/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:22:41,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:22:41,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:22:41,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:22:41,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:22:41,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:22:41,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:22:41,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:22:41,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:22:41,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:22:41,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:22:41,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:22:41,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:22:41,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:22:41,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:22:41,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:22:41,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:22:41,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:22:41,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:22:41,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:22:41,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:22:41,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:22:41,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:22:41,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:22:41,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:22:41,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:22:41,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:22:41,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:22:41,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:22:41,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:22:41,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:22:41,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:22:41,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:22:41,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:22:41,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:22:41,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:22:41,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:22:41,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:22:41,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:22:41,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:22:41,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:22:41,746 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 [2020-08-21 16:22:41,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:22:41,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:22:41,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:22:41,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:22:41,785 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:22:41,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:22:41,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:22:41,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:22:41,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:22:41,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:22:41,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:22:41,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:22:41,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:22:41,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:22:41,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:22:41,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:22:41,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:22:41,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:22:41,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:22:41,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:22:41,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:22:41,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:22:41,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:22:41,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:22:41,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:22:41,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:22:41,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:22:41,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:22:41,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:22:41,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:22:42,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:22:42,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:22:42,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:22:42,148 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:22:42,151 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:22:42,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-21 16:22:42,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c2292069/ad7546106ffe45a6bb8ce62e7b046bab/FLAGef75efbc4 [2020-08-21 16:22:42,793 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:22:42,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-21 16:22:42,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c2292069/ad7546106ffe45a6bb8ce62e7b046bab/FLAGef75efbc4 [2020-08-21 16:22:43,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c2292069/ad7546106ffe45a6bb8ce62e7b046bab [2020-08-21 16:22:43,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:22:43,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:22:43,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:22:43,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:22:43,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:22:43,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bbc2ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43, skipping insertion in model container [2020-08-21 16:22:43,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:22:43,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:22:43,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:22:43,564 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:22:43,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:22:43,698 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:22:43,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43 WrapperNode [2020-08-21 16:22:43,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:22:43,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:22:43,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:22:43,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:22:43,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43" (1/1) ... [2020-08-21 16:22:43,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:22:43,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:22:43,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:22:43,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:22:43,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43" (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 [2020-08-21 16:22:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:22:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:22:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:22:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:22:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:22:43,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:22:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:22:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:22:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:22:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:22:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 16:22:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:22:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 16:22:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:22:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:22:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:22:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:22:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:22:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:22:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 16:22:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 16:22:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 16:22:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:22:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:22:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:22:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:22:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:22:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:22:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:22:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:22:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 16:22:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:22:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:22:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:22:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:22:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:22:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:22:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:22:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:22:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:22:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:22:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:22:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:22:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 16:22:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:22:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:22:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:22:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:22:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:22:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:22:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:22:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:22:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:22:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:22:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:22:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 16:22:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:22:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:22:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:22:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:22:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:22:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 16:22:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 16:22:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 16:22:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:22:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:22:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:22:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:22:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 16:22:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 16:22:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:22:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 16:22:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:22:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:22:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:22:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:22:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:22:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:22:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:22:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:22:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:22:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:22:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:22:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:22:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:22:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:22:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:22:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:22:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:22:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:22:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:22:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:22:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:22:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:22:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:22:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:22:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:22:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:22:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:22:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:22:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:22:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:22:45,035 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:22:45,038 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:22:45,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:22:45 BoogieIcfgContainer [2020-08-21 16:22:45,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:22:45,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:22:45,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:22:45,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:22:45,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:22:43" (1/3) ... [2020-08-21 16:22:45,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d365a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:22:45, skipping insertion in model container [2020-08-21 16:22:45,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:22:43" (2/3) ... [2020-08-21 16:22:45,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d365a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:22:45, skipping insertion in model container [2020-08-21 16:22:45,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:22:45" (3/3) ... [2020-08-21 16:22:45,060 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2020-08-21 16:22:45,071 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:22:45,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:22:45,094 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:22:45,117 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:22:45,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:22:45,117 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:22:45,117 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:22:45,118 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:22:45,118 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:22:45,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:22:45,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:22:45,142 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-08-21 16:22:45,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 16:22:45,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:22:45,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:22:45,156 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:22:45,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:22:45,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1153750625, now seen corresponding path program 1 times [2020-08-21 16:22:45,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:22:45,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979347193] [2020-08-21 16:22:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:22:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:45,859 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:22:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:22:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:45,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:22:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:45,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:22:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:22:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:45,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:22:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:22:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:22:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:22:45,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979347193] [2020-08-21 16:22:46,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:22:46,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:22:46,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417261560] [2020-08-21 16:22:46,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:22:46,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:22:46,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:22:46,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:22:46,027 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 3 states. [2020-08-21 16:22:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:22:47,435 INFO L93 Difference]: Finished difference Result 380 states and 494 transitions. [2020-08-21 16:22:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:22:47,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 16:22:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:22:47,454 INFO L225 Difference]: With dead ends: 380 [2020-08-21 16:22:47,455 INFO L226 Difference]: Without dead ends: 205 [2020-08-21 16:22:47,465 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 [2020-08-21 16:22:47,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-08-21 16:22:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 166. [2020-08-21 16:22:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-21 16:22:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 198 transitions. [2020-08-21 16:22:47,634 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 198 transitions. Word has length 52 [2020-08-21 16:22:47,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:22:47,635 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 198 transitions. [2020-08-21 16:22:47,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:22:47,635 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 198 transitions. [2020-08-21 16:22:47,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 16:22:47,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:22:47,646 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] [2020-08-21 16:22:47,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:22:47,647 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:22:47,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:22:47,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2119837363, now seen corresponding path program 1 times [2020-08-21 16:22:47,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:22:47,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924994206] [2020-08-21 16:22:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:22:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:47,974 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:22:47,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:22:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:48,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:48,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:22:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:48,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:22:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:22:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:48,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:22:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:48,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:22:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:48,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:22:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:22:48,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924994206] [2020-08-21 16:22:48,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:22:48,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:22:48,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420423324] [2020-08-21 16:22:48,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:22:48,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:22:48,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:22:48,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:22:48,024 INFO L87 Difference]: Start difference. First operand 166 states and 198 transitions. Second operand 4 states. [2020-08-21 16:22:48,511 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:22:49,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:22:49,570 INFO L93 Difference]: Finished difference Result 303 states and 373 transitions. [2020-08-21 16:22:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:22:49,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 16:22:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:22:49,575 INFO L225 Difference]: With dead ends: 303 [2020-08-21 16:22:49,576 INFO L226 Difference]: Without dead ends: 189 [2020-08-21 16:22:49,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:22:49,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-21 16:22:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2020-08-21 16:22:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-21 16:22:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 186 transitions. [2020-08-21 16:22:49,632 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 186 transitions. Word has length 53 [2020-08-21 16:22:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:22:49,632 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 186 transitions. [2020-08-21 16:22:49,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:22:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 186 transitions. [2020-08-21 16:22:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 16:22:49,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:22:49,635 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] [2020-08-21 16:22:49,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:22:49,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:22:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:22:49,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1174645714, now seen corresponding path program 1 times [2020-08-21 16:22:49,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:22:49,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101484964] [2020-08-21 16:22:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:22:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:49,983 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:22:49,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:22:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:22:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:22:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:22:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:22:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:22:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:22:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:22:50,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101484964] [2020-08-21 16:22:50,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:22:50,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:22:50,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977252981] [2020-08-21 16:22:50,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:22:50,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:22:50,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:22:50,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:22:50,113 INFO L87 Difference]: Start difference. First operand 157 states and 186 transitions. Second operand 8 states. [2020-08-21 16:22:50,471 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:22:50,776 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:22:51,017 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:22:51,238 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:22:51,970 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:22:54,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:22:54,539 INFO L93 Difference]: Finished difference Result 540 states and 672 transitions. [2020-08-21 16:22:54,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:22:54,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 16:22:54,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:22:54,545 INFO L225 Difference]: With dead ends: 540 [2020-08-21 16:22:54,545 INFO L226 Difference]: Without dead ends: 407 [2020-08-21 16:22:54,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:22:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-08-21 16:22:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 334. [2020-08-21 16:22:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-21 16:22:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 407 transitions. [2020-08-21 16:22:54,634 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 407 transitions. Word has length 58 [2020-08-21 16:22:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:22:54,635 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 407 transitions. [2020-08-21 16:22:54,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:22:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 407 transitions. [2020-08-21 16:22:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 16:22:54,637 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:22:54,637 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] [2020-08-21 16:22:54,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:22:54,638 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:22:54,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:22:54,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1545438199, now seen corresponding path program 1 times [2020-08-21 16:22:54,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:22:54,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706895650] [2020-08-21 16:22:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:22:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,924 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:22:54,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:22:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:22:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:22:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:22:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:22:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:22:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:22:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 16:22:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:22:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:22:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:22:54,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706895650] [2020-08-21 16:22:55,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:22:55,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:22:55,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254707772] [2020-08-21 16:22:55,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:22:55,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:22:55,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:22:55,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:22:55,002 INFO L87 Difference]: Start difference. First operand 334 states and 407 transitions. Second operand 8 states. [2020-08-21 16:22:55,448 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:22:56,798 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:22:57,195 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:22:57,534 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:22:57,780 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:22:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:22:58,985 INFO L93 Difference]: Finished difference Result 1041 states and 1365 transitions. [2020-08-21 16:22:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 16:22:58,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 16:22:58,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:22:58,992 INFO L225 Difference]: With dead ends: 1041 [2020-08-21 16:22:58,993 INFO L226 Difference]: Without dead ends: 731 [2020-08-21 16:22:58,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:22:58,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-21 16:22:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 653. [2020-08-21 16:22:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-08-21 16:22:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 809 transitions. [2020-08-21 16:22:59,130 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 809 transitions. Word has length 63 [2020-08-21 16:22:59,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:22:59,131 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 809 transitions. [2020-08-21 16:22:59,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:22:59,131 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 809 transitions. [2020-08-21 16:22:59,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 16:22:59,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:22:59,135 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] [2020-08-21 16:22:59,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:22:59,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:22:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:22:59,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1461698211, now seen corresponding path program 1 times [2020-08-21 16:22:59,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:22:59,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484945209] [2020-08-21 16:22:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:22:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:22:59,194 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:22:59,194 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:22:59,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:22:59,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:22:59 BoogieIcfgContainer [2020-08-21 16:22:59,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:22:59,223 INFO L168 Benchmark]: Toolchain (without parser) took 16148.73 ms. Allocated memory was 142.1 MB in the beginning and 494.9 MB in the end (delta: 352.8 MB). Free memory was 105.0 MB in the beginning and 270.4 MB in the end (delta: -165.3 MB). Peak memory consumption was 187.5 MB. Max. memory is 7.1 GB. [2020-08-21 16:22:59,223 INFO L168 Benchmark]: CDTParser took 1.79 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 16:22:59,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.92 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 104.6 MB in the beginning and 172.8 MB in the end (delta: -68.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:22:59,225 INFO L168 Benchmark]: Boogie Preprocessor took 88.80 ms. Allocated memory is still 205.0 MB. Free memory was 172.8 MB in the beginning and 167.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:22:59,226 INFO L168 Benchmark]: RCFGBuilder took 1259.06 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 167.8 MB in the beginning and 186.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:22:59,227 INFO L168 Benchmark]: TraceAbstraction took 14169.83 ms. Allocated memory was 234.4 MB in the beginning and 494.9 MB in the end (delta: 260.6 MB). Free memory was 186.0 MB in the beginning and 270.4 MB in the end (delta: -84.4 MB). Peak memory consumption was 176.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:22:59,231 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.79 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.92 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 104.6 MB in the beginning and 172.8 MB in the end (delta: -68.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.80 ms. Allocated memory is still 205.0 MB. Free memory was 172.8 MB in the beginning and 167.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1259.06 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 167.8 MB in the beginning and 186.0 MB in the end (delta: -18.1 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14169.83 ms. Allocated memory was 234.4 MB in the beginning and 494.9 MB in the end (delta: 260.6 MB). Free memory was 186.0 MB in the beginning and 270.4 MB in the end (delta: -84.4 MB). Peak memory consumption was 176.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L90] int pumpRunning = 0; [L91] int systemActive = 1; [L427] int waterLevel = 1; [L428] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L896] int cleanupTimeShifts = 4; [L969] int retValue_acc ; [L970] int tmp ; [L974] FCALL select_helpers() [L975] FCALL select_features() [L976] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L976] RET, EXPR valid_product() [L976] tmp = valid_product() [L978] COND TRUE \read(tmp) [L980] FCALL setup() [L981] CALL runTest() [L963] CALL test() [L358] int splverifierCounter ; [L359] int tmp ; [L360] int tmp___0 ; [L361] int tmp___1 ; [L362] int tmp___2 ; [L365] splverifierCounter = 0 [L367] COND TRUE 1 [L369] COND TRUE splverifierCounter < 4 [L375] tmp = __VERIFIER_nondet_int() [L377] COND TRUE \read(tmp) [L379] CALL waterRise() [L445] COND TRUE waterLevel < 2 [L446] waterLevel = waterLevel + 1 [L379] RET waterRise() [L385] tmp___0 = __VERIFIER_nondet_int() [L387] COND FALSE !(\read(tmp___0)) [L395] tmp___2 = __VERIFIER_nondet_int() [L397] COND FALSE !(\read(tmp___2)) [L403] tmp___1 = __VERIFIER_nondet_int() [L405] COND TRUE \read(tmp___1) [L407] CALL stopSystem() [L334] COND FALSE !(\read(pumpRunning)) [L341] systemActive = 0 [L407] RET stopSystem() [L414] CALL timeShift() [L98] COND FALSE !(\read(pumpRunning)) [L105] COND FALSE !(\read(systemActive)) [L113] CALL __utac_acc__Specification3_spec__1() [L1002] int tmp ; [L1003] int tmp___0 ; [L1004] int tmp___1 ; [L1008] CALL, EXPR isMethaneLevelCritical() [L466] int retValue_acc ; [L469] retValue_acc = methaneLevelCritical [L470] return (retValue_acc); [L1008] RET, EXPR isMethaneLevelCritical() [L1008] tmp = isMethaneLevelCritical() [L1010] COND FALSE !(\read(tmp)) [L1014] CALL, EXPR getWaterLevel() [L498] int retValue_acc ; [L501] retValue_acc = waterLevel [L502] return (retValue_acc); [L1014] RET, EXPR getWaterLevel() [L1014] tmp___0 = getWaterLevel() [L1016] COND TRUE tmp___0 == 2 [L1018] CALL, EXPR isPumpRunning() [L248] int retValue_acc ; [L251] retValue_acc = pumpRunning [L252] return (retValue_acc); [L1018] RET, EXPR isPumpRunning() [L1018] tmp___1 = isPumpRunning() [L1020] COND FALSE !(\read(tmp___1)) [L1024] CALL __automaton_fail() [L996] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 265 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 629 SDtfs, 1054 SDslu, 414 SDs, 0 SdLazy, 2432 SolverSat, 646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=653occurred 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: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 222 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 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...