/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 interpolation-heuristic=FIRST --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_spec3_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:46:39,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:46:39,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:46:39,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:46:39,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:46:39,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:46:39,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:46:39,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:46:39,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:46:39,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:46:39,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:46:39,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:46:39,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:46:39,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:46:39,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:46:39,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:46:39,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:46:39,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:46:39,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:46:39,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:46:39,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:46:39,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:46:39,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:46:39,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:46:39,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:46:39,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:46:39,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:46:39,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:46:39,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:46:39,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:46:39,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:46:39,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:46:39,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:46:39,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:46:39,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:46:39,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:46:39,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:46:39,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:46:39,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:46:39,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:46:39,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:46:39,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:46:39,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:46:39,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:46:39,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:46:39,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:46:39,909 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:46:39,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:46:39,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:46:39,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:46:39,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:46:39,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:46:39,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:46:39,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:46:39,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:46:39,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:46:39,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:46:39,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:46:39,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:46:39,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:46:39,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:46:39,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:46:39,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:46:39,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:46:39,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:46:39,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:46:39,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:46:39,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:46:39,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:46:39,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:46:39,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:46:39,916 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:46:40,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:46:40,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:46:40,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:46:40,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:46:40,378 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:46:40,379 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-09-24 15:46:40,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0478256af/2537736dc5aa49d4a71ad0edb46fce0d/FLAGc5d4c47f8 [2020-09-24 15:46:41,070 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:46:41,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-09-24 15:46:41,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0478256af/2537736dc5aa49d4a71ad0edb46fce0d/FLAGc5d4c47f8 [2020-09-24 15:46:41,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0478256af/2537736dc5aa49d4a71ad0edb46fce0d [2020-09-24 15:46:41,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:46:41,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:46:41,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:46:41,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:46:41,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:46:41,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:46:41" (1/1) ... [2020-09-24 15:46:41,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177c5926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:41, skipping insertion in model container [2020-09-24 15:46:41,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:46:41" (1/1) ... [2020-09-24 15:46:41,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:46:41,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:46:41,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:46:41,967 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:46:42,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:46:42,095 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:46:42,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42 WrapperNode [2020-09-24 15:46:42,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:46:42,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:46:42,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:46:42,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:46:42,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42" (1/1) ... [2020-09-24 15:46:42,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42" (1/1) ... [2020-09-24 15:46:42,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42" (1/1) ... [2020-09-24 15:46:42,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42" (1/1) ... [2020-09-24 15:46:42,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42" (1/1) ... [2020-09-24 15:46:42,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42" (1/1) ... [2020-09-24 15:46:42,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42" (1/1) ... [2020-09-24 15:46:42,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:46:42,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:46:42,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:46:42,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:46:42,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:46:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:46:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:46:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 15:46:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 15:46:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 15:46:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 15:46:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 15:46:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 15:46:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 15:46:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 15:46:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 15:46:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 15:46:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 15:46:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 15:46:42,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 15:46:42,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 15:46:42,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 15:46:42,292 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 15:46:42,292 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 15:46:42,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 15:46:42,293 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 15:46:42,293 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 15:46:42,293 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 15:46:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 15:46:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 15:46:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 15:46:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 15:46:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 15:46:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 15:46:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 15:46:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 15:46:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:46:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 15:46:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 15:46:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 15:46:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 15:46:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:46:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:46:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:46:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 15:46:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 15:46:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:46:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:46:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 15:46:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:46:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:46:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:46:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:46:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 15:46:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:46:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 15:46:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 15:46:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:46:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 15:46:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 15:46:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:46:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 15:46:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 15:46:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 15:46:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 15:46:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 15:46:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 15:46:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 15:46:42,300 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 15:46:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 15:46:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 15:46:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 15:46:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 15:46:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 15:46:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 15:46:42,301 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 15:46:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 15:46:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:46:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 15:46:42,302 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 15:46:42,303 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 15:46:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 15:46:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 15:46:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 15:46:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 15:46:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 15:46:42,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 15:46:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 15:46:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:46:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 15:46:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:46:42,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:46:42,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:46:43,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:46:43,494 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 15:46:43,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:46:43 BoogieIcfgContainer [2020-09-24 15:46:43,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:46:43,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:46:43,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:46:43,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:46:43,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:46:41" (1/3) ... [2020-09-24 15:46:43,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f7162b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:46:43, skipping insertion in model container [2020-09-24 15:46:43,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:42" (2/3) ... [2020-09-24 15:46:43,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f7162b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:46:43, skipping insertion in model container [2020-09-24 15:46:43,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:46:43" (3/3) ... [2020-09-24 15:46:43,513 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2020-09-24 15:46:43,526 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:46:43,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:46:43,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:46:43,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:46:43,605 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:46:43,605 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:46:43,606 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:46:43,606 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:46:43,606 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:46:43,606 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:46:43,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:46:43,654 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-09-24 15:46:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 15:46:43,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:46:43,692 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] [2020-09-24 15:46:43,693 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:46:43,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:46:43,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1231247222, now seen corresponding path program 1 times [2020-09-24 15:46:43,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:46:43,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724297957] [2020-09-24 15:46:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:46:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:44,154 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:44,155 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:44,155 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:44,155 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:44,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 15:46:44,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:44,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:46:44,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 15:46:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:44,712 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:46:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:46:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:44,767 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:44,768 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:44,768 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:44,768 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:44,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:46:44,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:44,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:44,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:44,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:46:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:44,855 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:44,856 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:44,856 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:44,856 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:44,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:44,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:44,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:44,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:44,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:44,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:44,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:46:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:44,862 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:44,862 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:44,862 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:44,862 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:44,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:44,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:44,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:46:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:44,868 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:44,868 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:44,868 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:44,869 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:44,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:44,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:44,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:44,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:44,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:44,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:44,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:46:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:44,875 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:44,875 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:44,876 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:44,876 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:44,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:44,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:44,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:44,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:44,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:44,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:44,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:46:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:44,882 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:44,882 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:44,882 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:44,882 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:44,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:44,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:44,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:44,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:44,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:44,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:44,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:44,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:46:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:44,889 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:44,889 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:44,889 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:44,889 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:44,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:44,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:44,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:44,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:44,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:44,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:44,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:44,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:46:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:44,895 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:44,896 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:44,896 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:44,896 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:44,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:44,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:44,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:44,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:44,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:44,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:46:44,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724297957] [2020-09-24 15:46:44,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:46:44,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 15:46:44,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361827716] [2020-09-24 15:46:44,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 15:46:44,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:46:44,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 15:46:44,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:46:44,962 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 3 states. [2020-09-24 15:46:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:46:46,302 INFO L93 Difference]: Finished difference Result 435 states and 517 transitions. [2020-09-24 15:46:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 15:46:46,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 15:46:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:46:46,325 INFO L225 Difference]: With dead ends: 435 [2020-09-24 15:46:46,326 INFO L226 Difference]: Without dead ends: 274 [2020-09-24 15:46:46,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:46:46,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-24 15:46:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 235. [2020-09-24 15:46:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-24 15:46:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2020-09-24 15:46:46,436 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 153 [2020-09-24 15:46:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:46:46,437 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2020-09-24 15:46:46,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 15:46:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2020-09-24 15:46:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 15:46:46,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:46:46,442 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] [2020-09-24 15:46:46,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:46:46,443 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:46:46,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:46:46,444 INFO L82 PathProgramCache]: Analyzing trace with hash -606501768, now seen corresponding path program 1 times [2020-09-24 15:46:46,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:46:46,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280805884] [2020-09-24 15:46:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:46:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:46,573 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:46,574 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:46,574 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:46,574 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:46,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 15:46:46,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:46,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:46:46,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 15:46:46,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 15:46:46,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:46,975 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:46:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:46:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:46,991 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:46,992 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:46,992 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:46,992 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:46,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:46:46,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:46,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:46,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:46,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:46,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:47,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:46:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:47,042 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:47,042 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:47,042 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:47,042 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:47,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:47,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:47,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:47,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:47,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:47,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:47,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:46:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:47,047 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:47,047 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:47,047 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:47,048 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:47,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:47,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:47,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:47,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:47,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:47,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:47,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:46:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:47,052 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:47,053 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:47,053 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:47,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:47,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:47,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:47,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:47,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:47,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:47,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:46:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:47,059 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:47,060 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:47,060 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:47,060 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:47,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:47,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:47,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:47,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:47,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:47,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:47,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 15:46:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:47,066 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:47,066 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:47,066 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:47,067 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:47,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:47,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:47,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:47,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:47,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:47,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 15:46:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:47,073 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:47,073 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:47,073 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:47,074 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:47,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:47,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:47,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:47,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:47,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:47,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 15:46:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:47,080 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:47,080 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:47,081 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:47,081 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:47,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:47,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:47,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:46:47,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280805884] [2020-09-24 15:46:47,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:46:47,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:46:47,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857338244] [2020-09-24 15:46:47,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:46:47,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:46:47,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:46:47,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:46:47,154 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand 4 states. [2020-09-24 15:46:47,774 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:46:48,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:46:48,562 INFO L93 Difference]: Finished difference Result 352 states and 392 transitions. [2020-09-24 15:46:48,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:46:48,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 15:46:48,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:46:48,568 INFO L225 Difference]: With dead ends: 352 [2020-09-24 15:46:48,568 INFO L226 Difference]: Without dead ends: 257 [2020-09-24 15:46:48,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:46:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-24 15:46:48,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 225. [2020-09-24 15:46:48,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-24 15:46:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 240 transitions. [2020-09-24 15:46:48,610 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 240 transitions. Word has length 154 [2020-09-24 15:46:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:46:48,611 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 240 transitions. [2020-09-24 15:46:48,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:46:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 240 transitions. [2020-09-24 15:46:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 15:46:48,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:46:48,613 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] [2020-09-24 15:46:48,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:46:48,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:46:48,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:46:48,614 INFO L82 PathProgramCache]: Analyzing trace with hash -897278278, now seen corresponding path program 1 times [2020-09-24 15:46:48,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:46:48,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170800328] [2020-09-24 15:46:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:46:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:48,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-24 15:46:48,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:48,684 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:48,687 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:48,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 15:46:48,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:46:48,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 15:46:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 15:46:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:48,975 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:46:48,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:46:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:49,023 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:49,023 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:49,023 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:49,023 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:49,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:46:49,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:49,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:49,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 15:46:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:46:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:49,114 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:49,114 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:49,114 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:49,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:49,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:49,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:49,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:49,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:49,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:49,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:46:49,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:46:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:49,120 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:49,120 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:49,121 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:49,121 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:49,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:49,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:49,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:49,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:49,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:49,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:49,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:46:49,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:49,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:46:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:49,126 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:49,127 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:49,127 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:49,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:49,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:49,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:49,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:46:49,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:46:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:49,133 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:49,133 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:49,134 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:49,134 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:49,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:49,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:49,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:46:49,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:46:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:49,139 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:49,139 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:49,139 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:49,140 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:49,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:49,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:49,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:49,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:49,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:46:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:49,145 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:49,145 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:49,145 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:49,145 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:49,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:49,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:49,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:49,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-24 15:46:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:49,150 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:49,151 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:49,151 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:49,151 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:49,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:49,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:49,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:49,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:49,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:49,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:49,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:49,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:46:49,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170800328] [2020-09-24 15:46:49,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:46:49,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:46:49,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848066029] [2020-09-24 15:46:49,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:46:49,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:46:49,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:46:49,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:46:49,184 INFO L87 Difference]: Start difference. First operand 225 states and 240 transitions. Second operand 4 states. [2020-09-24 15:46:49,657 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:46:50,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:46:50,371 INFO L93 Difference]: Finished difference Result 372 states and 417 transitions. [2020-09-24 15:46:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:46:50,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-24 15:46:50,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:46:50,376 INFO L225 Difference]: With dead ends: 372 [2020-09-24 15:46:50,376 INFO L226 Difference]: Without dead ends: 257 [2020-09-24 15:46:50,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:46:50,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-09-24 15:46:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 225. [2020-09-24 15:46:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-24 15:46:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 239 transitions. [2020-09-24 15:46:50,416 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 239 transitions. Word has length 163 [2020-09-24 15:46:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:46:50,416 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 239 transitions. [2020-09-24 15:46:50,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:46:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2020-09-24 15:46:50,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 15:46:50,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:46:50,419 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] [2020-09-24 15:46:50,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:46:50,420 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:46:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:46:50,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1060139161, now seen corresponding path program 1 times [2020-09-24 15:46:50,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:46:50,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462192120] [2020-09-24 15:46:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:46:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:50,514 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:50,515 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:50,515 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:50,515 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:50,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 15:46:50,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 15:46:50,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:46:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 15:46:50,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 15:46:50,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:50,904 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:46:50,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:46:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:50,954 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:50,955 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:50,955 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:50,956 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:50,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:46:50,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:50,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:50,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 15:46:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:51,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:46:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:51,035 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:51,036 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:51,036 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:51,036 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:51,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:51,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:51,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:51,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:46:51,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:46:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:51,043 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:51,043 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:51,044 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:51,044 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:51,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:51,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:51,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:51,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:51,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:46:51,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:51,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:46:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:51,051 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:51,052 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:51,052 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:51,053 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:51,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:51,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:46:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:46:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:51,060 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:51,061 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:51,061 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:51,061 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:51,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:51,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:51,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:51,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:51,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:46:51,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-24 15:46:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:51,079 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:51,079 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:51,079 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:51,079 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:51,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 15:46:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:51,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 15:46:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:46:51,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:46:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:51,085 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:51,085 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:51,086 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:51,086 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:51,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:46:51,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:51,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 15:46:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:51,093 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:51,094 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:51,094 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:51,095 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:51,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:51,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:51,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:46:51,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:51,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:46:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:46:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:51,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 15:46:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:51,106 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:51,106 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:51,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:51,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:51,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:51,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:51,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:46:51,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:46:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:46:51,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:46:51,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:51,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 15:46:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:46:51,147 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:46:51,147 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:46:51,147 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:46:51,148 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:46:51,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:46:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:46:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:46:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:46:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:46:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:46:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:46:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:46:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:46:51,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462192120] [2020-09-24 15:46:51,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:46:51,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:46:51,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149683827] [2020-09-24 15:46:51,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:46:51,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:46:51,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:46:51,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:46:51,233 INFO L87 Difference]: Start difference. First operand 225 states and 239 transitions. Second operand 9 states. [2020-09-24 15:46:52,029 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:46:53,790 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:46:54,119 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:46:54,518 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:46:54,866 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:46:55,235 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:46:55,560 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:46:55,870 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:46:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:46:56,736 INFO L93 Difference]: Finished difference Result 528 states and 625 transitions. [2020-09-24 15:46:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:46:56,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-24 15:46:56,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:46:56,742 INFO L225 Difference]: With dead ends: 528 [2020-09-24 15:46:56,742 INFO L226 Difference]: Without dead ends: 413 [2020-09-24 15:46:56,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:46:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-24 15:46:56,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 335. [2020-09-24 15:46:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-09-24 15:46:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 367 transitions. [2020-09-24 15:46:56,801 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 367 transitions. Word has length 171 [2020-09-24 15:46:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:46:56,801 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 367 transitions. [2020-09-24 15:46:56,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:46:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 367 transitions. [2020-09-24 15:46:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 15:46:56,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:46:56,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:46:56,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:46:56,806 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:46:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:46:56,806 INFO L82 PathProgramCache]: Analyzing trace with hash 558510229, now seen corresponding path program 1 times [2020-09-24 15:46:56,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:46:56,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026731554] [2020-09-24 15:46:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:46:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:46:56,907 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:46:56,907 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:46:56,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:46:56,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:46:56 BoogieIcfgContainer [2020-09-24 15:46:56,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:46:56,948 INFO L168 Benchmark]: Toolchain (without parser) took 15625.58 ms. Allocated memory was 144.2 MB in the beginning and 481.8 MB in the end (delta: 337.6 MB). Free memory was 101.5 MB in the beginning and 121.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 317.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:46:56,949 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 15:46:56,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.45 ms. Allocated memory was 144.2 MB in the beginning and 205.5 MB in the end (delta: 61.3 MB). Free memory was 100.8 MB in the beginning and 174.3 MB in the end (delta: -73.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:46:56,951 INFO L168 Benchmark]: Boogie Preprocessor took 107.26 ms. Allocated memory is still 205.5 MB. Free memory was 174.3 MB in the beginning and 169.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:46:56,952 INFO L168 Benchmark]: RCFGBuilder took 1298.04 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 169.7 MB in the beginning and 180.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:46:56,953 INFO L168 Benchmark]: TraceAbstraction took 13442.08 ms. Allocated memory was 237.5 MB in the beginning and 481.8 MB in the end (delta: 244.3 MB). Free memory was 180.0 MB in the beginning and 121.5 MB in the end (delta: 58.5 MB). Peak memory consumption was 302.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:46:56,957 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.45 ms. Allocated memory was 144.2 MB in the beginning and 205.5 MB in the end (delta: 61.3 MB). Free memory was 100.8 MB in the beginning and 174.3 MB in the end (delta: -73.5 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.26 ms. Allocated memory is still 205.5 MB. Free memory was 174.3 MB in the beginning and 169.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1298.04 ms. Allocated memory was 205.5 MB in the beginning and 237.5 MB in the end (delta: 32.0 MB). Free memory was 169.7 MB in the beginning and 180.0 MB in the end (delta: -10.3 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13442.08 ms. Allocated memory was 237.5 MB in the beginning and 481.8 MB in the end (delta: 244.3 MB). Free memory was 180.0 MB in the beginning and 121.5 MB in the end (delta: 58.5 MB). Peak memory consumption was 302.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L735] int cleanupTimeShifts = 4; [L811] int retValue_acc ; [L812] int tmp ; [L816] FCALL select_helpers() [L817] FCALL select_features() [L818] CALL, EXPR valid_product() [L860] int retValue_acc ; [L863] retValue_acc = 1 [L864] return (retValue_acc); [L818] RET, EXPR valid_product() [L818] tmp = valid_product() [L820] COND TRUE \read(tmp) [L822] FCALL setup() [L823] CALL runTest() [L802] CALL test() [L514] int splverifierCounter ; [L515] int tmp ; [L516] int tmp___0 ; [L517] int tmp___1 ; [L518] int tmp___2 ; [L521] splverifierCounter = 0 [L523] COND TRUE 1 [L525] COND TRUE splverifierCounter < 4 [L531] tmp = __VERIFIER_nondet_int() [L533] COND TRUE \read(tmp) [L535] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L535] RET waterRise() [L541] tmp___0 = __VERIFIER_nondet_int() [L543] COND FALSE !(\read(tmp___0)) [L551] tmp___2 = __VERIFIER_nondet_int() [L553] COND TRUE \read(tmp___2) [L566] CALL timeShift() [L590] COND FALSE !(\read(pumpRunning)) [L597] COND TRUE \read(systemActive) [L599] CALL processEnvironment() [L619] int tmp ; [L622] COND FALSE !(\read(pumpRunning)) [L637] FCALL processEnvironment__wrappee__base() [L599] RET processEnvironment() [L605] CALL __utac_acc__Specification3_spec__1() [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L876] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L876] RET, EXPR isMethaneLevelCritical() [L876] tmp = isMethaneLevelCritical() [L878] COND FALSE !(\read(tmp)) [L882] CALL, EXPR getWaterLevel() [L484] int retValue_acc ; [L487] retValue_acc = waterLevel [L488] return (retValue_acc); [L882] RET, EXPR getWaterLevel() [L882] tmp___0 = getWaterLevel() [L884] COND TRUE tmp___0 == 2 [L886] CALL, EXPR isPumpRunning() [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); [L886] RET, EXPR isPumpRunning() [L886] tmp___1 = isPumpRunning() [L888] COND FALSE !(\read(tmp___1)) [L892] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 609 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 862 SDtfs, 894 SDslu, 721 SDs, 0 SdLazy, 1687 SolverSat, 269 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 181 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 817 NumberOfCodeBlocks, 817 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 637 ConstructedInterpolants, 0 QuantifiedInterpolants, 252216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...