/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:08:32,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:08:32,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:08:32,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:08:32,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:08:32,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:08:32,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:08:32,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:08:32,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:08:32,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:08:32,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:08:32,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:08:32,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:08:32,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:08:32,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:08:32,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:08:32,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:08:32,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:08:32,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:08:32,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:08:32,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:08:32,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:08:32,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:08:32,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:08:32,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:08:32,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:08:32,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:08:32,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:08:32,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:08:32,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:08:32,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:08:32,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:08:32,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:08:32,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:08:32,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:08:32,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:08:32,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:08:32,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:08:32,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:08:32,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:08:32,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:08:32,673 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 [2020-08-18 20:08:32,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:08:32,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:08:32,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:08:32,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:08:32,703 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:08:32,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:08:32,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:08:32,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:08:32,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:08:32,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:08:32,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:08:32,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:08:32,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:08:32,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:08:32,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:08:32,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:08:32,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:08:32,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:08:32,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:08:32,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:08:32,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:08:32,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:08:32,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:08:32,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:08:32,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:08:32,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:08:32,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:08:32,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:08:32,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:08:32,709 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=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:08:33,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:08:33,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:08:33,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:08:33,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:08:33,042 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:08:33,043 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2020-08-18 20:08:33,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec7d07677/cf9b0534302a4e8ebaf327d5f898625e/FLAG3863f6587 [2020-08-18 20:08:33,573 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:08:33,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2020-08-18 20:08:33,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec7d07677/cf9b0534302a4e8ebaf327d5f898625e/FLAG3863f6587 [2020-08-18 20:08:33,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec7d07677/cf9b0534302a4e8ebaf327d5f898625e [2020-08-18 20:08:33,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:08:33,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:08:33,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:08:33,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:08:33,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:08:33,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:08:33" (1/1) ... [2020-08-18 20:08:33,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c974b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:33, skipping insertion in model container [2020-08-18 20:08:33,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:08:33" (1/1) ... [2020-08-18 20:08:33,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:08:33,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:08:34,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:08:34,531 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:08:34,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:08:34,683 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:08:34,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34 WrapperNode [2020-08-18 20:08:34,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:08:34,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:08:34,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:08:34,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:08:34,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34" (1/1) ... [2020-08-18 20:08:34,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34" (1/1) ... [2020-08-18 20:08:34,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34" (1/1) ... [2020-08-18 20:08:34,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34" (1/1) ... [2020-08-18 20:08:34,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34" (1/1) ... [2020-08-18 20:08:34,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34" (1/1) ... [2020-08-18 20:08:34,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34" (1/1) ... [2020-08-18 20:08:34,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:08:34,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:08:34,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:08:34,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:08:34,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34" (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 [2020-08-18 20:08:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:08:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:08:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:08:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:08:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:08:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:08:34,858 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:08:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:08:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:08:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:08:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:08:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 20:08:34,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:08:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:08:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:08:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:08:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:08:34,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:08:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:08:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:08:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:08:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:08:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:08:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:08:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:08:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:08:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:08:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:08:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 20:08:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:08:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:08:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:08:34,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:08:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:08:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:08:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:08:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:08:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:08:34,864 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:08:34,865 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:08:34,865 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:08:34,865 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:08:34,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:08:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:08:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:08:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:08:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:08:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:08:34,866 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:08:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:08:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:08:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:08:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:08:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:08:34,867 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:08:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 20:08:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:08:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:08:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:08:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:08:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:08:34,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:08:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:08:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:08:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:08:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:08:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:08:34,869 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:08:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:08:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:08:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:08:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:08:34,870 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:08:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:08:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:08:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:08:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:08:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:08:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:08:34,871 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:08:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:08:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:08:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:08:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 20:08:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:08:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:08:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:08:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:08:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:08:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:08:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:08:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:08:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:08:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:08:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:08:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:08:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:08:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:08:36,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:08:36,105 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:08:36,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:08:36 BoogieIcfgContainer [2020-08-18 20:08:36,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:08:36,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:08:36,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:08:36,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:08:36,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:08:33" (1/3) ... [2020-08-18 20:08:36,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b89ebf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:08:36, skipping insertion in model container [2020-08-18 20:08:36,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:34" (2/3) ... [2020-08-18 20:08:36,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b89ebf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:08:36, skipping insertion in model container [2020-08-18 20:08:36,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:08:36" (3/3) ... [2020-08-18 20:08:36,118 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2020-08-18 20:08:36,129 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:08:36,137 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:08:36,151 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:08:36,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:08:36,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:08:36,176 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:08:36,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:08:36,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:08:36,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:08:36,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:08:36,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:08:36,199 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-18 20:08:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:08:36,210 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:36,211 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] [2020-08-18 20:08:36,212 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:36,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:36,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1312501880, now seen corresponding path program 1 times [2020-08-18 20:08:36,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:36,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702570060] [2020-08-18 20:08:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:36,956 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:36,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:08:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:08:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:08:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:37,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702570060] [2020-08-18 20:08:37,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:37,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:08:37,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220038840] [2020-08-18 20:08:37,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:08:37,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:37,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:08:37,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:08:37,135 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-18 20:08:38,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:38,345 INFO L93 Difference]: Finished difference Result 332 states and 431 transitions. [2020-08-18 20:08:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:08:38,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 20:08:38,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:38,362 INFO L225 Difference]: With dead ends: 332 [2020-08-18 20:08:38,362 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 20:08:38,368 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 [2020-08-18 20:08:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 20:08:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 144. [2020-08-18 20:08:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-18 20:08:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-18 20:08:38,481 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 52 [2020-08-18 20:08:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:38,482 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-18 20:08:38,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:08:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-18 20:08:38,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 20:08:38,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:38,493 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] [2020-08-18 20:08:38,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:08:38,494 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:38,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:38,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1642029938, now seen corresponding path program 1 times [2020-08-18 20:08:38,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:38,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369172279] [2020-08-18 20:08:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:38,874 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:38,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:38,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:38,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:38,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:38,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:08:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:38,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:08:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:38,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:08:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:38,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369172279] [2020-08-18 20:08:38,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:38,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:08:38,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216473234] [2020-08-18 20:08:38,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:08:38,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:38,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:08:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:08:38,922 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 4 states. [2020-08-18 20:08:39,318 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:40,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:40,296 INFO L93 Difference]: Finished difference Result 255 states and 310 transitions. [2020-08-18 20:08:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:08:40,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 20:08:40,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:40,301 INFO L225 Difference]: With dead ends: 255 [2020-08-18 20:08:40,301 INFO L226 Difference]: Without dead ends: 163 [2020-08-18 20:08:40,303 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 [2020-08-18 20:08:40,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-18 20:08:40,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 135. [2020-08-18 20:08:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-18 20:08:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2020-08-18 20:08:40,344 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 53 [2020-08-18 20:08:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:40,344 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2020-08-18 20:08:40,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:08:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2020-08-18 20:08:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:08:40,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:40,347 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] [2020-08-18 20:08:40,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:08:40,347 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:40,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:40,348 INFO L82 PathProgramCache]: Analyzing trace with hash 493625468, now seen corresponding path program 1 times [2020-08-18 20:08:40,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:40,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918009387] [2020-08-18 20:08:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:40,728 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:40,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:40,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:08:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:08:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:08:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:40,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918009387] [2020-08-18 20:08:40,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:40,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:08:40,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901972834] [2020-08-18 20:08:40,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:08:40,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:08:40,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:08:40,806 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand 8 states. [2020-08-18 20:08:41,154 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:41,460 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:41,729 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:41,949 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:42,633 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:44,625 INFO L93 Difference]: Finished difference Result 466 states and 575 transitions. [2020-08-18 20:08:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:08:44,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 20:08:44,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:44,635 INFO L225 Difference]: With dead ends: 466 [2020-08-18 20:08:44,635 INFO L226 Difference]: Without dead ends: 355 [2020-08-18 20:08:44,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:08:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-18 20:08:44,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 290. [2020-08-18 20:08:44,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-18 20:08:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 349 transitions. [2020-08-18 20:08:44,712 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 349 transitions. Word has length 58 [2020-08-18 20:08:44,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:44,712 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 349 transitions. [2020-08-18 20:08:44,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:08:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 349 transitions. [2020-08-18 20:08:44,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 20:08:44,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:44,715 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] [2020-08-18 20:08:44,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:08:44,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:44,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:44,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1982308337, now seen corresponding path program 1 times [2020-08-18 20:08:44,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:44,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864807702] [2020-08-18 20:08:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,024 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:45,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:08:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:08:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 20:08:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 20:08:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:45,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864807702] [2020-08-18 20:08:45,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:45,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:08:45,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54398207] [2020-08-18 20:08:45,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:08:45,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:45,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:08:45,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:08:45,124 INFO L87 Difference]: Start difference. First operand 290 states and 349 transitions. Second operand 8 states. [2020-08-18 20:08:45,516 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:46,996 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:47,366 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:47,632 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:47,898 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:48,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:48,785 INFO L93 Difference]: Finished difference Result 893 states and 1167 transitions. [2020-08-18 20:08:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:08:48,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 20:08:48,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:48,795 INFO L225 Difference]: With dead ends: 893 [2020-08-18 20:08:48,796 INFO L226 Difference]: Without dead ends: 627 [2020-08-18 20:08:48,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:08:48,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-18 20:08:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 557. [2020-08-18 20:08:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2020-08-18 20:08:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 683 transitions. [2020-08-18 20:08:48,927 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 683 transitions. Word has length 63 [2020-08-18 20:08:48,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:48,928 INFO L479 AbstractCegarLoop]: Abstraction has 557 states and 683 transitions. [2020-08-18 20:08:48,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:08:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 683 transitions. [2020-08-18 20:08:48,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 20:08:48,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:48,931 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] [2020-08-18 20:08:48,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:08:48,932 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:48,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:48,933 INFO L82 PathProgramCache]: Analyzing trace with hash -427232299, now seen corresponding path program 1 times [2020-08-18 20:08:48,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:48,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904419475] [2020-08-18 20:08:48,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:08:49,000 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:08:49,001 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:08:49,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:08:49,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:08:49 BoogieIcfgContainer [2020-08-18 20:08:49,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:08:49,032 INFO L168 Benchmark]: Toolchain (without parser) took 15116.01 ms. Allocated memory was 145.8 MB in the beginning and 495.5 MB in the end (delta: 349.7 MB). Free memory was 99.6 MB in the beginning and 265.8 MB in the end (delta: -166.2 MB). Peak memory consumption was 183.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:49,033 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:08:49,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.20 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 99.3 MB in the beginning and 167.6 MB in the end (delta: -68.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:49,035 INFO L168 Benchmark]: Boogie Preprocessor took 93.11 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 163.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:49,036 INFO L168 Benchmark]: RCFGBuilder took 1332.45 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 163.4 MB in the beginning and 190.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:49,037 INFO L168 Benchmark]: TraceAbstraction took 12918.21 ms. Allocated memory was 232.8 MB in the beginning and 495.5 MB in the end (delta: 262.7 MB). Free memory was 190.6 MB in the beginning and 265.8 MB in the end (delta: -75.2 MB). Peak memory consumption was 187.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:49,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.20 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 99.3 MB in the beginning and 167.6 MB in the end (delta: -68.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.11 ms. Allocated memory is still 201.9 MB. Free memory was 167.6 MB in the beginning and 163.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1332.45 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 163.4 MB in the beginning and 190.6 MB in the end (delta: -27.1 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12918.21 ms. Allocated memory was 232.8 MB in the beginning and 495.5 MB in the end (delta: 262.7 MB). Free memory was 190.6 MB in the beginning and 265.8 MB in the end (delta: -75.2 MB). Peak memory consumption was 187.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 853]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] int waterLevel = 1; [L85] int methaneLevelCritical = 0; [L356] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L559] int pumpRunning = 0; [L560] int systemActive = 1; [L896] int cleanupTimeShifts = 4; [L969] int retValue_acc ; [L970] int tmp ; [L974] FCALL select_helpers() [L975] FCALL select_features() [L976] CALL, EXPR valid_product() [L887] int retValue_acc ; [L890] retValue_acc = 1 [L891] 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() [L781] int splverifierCounter ; [L782] int tmp ; [L783] int tmp___0 ; [L784] int tmp___1 ; [L785] int tmp___2 ; [L788] splverifierCounter = 0 [L790] COND TRUE 1 [L792] COND TRUE splverifierCounter < 4 [L798] tmp = __VERIFIER_nondet_int() [L800] COND TRUE \read(tmp) [L802] CALL waterRise() [L102] COND TRUE waterLevel < 2 [L103] waterLevel = waterLevel + 1 [L802] RET waterRise() [L808] tmp___0 = __VERIFIER_nondet_int() [L810] COND FALSE !(\read(tmp___0)) [L818] tmp___2 = __VERIFIER_nondet_int() [L820] COND FALSE !(\read(tmp___2)) [L826] tmp___1 = __VERIFIER_nondet_int() [L828] COND TRUE \read(tmp___1) [L830] CALL stopSystem() [L759] COND FALSE !(\read(pumpRunning)) [L766] systemActive = 0 [L830] RET stopSystem() [L837] CALL timeShift() [L566] COND FALSE !(\read(pumpRunning)) [L573] COND FALSE !(\read(systemActive)) [L581] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L123] int retValue_acc ; [L126] retValue_acc = methaneLevelCritical [L127] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L155] int retValue_acc ; [L158] retValue_acc = waterLevel [L159] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L673] int retValue_acc ; [L676] retValue_acc = pumpRunning [L677] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L853] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 537 SDtfs, 879 SDslu, 372 SDs, 0 SdLazy, 2076 SolverSat, 523 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=557occurred 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, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s 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...