/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:46:56,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:46:56,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:46:56,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:46:56,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:46:56,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:46:56,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:46:56,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:46:56,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:46:56,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:46:56,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:46:56,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:46:56,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:46:56,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:46:56,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:46:56,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:46:56,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:46:56,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:46:56,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:46:56,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:46:56,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:46:56,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:46:56,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:46:56,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:46:56,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:46:56,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:46:56,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:46:56,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:46:56,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:46:56,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:46:56,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:46:56,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:46:56,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:46:56,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:46:56,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:46:56,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:46:56,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:46:56,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:46:56,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:46:56,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:46:56,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:46:56,746 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 15:46:56,772 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:46:56,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:46:56,774 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:46:56,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:46:56,774 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:46:56,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:46:56,775 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:46:56,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:46:56,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:46:56,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:46:56,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:46:56,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:46:56,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:46:56,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:46:56,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:46:56,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:46:56,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:46:56,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:46:56,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:46:56,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:46:56,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:46:56,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:46:56,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:46:56,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:46:56,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:46:56,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:46:56,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:46:56,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:46:56,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:46:56,779 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 15:46:57,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:46:57,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:46:57,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:46:57,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:46:57,266 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:46:57,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c [2020-09-24 15:46:57,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a25c602e/a35841c0519c47d8a5a6580d51d37928/FLAG293045bac [2020-09-24 15:46:57,985 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:46:57,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product28.cil.c [2020-09-24 15:46:58,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a25c602e/a35841c0519c47d8a5a6580d51d37928/FLAG293045bac [2020-09-24 15:46:58,249 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a25c602e/a35841c0519c47d8a5a6580d51d37928 [2020-09-24 15:46:58,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:46:58,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:46:58,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:46:58,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:46:58,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:46:58,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:46:58" (1/1) ... [2020-09-24 15:46:58,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:58, skipping insertion in model container [2020-09-24 15:46:58,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:46:58" (1/1) ... [2020-09-24 15:46:58,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:46:58,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:46:58,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:46:58,906 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:46:58,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:46:59,028 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:46:59,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59 WrapperNode [2020-09-24 15:46:59,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:46:59,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:46:59,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:46:59,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:46:59,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59" (1/1) ... [2020-09-24 15:46:59,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59" (1/1) ... [2020-09-24 15:46:59,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59" (1/1) ... [2020-09-24 15:46:59,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59" (1/1) ... [2020-09-24 15:46:59,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59" (1/1) ... [2020-09-24 15:46:59,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59" (1/1) ... [2020-09-24 15:46:59,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59" (1/1) ... [2020-09-24 15:46:59,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:46:59,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:46:59,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:46:59,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:46:59,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59" (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 15:46:59,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:46:59,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:46:59,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 15:46:59,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 15:46:59,245 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 15:46:59,246 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 15:46:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 15:46:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 15:46:59,248 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 15:46:59,248 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 15:46:59,248 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 15:46:59,248 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 15:46:59,248 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 15:46:59,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 15:46:59,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 15:46:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 15:46:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 15:46:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 15:46:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 15:46:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 15:46:59,252 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 15:46:59,252 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 15:46:59,252 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 15:46:59,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 15:46:59,253 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 15:46:59,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 15:46:59,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 15:46:59,254 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 15:46:59,254 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 15:46:59,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 15:46:59,255 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 15:46:59,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:46:59,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 15:46:59,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:46:59,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 15:46:59,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 15:46:59,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 15:46:59,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 15:46:59,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 15:46:59,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 15:46:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:46:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:46:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 15:46:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 15:46:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 15:46:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 15:46:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 15:46:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 15:46:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 15:46:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 15:46:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 15:46:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 15:46:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 15:46:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 15:46:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 15:46:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 15:46:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 15:46:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 15:46:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-24 15:46:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 15:46:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 15:46:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 15:46:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 15:46:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 15:46:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:46:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 15:46:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 15:46:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 15:46:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 15:46:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 15:46:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 15:46:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 15:46:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 15:46:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:46:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 15:46:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 15:46:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:46:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:46:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 15:46:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:46:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:46:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:46:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:46:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 15:46:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:46:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 15:46:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 15:46:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:46:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 15:46:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 15:46:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 15:46:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:46:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:46:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:47:00,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:47:00,447 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 15:47:00,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:00 BoogieIcfgContainer [2020-09-24 15:47:00,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:47:00,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:47:00,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:47:00,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:47:00,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:46:58" (1/3) ... [2020-09-24 15:47:00,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465b2407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:00, skipping insertion in model container [2020-09-24 15:47:00,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:46:59" (2/3) ... [2020-09-24 15:47:00,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465b2407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:47:00, skipping insertion in model container [2020-09-24 15:47:00,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:47:00" (3/3) ... [2020-09-24 15:47:00,464 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product28.cil.c [2020-09-24 15:47:00,476 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:47:00,488 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:47:00,512 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:47:00,554 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:47:00,554 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:47:00,554 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:47:00,554 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:47:00,555 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:47:00,555 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:47:00,555 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:47:00,555 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:47:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2020-09-24 15:47:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 15:47:00,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:00,611 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 15:47:00,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:00,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1905765184, now seen corresponding path program 1 times [2020-09-24 15:47:00,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:00,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687369601] [2020-09-24 15:47:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,063 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,064 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,064 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,064 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 15:47:01,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:47:01,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 15:47:01,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,584 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,605 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,606 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,606 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,606 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:01,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,758 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,758 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,759 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:01,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:01,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,767 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,767 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,767 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,768 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:01,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:01,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,775 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,775 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,775 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,775 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:01,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:01,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,782 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,783 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,783 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,783 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:01,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:01,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:47:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,790 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,791 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,791 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:01,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:01,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 15:47:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,800 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,801 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,801 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,802 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:01,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:01,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:01,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-24 15:47:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:01,811 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:01,811 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:01,811 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:01,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:01,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:01,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:01,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:01,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:01,847 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 15:47:01,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687369601] [2020-09-24 15:47:01,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:01,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 15:47:01,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851963034] [2020-09-24 15:47:01,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 15:47:01,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:01,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 15:47:01,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:01,888 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2020-09-24 15:47:03,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:03,301 INFO L93 Difference]: Finished difference Result 458 states and 546 transitions. [2020-09-24 15:47:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 15:47:03,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-24 15:47:03,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:03,325 INFO L225 Difference]: With dead ends: 458 [2020-09-24 15:47:03,325 INFO L226 Difference]: Without dead ends: 287 [2020-09-24 15:47:03,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 15:47:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-24 15:47:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 245. [2020-09-24 15:47:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-24 15:47:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 265 transitions. [2020-09-24 15:47:03,458 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 265 transitions. Word has length 153 [2020-09-24 15:47:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:03,459 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 265 transitions. [2020-09-24 15:47:03,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 15:47:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 265 transitions. [2020-09-24 15:47:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 15:47:03,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:03,465 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 15:47:03,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:47:03,466 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash 319840535, now seen corresponding path program 1 times [2020-09-24 15:47:03,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:03,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995198793] [2020-09-24 15:47:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:03,546 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:03,546 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:03,547 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:03,547 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:03,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 15:47:03,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:03,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:47:03,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:03,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:03,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 15:47:03,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 15:47:03,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:03,903 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:03,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:03,918 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:03,919 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:03,919 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:03,919 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:03,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:03,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:03,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:03,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:03,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:03,966 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:03,967 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:03,967 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:03,967 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:03,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:03,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:03,973 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:03,973 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:03,973 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:03,974 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:03,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:03,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:03,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:03,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:03,979 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:03,979 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:03,979 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:03,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:03,984 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:03,985 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:03,985 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:03,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 15:47:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:03,990 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:03,990 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:03,990 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:03,990 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:03,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:03,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:03,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:03,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:03,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 15:47:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:03,996 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:03,997 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:03,997 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:03,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:03,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:03,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:03,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:03,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:03,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:03,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:03,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:04,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 15:47:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:04,003 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:04,004 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:04,004 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:04,004 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:04,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:04,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:04,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:04,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:04,095 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 15:47:04,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995198793] [2020-09-24 15:47:04,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:04,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:47:04,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914904828] [2020-09-24 15:47:04,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:47:04,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:04,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:47:04,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:47:04,104 INFO L87 Difference]: Start difference. First operand 245 states and 265 transitions. Second operand 4 states. [2020-09-24 15:47:04,809 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:47:05,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:05,704 INFO L93 Difference]: Finished difference Result 365 states and 409 transitions. [2020-09-24 15:47:05,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:47:05,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-24 15:47:05,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:05,708 INFO L225 Difference]: With dead ends: 365 [2020-09-24 15:47:05,709 INFO L226 Difference]: Without dead ends: 270 [2020-09-24 15:47:05,711 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 15:47:05,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-09-24 15:47:05,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 235. [2020-09-24 15:47:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-09-24 15:47:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 252 transitions. [2020-09-24 15:47:05,751 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 252 transitions. Word has length 154 [2020-09-24 15:47:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:05,752 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 252 transitions. [2020-09-24 15:47:05,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:47:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 252 transitions. [2020-09-24 15:47:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 15:47:05,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:05,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:05,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:47:05,756 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:05,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:05,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2018801783, now seen corresponding path program 1 times [2020-09-24 15:47:05,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:05,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739220478] [2020-09-24 15:47:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:05,824 FATAL L256 erpolLogProxyWrapper]: Difference in size: 5 [2020-09-24 15:47:05,825 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -42 [2020-09-24 15:47:05,825 FATAL L256 erpolLogProxyWrapper]: Difference in width: 42 [2020-09-24 15:47:05,825 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:05,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 15:47:05,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:05,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:05,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-24 15:47:05,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:47:05,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:06,103 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:06,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:06,114 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:06,114 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:06,114 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:06,115 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:06,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:06,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:06,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:06,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:06,158 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:06,158 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:06,158 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:06,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:06,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:06,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:06,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:06,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:06,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:06,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:06,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:06,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:06,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:06,163 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:06,163 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:06,163 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:06,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:06,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:06,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:06,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:06,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:06,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:06,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:06,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:06,168 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:06,168 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:06,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:06,169 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:06,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:06,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:06,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:06,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:06,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:06,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:06,174 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:06,174 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:06,175 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:06,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:06,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 15:47:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:06,193 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:06,193 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:06,194 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:06,194 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 15:47:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:06,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:06,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 15:47:06,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:06,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 15:47:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:06,201 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:06,201 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:06,201 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:06,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:06,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:06,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:06,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:06,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:06,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:06,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:06,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:06,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 15:47:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:06,208 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:06,209 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:06,209 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:06,209 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:06,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:06,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:06,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:06,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:06,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:06,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-24 15:47:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:06,216 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:06,216 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:06,216 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:06,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:06,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:06,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:06,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:06,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:06,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:06,295 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 15:47:06,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739220478] [2020-09-24 15:47:06,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:06,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:47:06,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704962799] [2020-09-24 15:47:06,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:47:06,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:06,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:47:06,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:47:06,298 INFO L87 Difference]: Start difference. First operand 235 states and 252 transitions. Second operand 5 states. [2020-09-24 15:47:06,886 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:08,748 INFO L93 Difference]: Finished difference Result 551 states and 637 transitions. [2020-09-24 15:47:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:47:08,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-24 15:47:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:08,762 INFO L225 Difference]: With dead ends: 551 [2020-09-24 15:47:08,762 INFO L226 Difference]: Without dead ends: 426 [2020-09-24 15:47:08,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:47:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-09-24 15:47:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 350. [2020-09-24 15:47:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-09-24 15:47:08,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 385 transitions. [2020-09-24 15:47:08,863 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 385 transitions. Word has length 167 [2020-09-24 15:47:08,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:08,865 INFO L479 AbstractCegarLoop]: Abstraction has 350 states and 385 transitions. [2020-09-24 15:47:08,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:47:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 385 transitions. [2020-09-24 15:47:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 15:47:08,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:08,869 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] [2020-09-24 15:47:08,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:47:08,869 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:08,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:08,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1851726168, now seen corresponding path program 1 times [2020-09-24 15:47:08,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:08,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240864182] [2020-09-24 15:47:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,009 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-24 15:47:09,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 15:47:09,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 15:47:09,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-24 15:47:09,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 15:47:09,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:09,424 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 15:47:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:47:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,475 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,476 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,476 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,477 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 15:47:09,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:47:09,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 15:47:09,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:09,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 15:47:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,561 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,561 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,561 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,562 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:09,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:09,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:09,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:09,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:47:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,567 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,567 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,568 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,568 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:09,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:09,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:09,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:09,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:09,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 15:47:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,574 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,574 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,575 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,575 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:09,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:47:09,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:09,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 15:47:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,581 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,581 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,581 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,582 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:47:09,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:09,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 15:47:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:09,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 15:47:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,605 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,605 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,605 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,606 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 15:47:09,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:09,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:09,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:47:09,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:47:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-24 15:47:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,621 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,621 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,621 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,622 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:09,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:09,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:47:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:09,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:09,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-24 15:47:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,640 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,640 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,640 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,641 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:09,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:47:09,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:47:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:47:09,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:47:09,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:09,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-24 15:47:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:47:09,671 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:47:09,671 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:47:09,671 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:47:09,672 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:47:09,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:47:09,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:47:09,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:47:09,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:47:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:47:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:47:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:47:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:47:09,713 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 15:47:09,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240864182] [2020-09-24 15:47:09,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:47:09,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:47:09,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184970643] [2020-09-24 15:47:09,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:47:09,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:47:09,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:47:09,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:47:09,716 INFO L87 Difference]: Start difference. First operand 350 states and 385 transitions. Second operand 9 states. [2020-09-24 15:47:10,216 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:12,065 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:12,388 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:12,793 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:13,218 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 15:47:13,547 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:47:13,863 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:14,186 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 15:47:15,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:47:15,059 INFO L93 Difference]: Finished difference Result 924 states and 1111 transitions. [2020-09-24 15:47:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:47:15,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-24 15:47:15,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:47:15,066 INFO L225 Difference]: With dead ends: 924 [2020-09-24 15:47:15,066 INFO L226 Difference]: Without dead ends: 684 [2020-09-24 15:47:15,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:47:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-09-24 15:47:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 583. [2020-09-24 15:47:15,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-09-24 15:47:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 661 transitions. [2020-09-24 15:47:15,157 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 661 transitions. Word has length 172 [2020-09-24 15:47:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:47:15,158 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 661 transitions. [2020-09-24 15:47:15,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:47:15,158 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 661 transitions. [2020-09-24 15:47:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 15:47:15,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:47:15,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:47:15,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:47:15,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:47:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:47:15,164 INFO L82 PathProgramCache]: Analyzing trace with hash 525017164, now seen corresponding path program 1 times [2020-09-24 15:47:15,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:47:15,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609427103] [2020-09-24 15:47:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:47:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:47:15,259 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:47:15,259 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:47:15,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:47:15,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:47:15 BoogieIcfgContainer [2020-09-24 15:47:15,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:47:15,295 INFO L168 Benchmark]: Toolchain (without parser) took 17030.61 ms. Allocated memory was 138.4 MB in the beginning and 583.5 MB in the end (delta: 445.1 MB). Free memory was 100.8 MB in the beginning and 475.4 MB in the end (delta: -374.6 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:15,296 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:47:15,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.05 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 170.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:15,298 INFO L168 Benchmark]: Boogie Preprocessor took 114.05 ms. Allocated memory is still 201.3 MB. Free memory was 170.0 MB in the beginning and 165.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:15,299 INFO L168 Benchmark]: RCFGBuilder took 1310.53 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 165.1 MB in the beginning and 175.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:15,299 INFO L168 Benchmark]: TraceAbstraction took 14836.93 ms. Allocated memory was 232.8 MB in the beginning and 583.5 MB in the end (delta: 350.7 MB). Free memory was 174.0 MB in the beginning and 475.4 MB in the end (delta: -301.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:47:15,303 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 760.05 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 100.2 MB in the beginning and 170.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.05 ms. Allocated memory is still 201.3 MB. Free memory was 170.0 MB in the beginning and 165.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1310.53 ms. Allocated memory was 201.3 MB in the beginning and 232.8 MB in the end (delta: 31.5 MB). Free memory was 165.1 MB in the beginning and 175.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14836.93 ms. Allocated memory was 232.8 MB in the beginning and 583.5 MB in the end (delta: 350.7 MB). Free memory was 174.0 MB in the beginning and 475.4 MB in the end (delta: -301.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L89] int pumpRunning = 0; [L90] int systemActive = 1; [L356] int waterLevel = 1; [L357] int methaneLevelCritical = 0; [L445] int cleanupTimeShifts = 4; [L753] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L518] int retValue_acc ; [L519] int tmp ; [L523] FCALL select_helpers() [L524] FCALL select_features() [L525] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L525] RET, EXPR valid_product() [L525] tmp = valid_product() [L527] COND TRUE \read(tmp) [L529] FCALL setup() [L530] CALL runTest() [L512] CALL test() [L287] int splverifierCounter ; [L288] int tmp ; [L289] int tmp___0 ; [L290] int tmp___1 ; [L291] int tmp___2 ; [L294] splverifierCounter = 0 [L296] COND TRUE 1 [L298] COND TRUE splverifierCounter < 4 [L304] tmp = __VERIFIER_nondet_int() [L306] COND TRUE \read(tmp) [L308] CALL waterRise() [L374] COND TRUE waterLevel < 2 [L375] waterLevel = waterLevel + 1 [L308] RET waterRise() [L314] tmp___0 = __VERIFIER_nondet_int() [L316] COND FALSE !(\read(tmp___0)) [L324] tmp___2 = __VERIFIER_nondet_int() [L326] COND FALSE !(\read(tmp___2)) [L332] tmp___1 = __VERIFIER_nondet_int() [L334] COND TRUE \read(tmp___1) [L336] CALL stopSystem() [L263] COND FALSE !(\read(pumpRunning)) [L270] systemActive = 0 [L336] RET stopSystem() [L343] CALL timeShift() [L97] COND FALSE !(\read(pumpRunning)) [L104] COND FALSE !(\read(systemActive)) [L112] CALL __utac_acc__Specification3_spec__1() [L551] int tmp ; [L552] int tmp___0 ; [L553] int tmp___1 ; [L557] CALL, EXPR isMethaneLevelCritical() [L395] int retValue_acc ; [L398] retValue_acc = methaneLevelCritical [L399] return (retValue_acc); [L557] RET, EXPR isMethaneLevelCritical() [L557] tmp = isMethaneLevelCritical() [L559] COND FALSE !(\read(tmp)) [L563] CALL, EXPR getWaterLevel() [L427] int retValue_acc ; [L430] retValue_acc = waterLevel [L431] return (retValue_acc); [L563] RET, EXPR getWaterLevel() [L563] tmp___0 = getWaterLevel() [L565] COND TRUE tmp___0 == 2 [L567] CALL, EXPR isPumpRunning() [L196] int retValue_acc ; [L199] retValue_acc = pumpRunning [L200] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___1 = isPumpRunning() [L569] COND FALSE !(\read(tmp___1)) [L573] CALL __automaton_fail() [L545] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 628 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 953 SDtfs, 1117 SDslu, 868 SDs, 0 SdLazy, 2003 SolverSat, 368 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=583occurred 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: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 254 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 823 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 245972 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...