second operand 4 states. [2020-09-25 01:54:03,986 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:05,032 INFO L93 Difference]: Finished difference Result 407 states and 458 transitions. [2020-09-25 01:54:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:54:05,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 01:54:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:05,036 INFO L225 Difference]: With dead ends: 407 [2020-09-25 01:54:05,036 INFO L226 Difference]: Without dead ends: 292 [2020-09-25 01:54:05,038 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 [2020-09-25 01:54:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-25 01:54:05,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2020-09-25 01:54:05,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-25 01:54:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 275 transitions. [2020-09-25 01:54:05,095 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 275 transitions. Word has length 143 [2020-09-25 01:54:05,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:05,096 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 275 transitions. [2020-09-25 01:54:05,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:54:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 275 transitions. [2020-09-25 01:54:05,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 01:54:05,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:05,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:05,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:54:05,099 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:05,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:05,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1147925299, now seen corresponding path program 1 times [2020-09-25 01:54:05,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:05,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756776247] [2020-09-25 01:54:05,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:07,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:10,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 01:54:10,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:10,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 01:54:10,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:10,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 01:54:10,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:54:10,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:10,533 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:10,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:10,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:10,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 01:54:10,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:10,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:10,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:10,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:10,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:10,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:10,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:10,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:10,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:10,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:10,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:10,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:10,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:10,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:10,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:10,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:10,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:10,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:10,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:10,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:10,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:10,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:10,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:10,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:10,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:10,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:10,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:10,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:10,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:54:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:10,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:10,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:10,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:54:10,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:10,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:54:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:10,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 01:54:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:10,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:10,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:10,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:10,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:10,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-25 01:54:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:10,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:10,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:10,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:10,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:10,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:10,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 01:54:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:10,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756776247] [2020-09-25 01:54:10,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:10,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:54:10,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568237965] [2020-09-25 01:54:10,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:54:10,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:10,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:54:10,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:54:10,778 INFO L87 Difference]: Start difference. First operand 255 states and 275 transitions. Second operand 5 states. [2020-09-25 01:54:11,406 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:13,273 INFO L93 Difference]: Finished difference Result 615 states and 712 transitions. [2020-09-25 01:54:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 01:54:13,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 01:54:13,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:13,279 INFO L225 Difference]: With dead ends: 615 [2020-09-25 01:54:13,279 INFO L226 Difference]: Without dead ends: 470 [2020-09-25 01:54:13,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:54:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-09-25 01:54:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 390. [2020-09-25 01:54:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-09-25 01:54:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 431 transitions. [2020-09-25 01:54:13,368 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 431 transitions. Word has length 156 [2020-09-25 01:54:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:13,368 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 431 transitions. [2020-09-25 01:54:13,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:54:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 431 transitions. [2020-09-25 01:54:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 01:54:13,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:13,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:13,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:54:13,372 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:13,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:13,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1964515528, now seen corresponding path program 1 times [2020-09-25 01:54:13,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:13,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930861874] [2020-09-25 01:54:13,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:13,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:14,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:18,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:18,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 01:54:18,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:54:18,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 01:54:18,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:18,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 01:54:18,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:54:18,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:18,852 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:18,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:18,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:18,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:18,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:18,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 01:54:18,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:18,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:18,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:19,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:19,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:19,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:19,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:19,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:19,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:19,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:19,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:19,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:19,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:19,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:19,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:19,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:19,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:19,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:19,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:19,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:19,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:19,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:19,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:19,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:19,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-25 01:54:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:19,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:19,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:54:19,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:19,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:19,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:19,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:19,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:19,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 01:54:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:19,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:19,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:19,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:19,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:19,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:54:19,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:19,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:19,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 01:54:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:19,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:19,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:19,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:54:19,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:54:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:54:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:19,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930861874] [2020-09-25 01:54:19,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:19,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 01:54:19,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142497997] [2020-09-25 01:54:19,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 01:54:19,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:19,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 01:54:19,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 01:54:19,187 INFO L87 Difference]: Start difference. First operand 390 states and 431 transitions. Second operand 9 states. [2020-09-25 01:54:19,698 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:20,910 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:21,490 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 190 [2020-09-25 01:54:21,803 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:22,132 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:54:22,446 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:54:23,046 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 01:54:23,362 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:54:23,701 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:24,682 INFO L93 Difference]: Finished difference Result 925 states and 1107 transitions. [2020-09-25 01:54:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 01:54:24,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-25 01:54:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:24,689 INFO L225 Difference]: With dead ends: 925 [2020-09-25 01:54:24,689 INFO L226 Difference]: Without dead ends: 645 [2020-09-25 01:54:24,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 01:54:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-09-25 01:54:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 568. [2020-09-25 01:54:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-09-25 01:54:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 646 transitions. [2020-09-25 01:54:24,772 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 646 transitions. Word has length 161 [2020-09-25 01:54:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:24,772 INFO L479 AbstractCegarLoop]: Abstraction has 568 states and 646 transitions. [2020-09-25 01:54:24,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 01:54:24,773 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 646 transitions. [2020-09-25 01:54:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 01:54:24,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:24,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:24,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:54:24,776 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:24,777 INFO L82 PathProgramCache]: Analyzing trace with hash 218420569, now seen corresponding path program 1 times [2020-09-25 01:54:24,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:24,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883571213] [2020-09-25 01:54:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:24,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:29,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:29,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 01:54:29,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:54:29,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 01:54:29,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:29,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 01:54:29,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:29,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,116 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 01:54:30,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:54:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 01:54:30,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 01:54:30,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 01:54:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:30,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:30,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:54:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:30,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:30,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 01:54:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:30,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:54:30,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:30,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 01:54:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:54:30,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:30,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:30,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 01:54:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:30,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:30,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:30,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 01:54:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 01:54:30,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 01:54:30,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:30,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:54:30,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:30,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 01:54:30,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 01:54:30,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:54:30,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:54:30,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:54:30,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 01:54:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 01:54:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 01:54:30,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 01:54:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:54:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:54:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 01:54:30,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:54:30,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:54:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-25 01:54:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:54:30,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:30,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:54:30,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-25 01:54:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:30,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 01:54:30,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-25 01:54:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:30,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:30,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:54:30,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:54:30,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:54:30,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:54:30,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 01:54:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:54:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 01:54:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:54:30,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:54:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:54:30,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883571213] [2020-09-25 01:54:30,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:54:30,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 01:54:30,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747294990] [2020-09-25 01:54:30,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 01:54:30,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:54:30,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 01:54:30,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 01:54:30,568 INFO L87 Difference]: Start difference. First operand 568 states and 646 transitions. Second operand 10 states. [2020-09-25 01:54:32,027 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 01:54:32,355 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-25 01:54:32,688 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-25 01:54:33,009 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:33,330 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-25 01:54:33,620 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 01:54:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:54:34,706 INFO L93 Difference]: Finished difference Result 1201 states and 1453 transitions. [2020-09-25 01:54:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:54:34,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2020-09-25 01:54:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:54:34,713 INFO L225 Difference]: With dead ends: 1201 [2020-09-25 01:54:34,713 INFO L226 Difference]: Without dead ends: 743 [2020-09-25 01:54:34,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 01:54:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2020-09-25 01:54:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 587. [2020-09-25 01:54:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-09-25 01:54:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 666 transitions. [2020-09-25 01:54:34,788 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 666 transitions. Word has length 194 [2020-09-25 01:54:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:54:34,789 INFO L479 AbstractCegarLoop]: Abstraction has 587 states and 666 transitions. [2020-09-25 01:54:34,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 01:54:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 666 transitions. [2020-09-25 01:54:34,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 01:54:34,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:54:34,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:54:34,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:54:34,793 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:54:34,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:54:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash -755449607, now seen corresponding path program 1 times [2020-09-25 01:54:34,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:54:34,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648393604] [2020-09-25 01:54:34,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:54:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:54:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:54:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking...