/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:40:25,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:40:25,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:40:25,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:40:25,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:40:25,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:40:25,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:40:25,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:40:25,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:40:25,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:40:25,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:40:25,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:40:25,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:40:25,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:40:25,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:40:25,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:40:25,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:40:25,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:40:25,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:40:25,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:40:25,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:40:25,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:40:25,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:40:25,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:40:25,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:40:25,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:40:25,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:40:25,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:40:25,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:40:25,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:40:25,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:40:25,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:40:25,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:40:25,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:40:25,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:40:25,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:40:25,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:40:25,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:40:25,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:40:25,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:40:25,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:40:25,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 10:40:25,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:40:25,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:40:25,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:40:25,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:40:25,820 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:40:25,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:40:25,820 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:40:25,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:40:25,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:40:25,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:40:25,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:40:25,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:40:25,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:40:25,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:40:25,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:40:25,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:40:25,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:40:25,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:40:25,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:40:25,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:40:25,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:40:25,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:40:25,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:40:25,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:40:25,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:40:25,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:40:25,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:25,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:40:25,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:40:25,826 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 10:40:26,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:40:26,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:40:26,153 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:40:26,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:40:26,155 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:40:26,156 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-07-20 10:40:26,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4df013d5/2bcf961aad45444f9fabc12ddcbc6d8f/FLAGb6c057701 [2020-07-20 10:40:26,780 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:40:26,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product37.cil.c [2020-07-20 10:40:26,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4df013d5/2bcf961aad45444f9fabc12ddcbc6d8f/FLAGb6c057701 [2020-07-20 10:40:27,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4df013d5/2bcf961aad45444f9fabc12ddcbc6d8f [2020-07-20 10:40:27,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:40:27,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:40:27,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:27,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:40:27,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:40:27,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1f74b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27, skipping insertion in model container [2020-07-20 10:40:27,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:40:27,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:40:27,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:27,735 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:40:27,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:27,839 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:40:27,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27 WrapperNode [2020-07-20 10:40:27,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:27,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:40:27,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:40:27,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:40:27,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:40:27,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:40:27,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:40:27,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:40:27,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 10:40:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:40:28,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:40:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:28,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 10:40:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 10:40:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 10:40:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 10:40:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 10:40:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 10:40:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 10:40:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:40:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:28,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 10:40:28,018 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 10:40:28,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 10:40:28,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 10:40:28,020 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 10:40:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 10:40:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 10:40:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 10:40:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 10:40:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 10:40:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 10:40:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 10:40:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 10:40:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 10:40:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 10:40:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 10:40:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 10:40:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 10:40:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 10:40:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 10:40:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 10:40:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 10:40:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 10:40:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:40:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:40:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 10:40:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 10:40:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 10:40:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 10:40:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 10:40:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 10:40:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:40:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 10:40:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:40:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:40:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 10:40:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 10:40:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:40:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 10:40:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 10:40:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 10:40:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 10:40:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 10:40:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 10:40:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 10:40:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 10:40:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 10:40:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 10:40:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 10:40:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 10:40:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 10:40:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:40:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 10:40:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 10:40:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 10:40:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 10:40:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 10:40:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 10:40:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 10:40:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 10:40:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 10:40:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 10:40:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 10:40:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 10:40:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 10:40:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 10:40:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 10:40:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:40:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 10:40:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:40:29,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:40:29,102 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 10:40:29,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:29 BoogieIcfgContainer [2020-07-20 10:40:29,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:40:29,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:40:29,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:40:29,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:40:29,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:40:27" (1/3) ... [2020-07-20 10:40:29,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48107e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:29, skipping insertion in model container [2020-07-20 10:40:29,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (2/3) ... [2020-07-20 10:40:29,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48107e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:29, skipping insertion in model container [2020-07-20 10:40:29,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:29" (3/3) ... [2020-07-20 10:40:29,121 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2020-07-20 10:40:29,131 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:40:29,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:40:29,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:40:29,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:40:29,185 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:40:29,185 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:40:29,186 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:40:29,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:40:29,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:40:29,186 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:40:29,186 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:40:29,212 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-07-20 10:40:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 10:40:29,227 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:29,229 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] [2020-07-20 10:40:29,230 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:29,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash -749162492, now seen corresponding path program 1 times [2020-07-20 10:40:29,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:29,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737739520] [2020-07-20 10:40:29,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:29,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:40:29,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:29,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:29,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737739520] [2020-07-20 10:40:29,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:29,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:40:29,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295269457] [2020-07-20 10:40:29,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:40:29,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:29,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:40:29,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:40:29,563 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 2 states. [2020-07-20 10:40:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:29,605 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2020-07-20 10:40:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:40:29,607 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 10:40:29,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:29,620 INFO L225 Difference]: With dead ends: 246 [2020-07-20 10:40:29,620 INFO L226 Difference]: Without dead ends: 123 [2020-07-20 10:40:29,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:40:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-07-20 10:40:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-07-20 10:40:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-20 10:40:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2020-07-20 10:40:29,678 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 46 [2020-07-20 10:40:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:29,679 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2020-07-20 10:40:29,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:40:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2020-07-20 10:40:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 10:40:29,683 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:29,683 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] [2020-07-20 10:40:29,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:29,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1435333190, now seen corresponding path program 1 times [2020-07-20 10:40:29,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:29,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684868566] [2020-07-20 10:40:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:30,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:40:30,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:30,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:30,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684868566] [2020-07-20 10:40:30,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:30,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:30,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306824180] [2020-07-20 10:40:30,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:30,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:30,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:30,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:30,199 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand 3 states. [2020-07-20 10:40:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:30,249 INFO L93 Difference]: Finished difference Result 222 states and 269 transitions. [2020-07-20 10:40:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:30,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 10:40:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:30,254 INFO L225 Difference]: With dead ends: 222 [2020-07-20 10:40:30,256 INFO L226 Difference]: Without dead ends: 123 [2020-07-20 10:40:30,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-07-20 10:40:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-07-20 10:40:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-20 10:40:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-07-20 10:40:30,290 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 47 [2020-07-20 10:40:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:30,291 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-07-20 10:40:30,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-07-20 10:40:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-20 10:40:30,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:30,301 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] [2020-07-20 10:40:30,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:30,517 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:30,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1472822994, now seen corresponding path program 1 times [2020-07-20 10:40:30,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:30,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531121916] [2020-07-20 10:40:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:30,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:40:30,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:30,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:30,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:30,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531121916] [2020-07-20 10:40:30,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:30,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:30,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870766517] [2020-07-20 10:40:30,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:30,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:30,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:30,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:30,753 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 3 states. [2020-07-20 10:40:30,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:30,769 INFO L93 Difference]: Finished difference Result 195 states and 227 transitions. [2020-07-20 10:40:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:30,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-20 10:40:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:30,772 INFO L225 Difference]: With dead ends: 195 [2020-07-20 10:40:30,772 INFO L226 Difference]: Without dead ends: 114 [2020-07-20 10:40:30,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-20 10:40:30,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-07-20 10:40:30,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-20 10:40:30,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-07-20 10:40:30,785 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 60 [2020-07-20 10:40:30,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:30,786 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-07-20 10:40:30,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:30,787 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-07-20 10:40:30,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-20 10:40:30,789 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:30,789 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] [2020-07-20 10:40:31,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:31,003 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:31,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1759847866, now seen corresponding path program 1 times [2020-07-20 10:40:31,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:31,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449329474] [2020-07-20 10:40:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:31,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 10:40:31,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:31,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:31,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449329474] [2020-07-20 10:40:31,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:31,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 10:40:31,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549118091] [2020-07-20 10:40:31,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 10:40:31,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:31,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 10:40:31,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:40:31,241 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 7 states. [2020-07-20 10:40:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:31,865 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2020-07-20 10:40:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 10:40:31,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-07-20 10:40:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:31,868 INFO L225 Difference]: With dead ends: 281 [2020-07-20 10:40:31,869 INFO L226 Difference]: Without dead ends: 191 [2020-07-20 10:40:31,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-07-20 10:40:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-07-20 10:40:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 175. [2020-07-20 10:40:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-07-20 10:40:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2020-07-20 10:40:31,895 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 64 [2020-07-20 10:40:31,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:31,895 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2020-07-20 10:40:31,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 10:40:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2020-07-20 10:40:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 10:40:31,897 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:31,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:32,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:32,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:32,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:32,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1563272264, now seen corresponding path program 1 times [2020-07-20 10:40:32,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:32,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339305167] [2020-07-20 10:40:32,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:32,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 10:40:32,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:32,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:32,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339305167] [2020-07-20 10:40:32,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:32,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:32,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419035668] [2020-07-20 10:40:32,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:32,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:32,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:32,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:32,332 INFO L87 Difference]: Start difference. First operand 175 states and 206 transitions. Second operand 6 states. [2020-07-20 10:40:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:32,583 INFO L93 Difference]: Finished difference Result 466 states and 575 transitions. [2020-07-20 10:40:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:40:32,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-20 10:40:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:32,596 INFO L225 Difference]: With dead ends: 466 [2020-07-20 10:40:32,596 INFO L226 Difference]: Without dead ends: 315 [2020-07-20 10:40:32,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 10:40:32,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-07-20 10:40:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2020-07-20 10:40:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-07-20 10:40:32,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 371 transitions. [2020-07-20 10:40:32,638 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 371 transitions. Word has length 79 [2020-07-20 10:40:32,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:32,639 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 371 transitions. [2020-07-20 10:40:32,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:32,639 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 371 transitions. [2020-07-20 10:40:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 10:40:32,643 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:32,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:32,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:32,848 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:32,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1573868364, now seen corresponding path program 1 times [2020-07-20 10:40:32,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:32,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532851150] [2020-07-20 10:40:32,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:33,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:40:33,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:33,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:33,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532851150] [2020-07-20 10:40:33,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:33,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:33,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800426829] [2020-07-20 10:40:33,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:33,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:33,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:33,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:33,094 INFO L87 Difference]: Start difference. First operand 311 states and 371 transitions. Second operand 6 states. [2020-07-20 10:40:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:33,143 INFO L93 Difference]: Finished difference Result 608 states and 742 transitions. [2020-07-20 10:40:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:40:33,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-07-20 10:40:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:33,147 INFO L225 Difference]: With dead ends: 608 [2020-07-20 10:40:33,147 INFO L226 Difference]: Without dead ends: 321 [2020-07-20 10:40:33,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:40:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-07-20 10:40:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2020-07-20 10:40:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-07-20 10:40:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 381 transitions. [2020-07-20 10:40:33,180 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 381 transitions. Word has length 83 [2020-07-20 10:40:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:33,181 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 381 transitions. [2020-07-20 10:40:33,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:33,181 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 381 transitions. [2020-07-20 10:40:33,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 10:40:33,182 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:33,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:33,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:33,397 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:33,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1596500618, now seen corresponding path program 1 times [2020-07-20 10:40:33,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:33,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347272382] [2020-07-20 10:40:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:33,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 10:40:33,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:33,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:33,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347272382] [2020-07-20 10:40:33,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:33,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:40:33,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434368996] [2020-07-20 10:40:33,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:40:33,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:33,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:40:33,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:40:33,697 INFO L87 Difference]: Start difference. First operand 321 states and 381 transitions. Second operand 5 states. [2020-07-20 10:40:33,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:33,732 INFO L93 Difference]: Finished difference Result 632 states and 780 transitions. [2020-07-20 10:40:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:40:33,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-07-20 10:40:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:33,735 INFO L225 Difference]: With dead ends: 632 [2020-07-20 10:40:33,735 INFO L226 Difference]: Without dead ends: 335 [2020-07-20 10:40:33,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:40:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-07-20 10:40:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 329. [2020-07-20 10:40:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-07-20 10:40:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 389 transitions. [2020-07-20 10:40:33,762 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 389 transitions. Word has length 83 [2020-07-20 10:40:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:33,762 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 389 transitions. [2020-07-20 10:40:33,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:40:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 389 transitions. [2020-07-20 10:40:33,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 10:40:33,764 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:33,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:33,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:33,978 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:33,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:33,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1672974679, now seen corresponding path program 1 times [2020-07-20 10:40:33,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:33,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743093586] [2020-07-20 10:40:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:34,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 10:40:34,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:34,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:34,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743093586] [2020-07-20 10:40:34,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:34,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:34,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082328155] [2020-07-20 10:40:34,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:34,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:34,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:34,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:34,260 INFO L87 Difference]: Start difference. First operand 329 states and 389 transitions. Second operand 3 states. [2020-07-20 10:40:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:34,317 INFO L93 Difference]: Finished difference Result 883 states and 1115 transitions. [2020-07-20 10:40:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:34,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-07-20 10:40:34,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:34,326 INFO L225 Difference]: With dead ends: 883 [2020-07-20 10:40:34,327 INFO L226 Difference]: Without dead ends: 578 [2020-07-20 10:40:34,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:34,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-07-20 10:40:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 575. [2020-07-20 10:40:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-07-20 10:40:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 704 transitions. [2020-07-20 10:40:34,389 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 704 transitions. Word has length 83 [2020-07-20 10:40:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:34,389 INFO L479 AbstractCegarLoop]: Abstraction has 575 states and 704 transitions. [2020-07-20 10:40:34,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 704 transitions. [2020-07-20 10:40:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-20 10:40:34,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:34,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:34,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:34,609 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:34,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1457224847, now seen corresponding path program 1 times [2020-07-20 10:40:34,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:34,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783825673] [2020-07-20 10:40:34,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:34,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:35,013 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:35,366 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:40:35,366 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:40:35,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:35,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:40:35 BoogieIcfgContainer [2020-07-20 10:40:35,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:40:35,793 INFO L168 Benchmark]: Toolchain (without parser) took 8631.31 ms. Allocated memory was 138.4 MB in the beginning and 316.1 MB in the end (delta: 177.7 MB). Free memory was 100.8 MB in the beginning and 259.3 MB in the end (delta: -158.5 MB). Peak memory consumption was 164.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:35,793 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:40:35,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.57 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 170.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:35,802 INFO L168 Benchmark]: Boogie Preprocessor took 101.59 ms. Allocated memory is still 202.4 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:35,803 INFO L168 Benchmark]: RCFGBuilder took 1169.12 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 165.9 MB in the beginning and 196.4 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:35,804 INFO L168 Benchmark]: TraceAbstraction took 6675.82 ms. Allocated memory was 235.4 MB in the beginning and 316.1 MB in the end (delta: 80.7 MB). Free memory was 196.4 MB in the beginning and 259.3 MB in the end (delta: -63.0 MB). Peak memory consumption was 162.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:35,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.57 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 170.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.59 ms. Allocated memory is still 202.4 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1169.12 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 165.9 MB in the beginning and 196.4 MB in the end (delta: -30.5 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6675.82 ms. Allocated memory was 235.4 MB in the beginning and 316.1 MB in the end (delta: 80.7 MB). Free memory was 196.4 MB in the beginning and 259.3 MB in the end (delta: -63.0 MB). Peak memory consumption was 162.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L832] int waterLevel = 1; [L833] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=70, \old(head)=63, \old(head)=76, \old(methaneLevelCritical)=83, \old(pumpRunning)=57, \old(systemActive)=61, \old(waterLevel)=91, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L487] int retValue_acc ; [L488] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L492] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L493] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L494] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L574] int retValue_acc ; [L577] retValue_acc = 1 [L578] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L494] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L498] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L499] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L478] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L776] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L778] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L788] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L850] COND TRUE waterLevel < 2 [L851] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L788] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L798] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L862] COND FALSE !(\read(methaneLevelCritical)) [L865] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L798] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___2=-1, waterLevel=2] [L819] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L595] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L602] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L604] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L650] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L653] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L668] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L624] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L627] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L629] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L747] int retValue_acc ; [L748] int tmp ; [L749] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L753] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L912] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L915] COND FALSE !(waterLevel < 2) [L919] retValue_acc = 0 [L920] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L753] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L753] tmp = isHighWaterSensorDry() [L755] COND FALSE !(\read(tmp)) [L758] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L760] retValue_acc = tmp___0 [L761] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L629] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L629] tmp = isHighWaterLevel() [L631] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L633] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L678] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L633] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L668] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L604] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L610] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L514] int tmp ; [L515] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L519] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L871] int retValue_acc ; [L874] retValue_acc = methaneLevelCritical [L875] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L519] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L519] tmp = isMethaneLevelCritical() [L521] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L523] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L523] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L523] tmp___0 = isPumpRunning() [L525] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L527] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L543] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1111 SDtfs, 440 SDslu, 1834 SDs, 0 SdLazy, 497 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 518 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=575occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 29 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 632 NumberOfCodeBlocks, 632 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 537 ConstructedInterpolants, 0 QuantifiedInterpolants, 64763 SizeOfPredicates, 17 NumberOfNonLiveVariables, 5460 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...