/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_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:08:19,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:08:19,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:08:19,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:08:19,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:08:19,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:08:19,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:08:19,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:08:19,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:08:19,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:08:19,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:08:19,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:08:19,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:08:19,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:08:19,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:08:19,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:08:19,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:08:19,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:08:19,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:08:19,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:08:19,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:08:19,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:08:19,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:08:19,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:08:19,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:08:19,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:08:19,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:08:19,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:08:19,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:08:19,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:08:19,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:08:19,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:08:19,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:08:19,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:08:19,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:08:19,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:08:19,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:08:19,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:08:19,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:08:19,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:08:19,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:08:19,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:08:19,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:08:19,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:08:19,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:08:19,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:08:19,897 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:08:19,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:08:19,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:08:19,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:08:19,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:08:19,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:08:19,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:08:19,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:08:19,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:08:19,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:08:19,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:08:19,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:08:19,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:08:19,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:08:19,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:08:19,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:08:19,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:08:19,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:08:19,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:08:19,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:08:19,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:08:19,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:08:19,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:08:19,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:08:19,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:08:19,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:08:20,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:08:20,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:08:20,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:08:20,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:08:20,211 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:08:20,212 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-08-18 20:08:20,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15a1d0723/4094aeb59c2d476ebdbea60c57865ec9/FLAGbdcadca2a [2020-08-18 20:08:20,828 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:08:20,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product40.cil.c [2020-08-18 20:08:20,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15a1d0723/4094aeb59c2d476ebdbea60c57865ec9/FLAGbdcadca2a [2020-08-18 20:08:21,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/15a1d0723/4094aeb59c2d476ebdbea60c57865ec9 [2020-08-18 20:08:21,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:08:21,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:08:21,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:08:21,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:08:21,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:08:21,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:08:21" (1/1) ... [2020-08-18 20:08:21,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e57099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21, skipping insertion in model container [2020-08-18 20:08:21,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:08:21" (1/1) ... [2020-08-18 20:08:21,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:08:21,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:08:21,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:08:21,710 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:08:21,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:08:21,870 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:08:21,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21 WrapperNode [2020-08-18 20:08:21,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:08:21,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:08:21,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:08:21,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:08:21,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21" (1/1) ... [2020-08-18 20:08:21,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21" (1/1) ... [2020-08-18 20:08:21,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21" (1/1) ... [2020-08-18 20:08:21,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21" (1/1) ... [2020-08-18 20:08:21,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21" (1/1) ... [2020-08-18 20:08:21,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21" (1/1) ... [2020-08-18 20:08:21,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21" (1/1) ... [2020-08-18 20:08:21,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:08:21,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:08:21,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:08:21,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:08:21,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:08:22,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:08:22,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:08:22,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:08:22,031 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:08:22,031 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:08:22,031 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:08:22,031 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:08:22,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:08:22,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:08:22,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:08:22,032 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:08:22,032 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:08:22,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:08:22,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:08:22,033 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:08:22,033 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:08:22,033 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:08:22,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:08:22,033 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:08:22,033 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:08:22,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:08:22,034 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:08:22,034 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:08:22,034 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:08:22,034 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:08:22,034 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:08:22,035 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:08:22,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:08:22,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:08:22,035 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:08:22,035 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:08:22,035 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:08:22,036 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:08:22,036 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:08:22,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:08:22,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:08:22,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:08:22,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:08:22,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:08:22,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:08:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:08:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:08:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:08:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:08:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:08:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:08:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:08:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:08:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:08:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:08:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:08:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:08:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:08:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:08:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:08:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:08:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:08:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:08:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:08:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:08:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:08:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:08:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:08:22,040 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:08:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:08:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:08:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:08:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:08:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:08:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:08:22,041 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:08:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:08:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:08:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 20:08:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:08:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:08:22,042 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:08:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:08:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:08:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:08:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:08:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:08:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:08:22,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:08:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:08:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:08:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:08:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:08:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:08:22,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:08:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:08:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:08:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:08:22,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:08:23,104 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:08:23,105 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:08:23,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:08:23 BoogieIcfgContainer [2020-08-18 20:08:23,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:08:23,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:08:23,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:08:23,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:08:23,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:08:21" (1/3) ... [2020-08-18 20:08:23,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4571b554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:08:23, skipping insertion in model container [2020-08-18 20:08:23,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:21" (2/3) ... [2020-08-18 20:08:23,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4571b554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:08:23, skipping insertion in model container [2020-08-18 20:08:23,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:08:23" (3/3) ... [2020-08-18 20:08:23,119 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2020-08-18 20:08:23,129 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:08:23,137 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:08:23,151 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:08:23,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:08:23,176 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:08:23,176 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:08:23,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:08:23,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:08:23,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:08:23,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:08:23,177 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:08:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-18 20:08:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:08:23,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:23,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:08:23,214 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:23,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:23,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1613949641, now seen corresponding path program 1 times [2020-08-18 20:08:23,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:23,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952290526] [2020-08-18 20:08:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:23,967 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:24,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:24,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:24,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:24,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:08:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:24,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:08:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:08:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:24,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952290526] [2020-08-18 20:08:24,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:24,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:08:24,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361988124] [2020-08-18 20:08:24,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:08:24,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:24,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:08:24,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:08:24,156 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-18 20:08:25,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:25,415 INFO L93 Difference]: Finished difference Result 322 states and 421 transitions. [2020-08-18 20:08:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:08:25,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 20:08:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:25,444 INFO L225 Difference]: With dead ends: 322 [2020-08-18 20:08:25,445 INFO L226 Difference]: Without dead ends: 174 [2020-08-18 20:08:25,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:08:25,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-18 20:08:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-18 20:08:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 20:08:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-18 20:08:25,560 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-08-18 20:08:25,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:25,561 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-18 20:08:25,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:08:25,561 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-18 20:08:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 20:08:25,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:25,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:08:25,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:08:25,570 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:25,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:25,573 INFO L82 PathProgramCache]: Analyzing trace with hash -404683850, now seen corresponding path program 1 times [2020-08-18 20:08:25,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:25,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094650382] [2020-08-18 20:08:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:25,979 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:26,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:26,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:26,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:26,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:08:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:26,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:08:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:26,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:08:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:26,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094650382] [2020-08-18 20:08:26,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:26,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:08:26,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977299695] [2020-08-18 20:08:26,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:08:26,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:26,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:08:26,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:08:26,025 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 4 states. [2020-08-18 20:08:26,451 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:27,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:27,357 INFO L93 Difference]: Finished difference Result 245 states and 300 transitions. [2020-08-18 20:08:27,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:08:27,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 20:08:27,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:27,362 INFO L225 Difference]: With dead ends: 245 [2020-08-18 20:08:27,362 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 20:08:27,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:08:27,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 20:08:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 130. [2020-08-18 20:08:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 20:08:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-18 20:08:27,423 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 53 [2020-08-18 20:08:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:27,424 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-18 20:08:27,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:08:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-18 20:08:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:08:27,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:27,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:08:27,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:08:27,427 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:27,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1069064851, now seen corresponding path program 1 times [2020-08-18 20:08:27,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:27,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819902199] [2020-08-18 20:08:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:27,768 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:27,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:27,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:08:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:27,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:08:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:27,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:08:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:27,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819902199] [2020-08-18 20:08:27,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:27,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:08:27,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975408907] [2020-08-18 20:08:27,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:08:27,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:27,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:08:27,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:08:27,883 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 8 states. [2020-08-18 20:08:28,293 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:28,650 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:28,907 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:29,148 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:29,913 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:31,902 INFO L93 Difference]: Finished difference Result 451 states and 560 transitions. [2020-08-18 20:08:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:08:31,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 20:08:31,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:31,908 INFO L225 Difference]: With dead ends: 451 [2020-08-18 20:08:31,909 INFO L226 Difference]: Without dead ends: 345 [2020-08-18 20:08:31,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:08:31,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-08-18 20:08:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 280. [2020-08-18 20:08:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-08-18 20:08:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 339 transitions. [2020-08-18 20:08:32,008 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 339 transitions. Word has length 58 [2020-08-18 20:08:32,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:32,008 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 339 transitions. [2020-08-18 20:08:32,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:08:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 339 transitions. [2020-08-18 20:08:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 20:08:32,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:32,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:08:32,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:08:32,011 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:32,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1575246874, now seen corresponding path program 1 times [2020-08-18 20:08:32,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:32,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306437153] [2020-08-18 20:08:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,308 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:08:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:08:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 20:08:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 20:08:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:32,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306437153] [2020-08-18 20:08:32,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:32,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:08:32,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377717001] [2020-08-18 20:08:32,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:08:32,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:32,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:08:32,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:08:32,414 INFO L87 Difference]: Start difference. First operand 280 states and 339 transitions. Second operand 8 states. [2020-08-18 20:08:32,744 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:34,081 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:34,439 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:34,716 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:34,980 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:35,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:35,794 INFO L93 Difference]: Finished difference Result 863 states and 1137 transitions. [2020-08-18 20:08:35,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:08:35,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 20:08:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:35,804 INFO L225 Difference]: With dead ends: 863 [2020-08-18 20:08:35,805 INFO L226 Difference]: Without dead ends: 607 [2020-08-18 20:08:35,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:08:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2020-08-18 20:08:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 537. [2020-08-18 20:08:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-08-18 20:08:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 663 transitions. [2020-08-18 20:08:35,966 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 663 transitions. Word has length 63 [2020-08-18 20:08:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:35,967 INFO L479 AbstractCegarLoop]: Abstraction has 537 states and 663 transitions. [2020-08-18 20:08:35,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:08:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 663 transitions. [2020-08-18 20:08:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 20:08:35,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:35,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:08:35,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:08:35,971 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:35,972 INFO L82 PathProgramCache]: Analyzing trace with hash 730381356, now seen corresponding path program 1 times [2020-08-18 20:08:35,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:35,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852554289] [2020-08-18 20:08:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:08:36,028 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:08:36,028 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:08:36,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:08:36,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:08:36 BoogieIcfgContainer [2020-08-18 20:08:36,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:08:36,061 INFO L168 Benchmark]: Toolchain (without parser) took 14880.21 ms. Allocated memory was 140.0 MB in the beginning and 465.6 MB in the end (delta: 325.6 MB). Free memory was 101.7 MB in the beginning and 390.6 MB in the end (delta: -288.9 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:36,062 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:08:36,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.20 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 170.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:36,064 INFO L168 Benchmark]: Boogie Preprocessor took 93.01 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:36,065 INFO L168 Benchmark]: RCFGBuilder took 1145.82 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 195.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:36,066 INFO L168 Benchmark]: TraceAbstraction took 12948.08 ms. Allocated memory was 235.9 MB in the beginning and 465.6 MB in the end (delta: 229.6 MB). Free memory was 195.2 MB in the beginning and 390.6 MB in the end (delta: -195.4 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:08:36,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.20 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 170.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.01 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1145.82 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 195.2 MB in the end (delta: -28.6 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12948.08 ms. Allocated memory was 235.9 MB in the beginning and 465.6 MB in the end (delta: 229.6 MB). Free memory was 195.2 MB in the beginning and 390.6 MB in the end (delta: -195.4 MB). Peak memory consumption was 34.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 221]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int waterLevel = 1; [L230] int methaneLevelCritical = 0; [L327] int pumpRunning = 0; [L328] int systemActive = 1; [L766] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L529] int splverifierCounter ; [L530] int tmp ; [L531] int tmp___0 ; [L532] int tmp___1 ; [L533] int tmp___2 ; [L536] splverifierCounter = 0 [L538] COND TRUE 1 [L540] COND TRUE splverifierCounter < 4 [L546] tmp = __VERIFIER_nondet_int() [L548] COND TRUE \read(tmp) [L550] CALL waterRise() [L247] COND TRUE waterLevel < 2 [L248] waterLevel = waterLevel + 1 [L550] RET waterRise() [L556] tmp___0 = __VERIFIER_nondet_int() [L558] COND FALSE !(\read(tmp___0)) [L566] tmp___2 = __VERIFIER_nondet_int() [L568] COND FALSE !(\read(tmp___2)) [L574] tmp___1 = __VERIFIER_nondet_int() [L576] COND TRUE \read(tmp___1) [L578] CALL stopSystem() [L508] COND FALSE !(\read(pumpRunning)) [L515] systemActive = 0 [L578] RET stopSystem() [L585] CALL timeShift() [L334] COND FALSE !(\read(pumpRunning)) [L341] COND FALSE !(\read(systemActive)) [L349] CALL __utac_acc__Specification3_spec__1() [L184] int tmp ; [L185] int tmp___0 ; [L186] int tmp___1 ; [L190] CALL, EXPR isMethaneLevelCritical() [L268] int retValue_acc ; [L271] retValue_acc = methaneLevelCritical [L272] return (retValue_acc); [L190] RET, EXPR isMethaneLevelCritical() [L190] tmp = isMethaneLevelCritical() [L192] COND FALSE !(\read(tmp)) [L196] CALL, EXPR getWaterLevel() [L300] int retValue_acc ; [L303] retValue_acc = waterLevel [L304] return (retValue_acc); [L196] RET, EXPR getWaterLevel() [L196] tmp___0 = getWaterLevel() [L198] COND TRUE tmp___0 == 2 [L200] CALL, EXPR isPumpRunning() [L441] int retValue_acc ; [L444] retValue_acc = pumpRunning [L445] return (retValue_acc); [L200] RET, EXPR isPumpRunning() [L200] tmp___1 = isPumpRunning() [L202] COND FALSE !(\read(tmp___1)) [L206] CALL __automaton_fail() [L221] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 531 SDtfs, 757 SDslu, 419 SDs, 0 SdLazy, 2075 SolverSat, 445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=537occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...