/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:07:17,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:07:17,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:07:17,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:07:17,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:07:17,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:07:17,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:07:17,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:07:17,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:07:17,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:07:17,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:07:17,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:07:17,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:07:17,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:07:17,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:07:17,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:07:17,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:07:17,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:07:17,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:07:17,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:07:17,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:07:17,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:07:17,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:07:17,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:07:17,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:07:17,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:07:17,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:07:17,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:07:17,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:07:17,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:07:17,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:07:17,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:07:17,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:07:17,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:07:17,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:07:17,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:07:17,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:07:17,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:07:17,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:07:17,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:07:17,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:07:17,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:07:17,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:07:17,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:07:17,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:07:17,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:07:17,927 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:07:17,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:07:17,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:07:17,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:07:17,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:07:17,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:07:17,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:07:17,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:07:17,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:07:17,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:07:17,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:07:17,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:07:17,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:07:17,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:07:17,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:07:17,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:07:17,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:07:17,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:07:17,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:07:17,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:07:17,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:07:17,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:07:17,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:07:17,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:07:17,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:07:17,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:07:18,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:07:18,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:07:18,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:07:18,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:07:18,281 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:07:18,282 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2020-08-18 20:07:18,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6122ffd4/289bda8641e647a88e057b2caa025554/FLAG63bc9e589 [2020-08-18 20:07:18,880 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:07:18,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2020-08-18 20:07:18,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6122ffd4/289bda8641e647a88e057b2caa025554/FLAG63bc9e589 [2020-08-18 20:07:19,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6122ffd4/289bda8641e647a88e057b2caa025554 [2020-08-18 20:07:19,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:07:19,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:07:19,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:07:19,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:07:19,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:07:19,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:07:19" (1/1) ... [2020-08-18 20:07:19,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17979b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19, skipping insertion in model container [2020-08-18 20:07:19,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:07:19" (1/1) ... [2020-08-18 20:07:19,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:07:19,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:07:19,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:07:19,599 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:07:19,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:07:19,754 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:07:19,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19 WrapperNode [2020-08-18 20:07:19,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:07:19,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:07:19,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:07:19,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:07:19,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19" (1/1) ... [2020-08-18 20:07:19,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19" (1/1) ... [2020-08-18 20:07:19,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19" (1/1) ... [2020-08-18 20:07:19,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19" (1/1) ... [2020-08-18 20:07:19,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19" (1/1) ... [2020-08-18 20:07:19,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19" (1/1) ... [2020-08-18 20:07:19,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19" (1/1) ... [2020-08-18 20:07:19,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:07:19,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:07:19,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:07:19,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:07:19,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:07:19,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:07:19,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:07:19,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:07:19,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:07:19,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:07:19,962 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:07:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:07:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:07:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:07:19,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:07:19,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:07:19,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:07:19,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:07:19,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:07:19,965 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:07:19,965 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:07:19,965 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:07:19,965 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:07:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:07:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:07:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:07:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:07:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:07:19,966 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:07:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:07:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:07:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:07:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:07:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:07:19,967 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:07:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:07:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:07:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:07:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:07:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:07:19,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:07:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:07:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:07:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:07:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:07:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:07:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:07:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:07:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:07:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:07:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:07:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:07:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:07:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:07:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:07:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:07:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:07:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:07:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:07:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:07:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:07:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:07:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:07:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:07:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:07:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:07:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:07:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:07:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:07:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:07:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:07:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:07:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:07:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:07:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:07:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:07:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:07:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:07:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:07:19,974 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:07:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:07:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:07:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:07:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:07:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:07:19,975 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:07:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:07:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:07:19,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:07:20,989 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:07:20,989 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:07:20,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:07:20 BoogieIcfgContainer [2020-08-18 20:07:20,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:07:20,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:07:20,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:07:20,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:07:21,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:07:19" (1/3) ... [2020-08-18 20:07:21,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d7c9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:07:21, skipping insertion in model container [2020-08-18 20:07:21,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:07:19" (2/3) ... [2020-08-18 20:07:21,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d7c9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:07:21, skipping insertion in model container [2020-08-18 20:07:21,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:07:20" (3/3) ... [2020-08-18 20:07:21,003 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product02.cil.c [2020-08-18 20:07:21,014 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:07:21,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:07:21,037 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:07:21,062 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:07:21,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:07:21,062 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:07:21,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:07:21,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:07:21,063 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:07:21,063 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:07:21,063 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:07:21,086 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states. [2020-08-18 20:07:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:07:21,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:21,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:21,098 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:21,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:21,105 INFO L82 PathProgramCache]: Analyzing trace with hash 761454740, now seen corresponding path program 1 times [2020-08-18 20:07:21,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:21,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920024543] [2020-08-18 20:07:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:21,812 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:07:21,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:21,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:21,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:21,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:07:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:21,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:07:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:21,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920024543] [2020-08-18 20:07:21,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:21,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:07:21,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520154874] [2020-08-18 20:07:21,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:07:21,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:21,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:07:21,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:07:21,976 INFO L87 Difference]: Start difference. First operand 137 states. Second operand 3 states. [2020-08-18 20:07:22,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:22,864 INFO L93 Difference]: Finished difference Result 220 states and 294 transitions. [2020-08-18 20:07:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:07:22,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 20:07:22,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:22,881 INFO L225 Difference]: With dead ends: 220 [2020-08-18 20:07:22,881 INFO L226 Difference]: Without dead ends: 120 [2020-08-18 20:07:22,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:07:22,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-18 20:07:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2020-08-18 20:07:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-18 20:07:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-08-18 20:07:22,998 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 52 [2020-08-18 20:07:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:22,999 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-08-18 20:07:23,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:07:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-08-18 20:07:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 20:07:23,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:23,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:23,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:07:23,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:23,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:23,007 INFO L82 PathProgramCache]: Analyzing trace with hash -873378410, now seen corresponding path program 1 times [2020-08-18 20:07:23,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:23,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392019610] [2020-08-18 20:07:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,387 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:07:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:07:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:07:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:07:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:23,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392019610] [2020-08-18 20:07:23,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:23,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:07:23,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429984751] [2020-08-18 20:07:23,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:07:23,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:23,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:07:23,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:07:23,436 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 4 states. [2020-08-18 20:07:23,903 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:07:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:24,372 INFO L93 Difference]: Finished difference Result 149 states and 181 transitions. [2020-08-18 20:07:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:07:24,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 20:07:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:24,380 INFO L225 Difference]: With dead ends: 149 [2020-08-18 20:07:24,380 INFO L226 Difference]: Without dead ends: 104 [2020-08-18 20:07:24,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:07:24,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-18 20:07:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-08-18 20:07:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 20:07:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-08-18 20:07:24,409 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 53 [2020-08-18 20:07:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:24,410 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-08-18 20:07:24,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:07:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-08-18 20:07:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:07:24,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:24,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:07:24,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:07:24,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:24,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:24,413 INFO L82 PathProgramCache]: Analyzing trace with hash -646748837, now seen corresponding path program 1 times [2020-08-18 20:07:24,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:24,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974363087] [2020-08-18 20:07:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:24,770 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:07:24,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:24,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:24,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:24,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:07:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:07:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:24,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:07:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:24,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974363087] [2020-08-18 20:07:24,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:24,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:07:24,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331603543] [2020-08-18 20:07:24,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:07:24,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:24,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:07:24,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:07:24,894 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 8 states. [2020-08-18 20:07:25,248 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:07:25,554 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:07:25,828 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:07:26,056 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:07:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:26,809 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2020-08-18 20:07:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:07:26,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 20:07:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:26,813 INFO L225 Difference]: With dead ends: 162 [2020-08-18 20:07:26,813 INFO L226 Difference]: Without dead ends: 104 [2020-08-18 20:07:26,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:07:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-18 20:07:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-08-18 20:07:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 20:07:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 20:07:26,839 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 58 [2020-08-18 20:07:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:26,840 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 20:07:26,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:07:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 20:07:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 20:07:26,841 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:26,842 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] [2020-08-18 20:07:26,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:07:26,842 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:26,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:26,843 INFO L82 PathProgramCache]: Analyzing trace with hash 387624930, now seen corresponding path program 1 times [2020-08-18 20:07:26,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:26,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360015977] [2020-08-18 20:07:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,123 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:07:27,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:07:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:07:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:07:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:07:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:07:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:07:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:07:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:07:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 20:07:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:07:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:07:27,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360015977] [2020-08-18 20:07:27,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:07:27,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:07:27,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397503677] [2020-08-18 20:07:27,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:07:27,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:07:27,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:07:27,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:07:27,198 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 7 states. [2020-08-18 20:07:27,577 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:07:28,472 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:07:28,729 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:07:28,992 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:07:29,230 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:07:29,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:07:29,475 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2020-08-18 20:07:29,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:07:29,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-18 20:07:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:07:29,478 INFO L225 Difference]: With dead ends: 209 [2020-08-18 20:07:29,478 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 20:07:29,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:07:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 20:07:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2020-08-18 20:07:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-18 20:07:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2020-08-18 20:07:29,517 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 61 [2020-08-18 20:07:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:07:29,517 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2020-08-18 20:07:29,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:07:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2020-08-18 20:07:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 20:07:29,519 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:07:29,520 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] [2020-08-18 20:07:29,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:07:29,520 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:07:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:07:29,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1045725272, now seen corresponding path program 1 times [2020-08-18 20:07:29,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:07:29,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136658525] [2020-08-18 20:07:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:07:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:07:29,576 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:07:29,576 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:07:29,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:07:29,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:07:29 BoogieIcfgContainer [2020-08-18 20:07:29,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:07:29,605 INFO L168 Benchmark]: Toolchain (without parser) took 10455.11 ms. Allocated memory was 137.9 MB in the beginning and 385.4 MB in the end (delta: 247.5 MB). Free memory was 100.3 MB in the beginning and 185.1 MB in the end (delta: -84.9 MB). Peak memory consumption was 162.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:07:29,606 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:07:29,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.99 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 171.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:07:29,608 INFO L168 Benchmark]: Boogie Preprocessor took 103.38 ms. Allocated memory is still 200.8 MB. Free memory was 171.4 MB in the beginning and 167.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-18 20:07:29,608 INFO L168 Benchmark]: RCFGBuilder took 1134.90 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 167.5 MB in the beginning and 202.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:07:29,609 INFO L168 Benchmark]: TraceAbstraction took 8607.19 ms. Allocated memory was 231.2 MB in the beginning and 385.4 MB in the end (delta: 154.1 MB). Free memory was 200.8 MB in the beginning and 185.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 169.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:07:29,613 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 604.99 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.0 MB in the beginning and 171.4 MB in the end (delta: -71.3 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.38 ms. Allocated memory is still 200.8 MB. Free memory was 171.4 MB in the beginning and 167.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1134.90 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 167.5 MB in the beginning and 202.3 MB in the end (delta: -34.8 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8607.19 ms. Allocated memory was 231.2 MB in the beginning and 385.4 MB in the end (delta: 154.1 MB). Free memory was 200.8 MB in the beginning and 185.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 169.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L256] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L462] int pumpRunning = 0; [L463] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L779] int waterLevel = 1; [L780] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L617] int splverifierCounter ; [L618] int tmp ; [L619] int tmp___0 ; [L620] int tmp___1 ; [L621] int tmp___2 ; [L624] splverifierCounter = 0 [L626] COND TRUE 1 [L628] COND TRUE splverifierCounter < 4 [L634] tmp = __VERIFIER_nondet_int() [L636] COND TRUE \read(tmp) [L638] CALL waterRise() [L797] COND TRUE waterLevel < 2 [L798] waterLevel = waterLevel + 1 [L638] RET waterRise() [L644] tmp___0 = __VERIFIER_nondet_int() [L646] COND FALSE !(\read(tmp___0)) [L654] tmp___2 = __VERIFIER_nondet_int() [L656] COND FALSE !(\read(tmp___2)) [L662] tmp___1 = __VERIFIER_nondet_int() [L664] COND FALSE !(\read(tmp___1)) [L671] CALL timeShift() [L470] COND FALSE !(\read(pumpRunning)) [L477] COND TRUE \read(systemActive) [L479] FCALL processEnvironment() [L485] CALL __utac_acc__Specification3_spec__1() [L580] int tmp ; [L581] int tmp___0 ; [L582] int tmp___1 ; [L586] CALL, EXPR isMethaneLevelCritical() [L818] int retValue_acc ; [L821] retValue_acc = methaneLevelCritical [L822] return (retValue_acc); [L586] RET, EXPR isMethaneLevelCritical() [L586] tmp = isMethaneLevelCritical() [L588] COND FALSE !(\read(tmp)) [L592] CALL, EXPR getWaterLevel() [L850] int retValue_acc ; [L853] retValue_acc = waterLevel [L854] return (retValue_acc); [L592] RET, EXPR getWaterLevel() [L592] tmp___0 = getWaterLevel() [L594] COND TRUE tmp___0 == 2 [L596] CALL, EXPR isPumpRunning() [L525] int retValue_acc ; [L528] retValue_acc = pumpRunning [L529] return (retValue_acc); [L596] RET, EXPR isPumpRunning() [L596] tmp___1 = isPumpRunning() [L598] COND FALSE !(\read(tmp___1)) [L602] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 201 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 409 SDslu, 195 SDs, 0 SdLazy, 920 SolverSat, 252 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 88 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 289 NumberOfCodeBlocks, 289 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 220 ConstructedInterpolants, 0 QuantifiedInterpolants, 60932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...