/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:44:39,841 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:44:39,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:44:39,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:44:39,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:44:39,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:44:39,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:44:39,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:44:39,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:44:39,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:44:39,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:44:39,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:44:39,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:44:39,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:44:39,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:44:39,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:44:39,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:44:39,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:44:39,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:44:39,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:44:39,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:44:39,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:44:39,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:44:39,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:44:39,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:44:39,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:44:39,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:44:39,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:44:39,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:44:39,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:44:39,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:44:39,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:44:39,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:44:39,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:44:39,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:44:39,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:44:39,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:44:39,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:44:39,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:44:39,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:44:39,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:44:39,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 14:44:39,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:44:39,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:44:39,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:44:39,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:44:39,965 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:44:39,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:44:39,965 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:44:39,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:44:39,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:44:39,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:44:39,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:44:39,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:44:39,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:44:39,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:44:39,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:44:39,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:44:39,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:44:39,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:44:39,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:44:39,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:44:39,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:44:39,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:44:39,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:44:39,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:44:39,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:44:39,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:44:39,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:44:39,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:44:39,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:44:39,971 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:44:40,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:44:40,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:44:40,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:44:40,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:44:40,323 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:44:40,324 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2020-08-21 14:44:40,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6a9bfe65/ce315844522b4c71938cfa9bb6c96a83/FLAGcfb50a8d8 [2020-08-21 14:44:40,941 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:44:40,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product02.cil.c [2020-08-21 14:44:40,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6a9bfe65/ce315844522b4c71938cfa9bb6c96a83/FLAGcfb50a8d8 [2020-08-21 14:44:41,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6a9bfe65/ce315844522b4c71938cfa9bb6c96a83 [2020-08-21 14:44:41,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:44:41,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:44:41,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:44:41,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:44:41,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:44:41,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:44:41" (1/1) ... [2020-08-21 14:44:41,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a5a214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41, skipping insertion in model container [2020-08-21 14:44:41,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:44:41" (1/1) ... [2020-08-21 14:44:41,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:44:41,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:44:41,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:44:41,773 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:44:41,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:44:41,915 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:44:41,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41 WrapperNode [2020-08-21 14:44:41,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:44:41,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:44:41,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:44:41,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:44:41,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41" (1/1) ... [2020-08-21 14:44:41,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41" (1/1) ... [2020-08-21 14:44:41,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41" (1/1) ... [2020-08-21 14:44:41,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41" (1/1) ... [2020-08-21 14:44:41,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41" (1/1) ... [2020-08-21 14:44:41,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41" (1/1) ... [2020-08-21 14:44:41,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41" (1/1) ... [2020-08-21 14:44:42,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:44:42,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:44:42,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:44:42,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:44:42,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:44:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:44:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:44:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:44:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:44:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:44:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:44:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:44:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:44:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:44:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:44:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:44:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:44:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:44:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:44:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:44:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:44:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:44:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:44:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:44:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:44:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:44:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:44:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:44:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:44:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:44:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:44:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:44:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:44:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:44:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:44:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:44:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:44:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:44:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:44:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:44:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:44:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:44:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:44:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:44:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:44:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:44:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:44:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:44:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:44:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:44:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:44:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:44:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:44:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:44:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:44:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:44:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:44:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:44:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:44:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:44:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:44:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:44:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:44:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:44:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:44:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:44:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:44:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:44:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:44:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:44:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:44:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:44:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:44:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:44:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:44:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:44:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:44:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:44:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:44:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:44:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:44:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:44:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:44:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:44:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:44:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:44:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:44:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:44:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:44:43,133 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:44:43,134 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:44:43,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:44:43 BoogieIcfgContainer [2020-08-21 14:44:43,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:44:43,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:44:43,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:44:43,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:44:43,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:44:41" (1/3) ... [2020-08-21 14:44:43,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b2f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:44:43, skipping insertion in model container [2020-08-21 14:44:43,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:44:41" (2/3) ... [2020-08-21 14:44:43,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b2f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:44:43, skipping insertion in model container [2020-08-21 14:44:43,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:44:43" (3/3) ... [2020-08-21 14:44:43,153 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product02.cil.c [2020-08-21 14:44:43,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:44:43,174 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:44:43,189 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:44:43,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:44:43,213 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:44:43,213 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:44:43,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:44:43,214 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:44:43,214 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:44:43,214 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:44:43,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:44:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states. [2020-08-21 14:44:43,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 14:44:43,244 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:44:43,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:44:43,246 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:44:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:44:43,251 INFO L82 PathProgramCache]: Analyzing trace with hash 761454740, now seen corresponding path program 1 times [2020-08-21 14:44:43,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:44:43,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288220153] [2020-08-21 14:44:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:44:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:43,897 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:44:43,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:44:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:43,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:44:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:43,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:44:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:43,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:44:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:44:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:43,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:44:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:44,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:44:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:44:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:44:44,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288220153] [2020-08-21 14:44:44,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:44:44,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:44:44,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170897455] [2020-08-21 14:44:44,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:44:44,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:44:44,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:44:44,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:44:44,056 INFO L87 Difference]: Start difference. First operand 137 states. Second operand 3 states. [2020-08-21 14:44:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:44:45,029 INFO L93 Difference]: Finished difference Result 220 states and 294 transitions. [2020-08-21 14:44:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:44:45,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 14:44:45,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:44:45,045 INFO L225 Difference]: With dead ends: 220 [2020-08-21 14:44:45,045 INFO L226 Difference]: Without dead ends: 120 [2020-08-21 14:44:45,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:44:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-21 14:44:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2020-08-21 14:44:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-21 14:44:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-08-21 14:44:45,146 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 52 [2020-08-21 14:44:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:44:45,147 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-08-21 14:44:45,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:44:45,147 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-08-21 14:44:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 14:44:45,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:44:45,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:44:45,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:44:45,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:44:45,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:44:45,154 INFO L82 PathProgramCache]: Analyzing trace with hash -873378410, now seen corresponding path program 1 times [2020-08-21 14:44:45,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:44:45,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498992070] [2020-08-21 14:44:45,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:44:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:45,518 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:44:45,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:44:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:45,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:44:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:45,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:44:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:45,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:44:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:45,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:44:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:45,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:44:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 14:44:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:45,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:44:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:44:45,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498992070] [2020-08-21 14:44:45,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:44:45,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:44:45,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892997087] [2020-08-21 14:44:45,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:44:45,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:44:45,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:44:45,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:44:45,567 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 4 states. [2020-08-21 14:44:46,071 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:44:46,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:44:46,598 INFO L93 Difference]: Finished difference Result 149 states and 181 transitions. [2020-08-21 14:44:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:44:46,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 14:44:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:44:46,601 INFO L225 Difference]: With dead ends: 149 [2020-08-21 14:44:46,601 INFO L226 Difference]: Without dead ends: 104 [2020-08-21 14:44:46,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:44:46,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-21 14:44:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-08-21 14:44:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-21 14:44:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-08-21 14:44:46,637 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 53 [2020-08-21 14:44:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:44:46,638 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-08-21 14:44:46,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:44:46,638 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-08-21 14:44:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 14:44:46,640 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:44:46,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:44:46,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:44:46,641 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:44:46,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:44:46,641 INFO L82 PathProgramCache]: Analyzing trace with hash -646748837, now seen corresponding path program 1 times [2020-08-21 14:44:46,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:44:46,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022128093] [2020-08-21 14:44:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:44:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:46,987 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:44:46,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:44:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:47,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:44:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:47,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:44:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:47,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:44:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:47,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:44:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:47,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:44:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:44:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:44:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:44:47,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022128093] [2020-08-21 14:44:47,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:44:47,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:44:47,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251596586] [2020-08-21 14:44:47,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:44:47,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:44:47,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:44:47,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:44:47,094 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 8 states. [2020-08-21 14:44:47,498 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:44:47,843 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:44:48,075 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:44:48,313 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:44:49,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:44:49,068 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2020-08-21 14:44:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:44:49,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 14:44:49,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:44:49,071 INFO L225 Difference]: With dead ends: 162 [2020-08-21 14:44:49,071 INFO L226 Difference]: Without dead ends: 104 [2020-08-21 14:44:49,072 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 [2020-08-21 14:44:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-21 14:44:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-08-21 14:44:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-21 14:44:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-21 14:44:49,101 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 58 [2020-08-21 14:44:49,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:44:49,102 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-21 14:44:49,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:44:49,102 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-21 14:44:49,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 14:44:49,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:44:49,104 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] [2020-08-21 14:44:49,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:44:49,104 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:44:49,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:44:49,104 INFO L82 PathProgramCache]: Analyzing trace with hash 387624930, now seen corresponding path program 1 times [2020-08-21 14:44:49,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:44:49,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040730763] [2020-08-21 14:44:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:44:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,396 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:44:49,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:44:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:44:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:44:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:44:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:44:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:44:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:44:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:44:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 14:44:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:44:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:44:49,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040730763] [2020-08-21 14:44:49,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:44:49,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 14:44:49,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976136855] [2020-08-21 14:44:49,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:44:49,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:44:49,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:44:49,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:44:49,500 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 7 states. [2020-08-21 14:44:49,836 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:44:50,746 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:44:51,024 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:44:51,249 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:44:51,485 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:44:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:44:51,728 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2020-08-21 14:44:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 14:44:51,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-21 14:44:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:44:51,731 INFO L225 Difference]: With dead ends: 209 [2020-08-21 14:44:51,732 INFO L226 Difference]: Without dead ends: 151 [2020-08-21 14:44:51,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:44:51,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-21 14:44:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2020-08-21 14:44:51,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-21 14:44:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2020-08-21 14:44:51,806 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 61 [2020-08-21 14:44:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:44:51,807 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2020-08-21 14:44:51,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:44:51,807 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2020-08-21 14:44:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 14:44:51,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:44:51,817 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] [2020-08-21 14:44:51,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:44:51,818 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:44:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:44:51,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1045725272, now seen corresponding path program 1 times [2020-08-21 14:44:51,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:44:51,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501743029] [2020-08-21 14:44:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:44:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:44:51,888 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:44:51,888 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:44:51,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:44:51,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:44:51 BoogieIcfgContainer [2020-08-21 14:44:51,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:44:51,924 INFO L168 Benchmark]: Toolchain (without parser) took 10672.89 ms. Allocated memory was 140.5 MB in the beginning and 421.0 MB in the end (delta: 280.5 MB). Free memory was 102.6 MB in the beginning and 373.8 MB in the end (delta: -271.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-21 14:44:51,924 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 14:44:51,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.92 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 174.3 MB in the end (delta: -71.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:44:51,926 INFO L168 Benchmark]: Boogie Preprocessor took 87.02 ms. Allocated memory is still 203.9 MB. Free memory was 174.3 MB in the beginning and 170.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:44:51,927 INFO L168 Benchmark]: RCFGBuilder took 1138.03 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 170.4 MB in the beginning and 202.6 MB in the end (delta: -32.2 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:44:51,928 INFO L168 Benchmark]: TraceAbstraction took 8777.41 ms. Allocated memory was 237.0 MB in the beginning and 421.0 MB in the end (delta: 184.0 MB). Free memory was 202.6 MB in the beginning and 373.8 MB in the end (delta: -171.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:44:51,932 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.92 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 174.3 MB in the end (delta: -71.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.02 ms. Allocated memory is still 203.9 MB. Free memory was 174.3 MB in the beginning and 170.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1138.03 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 170.4 MB in the beginning and 202.6 MB in the end (delta: -32.2 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8777.41 ms. Allocated memory was 237.0 MB in the beginning and 421.0 MB in the end (delta: 184.0 MB). Free memory was 202.6 MB in the beginning and 373.8 MB in the end (delta: -171.3 MB). Peak memory consumption was 12.7 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: 8.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 6.2s, 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, 3.1s 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: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 88 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s 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...