/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:10:11,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:10:11,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:10:11,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:10:11,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:10:11,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:10:11,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:10:12,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:10:12,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:10:12,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:10:12,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:10:12,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:10:12,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:10:12,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:10:12,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:10:12,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:10:12,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:10:12,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:10:12,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:10:12,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:10:12,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:10:12,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:10:12,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:10:12,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:10:12,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:10:12,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:10:12,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:10:12,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:10:12,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:10:12,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:10:12,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:10:12,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:10:12,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:10:12,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:10:12,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:10:12,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:10:12,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:10:12,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:10:12,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:10:12,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:10:12,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:10:12,032 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 [2020-08-19 00:10:12,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:10:12,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:10:12,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:10:12,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:10:12,057 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:10:12,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:10:12,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:10:12,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:10:12,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:10:12,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:10:12,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:10:12,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:10:12,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:10:12,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:10:12,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:10:12,060 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:10:12,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:10:12,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:10:12,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:10:12,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:10:12,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:10:12,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:10:12,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:10:12,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:10:12,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:10:12,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:10:12,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:10:12,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:10:12,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:10:12,063 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=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:10:12,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:10:12,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:10:12,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:10:12,427 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:10:12,428 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:10:12,428 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-08-19 00:10:12,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f472aeea/887028c584e84e249f64b8edd80db6d1/FLAG2b4bb216c [2020-08-19 00:10:13,028 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:10:13,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-08-19 00:10:13,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f472aeea/887028c584e84e249f64b8edd80db6d1/FLAG2b4bb216c [2020-08-19 00:10:13,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f472aeea/887028c584e84e249f64b8edd80db6d1 [2020-08-19 00:10:13,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:10:13,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:10:13,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:10:13,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:10:13,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:10:13,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:10:13" (1/1) ... [2020-08-19 00:10:13,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2260ab44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13, skipping insertion in model container [2020-08-19 00:10:13,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:10:13" (1/1) ... [2020-08-19 00:10:13,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:10:13,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:10:13,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:10:13,811 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:10:13,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:10:13,925 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:10:13,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13 WrapperNode [2020-08-19 00:10:13,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:10:13,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:10:13,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:10:13,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:10:13,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13" (1/1) ... [2020-08-19 00:10:13,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13" (1/1) ... [2020-08-19 00:10:13,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13" (1/1) ... [2020-08-19 00:10:13,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13" (1/1) ... [2020-08-19 00:10:13,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13" (1/1) ... [2020-08-19 00:10:14,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13" (1/1) ... [2020-08-19 00:10:14,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13" (1/1) ... [2020-08-19 00:10:14,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:10:14,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:10:14,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:10:14,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:10:14,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13" (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 [2020-08-19 00:10:14,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:10:14,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:10:14,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:10:14,083 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:10:14,084 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:10:14,084 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:10:14,084 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:10:14,084 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:10:14,084 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:10:14,084 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:10:14,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:10:14,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:10:14,085 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:10:14,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:10:14,085 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:10:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:10:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:10:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:10:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:10:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:10:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:10:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:10:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:10:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:10:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:10:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:10:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:10:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:10:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:10:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:10:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:10:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:10:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:10:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:10:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:10:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:10:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:10:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:10:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:10:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:10:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:10:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:10:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:10:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:10:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:10:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:10:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:10:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:10:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:10:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:10:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:10:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:10:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:10:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:10:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:10:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:10:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:10:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:10:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:10:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:10:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:10:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:10:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:10:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:10:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:10:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:10:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:10:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:10:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:10:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:10:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:10:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:10:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:10:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:10:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:10:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:10:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:10:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:10:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:10:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:10:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:10:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:10:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:10:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:10:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:10:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:10:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:10:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:10:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:10:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:10:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:10:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:10:15,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:10:15,316 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:10:15,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:10:15 BoogieIcfgContainer [2020-08-19 00:10:15,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:10:15,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:10:15,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:10:15,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:10:15,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:10:13" (1/3) ... [2020-08-19 00:10:15,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79246d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:10:15, skipping insertion in model container [2020-08-19 00:10:15,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:10:13" (2/3) ... [2020-08-19 00:10:15,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79246d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:10:15, skipping insertion in model container [2020-08-19 00:10:15,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:10:15" (3/3) ... [2020-08-19 00:10:15,330 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product27.cil.c [2020-08-19 00:10:15,341 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:10:15,351 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:10:15,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:10:15,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:10:15,393 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:10:15,393 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:10:15,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:10:15,394 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:10:15,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:10:15,394 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:10:15,394 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:10:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-19 00:10:15,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:10:15,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:15,430 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] [2020-08-19 00:10:15,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:15,436 INFO L82 PathProgramCache]: Analyzing trace with hash -527888635, now seen corresponding path program 1 times [2020-08-19 00:10:15,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:15,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511853599] [2020-08-19 00:10:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:16,097 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:16,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:16,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:16,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:16,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:16,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:16,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:10:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:10:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:16,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:10:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:16,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511853599] [2020-08-19 00:10:16,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:16,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:10:16,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150273818] [2020-08-19 00:10:16,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:10:16,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:16,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:10:16,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:10:16,229 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-19 00:10:17,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:17,365 INFO L93 Difference]: Finished difference Result 273 states and 360 transitions. [2020-08-19 00:10:17,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:10:17,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 00:10:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:17,382 INFO L225 Difference]: With dead ends: 273 [2020-08-19 00:10:17,382 INFO L226 Difference]: Without dead ends: 148 [2020-08-19 00:10:17,387 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 [2020-08-19 00:10:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-19 00:10:17,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-08-19 00:10:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-19 00:10:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-19 00:10:17,475 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 52 [2020-08-19 00:10:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:17,476 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-19 00:10:17,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:10:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-19 00:10:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 00:10:17,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:17,480 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] [2020-08-19 00:10:17,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:10:17,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:17,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:17,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1019297795, now seen corresponding path program 1 times [2020-08-19 00:10:17,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:17,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111477190] [2020-08-19 00:10:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:17,819 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:17,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:17,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:17,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:10:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:10:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:17,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:10:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:17,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111477190] [2020-08-19 00:10:17,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:17,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:10:17,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126672216] [2020-08-19 00:10:17,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:10:17,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:17,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:10:17,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:10:17,930 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states. [2020-08-19 00:10:18,341 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:10:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:19,045 INFO L93 Difference]: Finished difference Result 200 states and 243 transitions. [2020-08-19 00:10:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:10:19,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 00:10:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:19,049 INFO L225 Difference]: With dead ends: 200 [2020-08-19 00:10:19,049 INFO L226 Difference]: Without dead ends: 132 [2020-08-19 00:10:19,052 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 [2020-08-19 00:10:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-19 00:10:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2020-08-19 00:10:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-19 00:10:19,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-08-19 00:10:19,123 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 53 [2020-08-19 00:10:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:19,123 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-08-19 00:10:19,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:10:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-08-19 00:10:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:10:19,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:19,134 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] [2020-08-19 00:10:19,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:10:19,135 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:19,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1975816461, now seen corresponding path program 1 times [2020-08-19 00:10:19,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:19,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880261196] [2020-08-19 00:10:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:19,498 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:19,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:19,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:19,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:19,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:10:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:19,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:10:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:19,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:10:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:19,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880261196] [2020-08-19 00:10:19,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:19,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:10:19,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563070635] [2020-08-19 00:10:19,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:10:19,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:19,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:10:19,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:10:19,621 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 8 states. [2020-08-19 00:10:19,983 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:20,307 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:20,544 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:20,789 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:21,495 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:10:22,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:22,920 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2020-08-19 00:10:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:10:22,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 00:10:22,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:22,931 INFO L225 Difference]: With dead ends: 375 [2020-08-19 00:10:22,931 INFO L226 Difference]: Without dead ends: 292 [2020-08-19 00:10:22,932 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 [2020-08-19 00:10:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-19 00:10:23,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238. [2020-08-19 00:10:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-19 00:10:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2020-08-19 00:10:23,008 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 57 [2020-08-19 00:10:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:23,008 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2020-08-19 00:10:23,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:10:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2020-08-19 00:10:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 00:10:23,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:23,010 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] [2020-08-19 00:10:23,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:10:23,011 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:23,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:23,011 INFO L82 PathProgramCache]: Analyzing trace with hash -872029399, now seen corresponding path program 1 times [2020-08-19 00:10:23,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:23,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578580852] [2020-08-19 00:10:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,376 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:10:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:10:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:10:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:10:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:10:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:10:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:10:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:10:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:10:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:10:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:10:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:10:23,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578580852] [2020-08-19 00:10:23,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:10:23,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:10:23,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217367656] [2020-08-19 00:10:23,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:10:23,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:10:23,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:10:23,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:10:23,484 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand 8 states. [2020-08-19 00:10:23,846 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:25,069 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:25,378 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:25,615 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:10:25,880 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:10:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:10:26,436 INFO L93 Difference]: Finished difference Result 726 states and 953 transitions. [2020-08-19 00:10:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:10:26,437 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 00:10:26,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:10:26,443 INFO L225 Difference]: With dead ends: 726 [2020-08-19 00:10:26,443 INFO L226 Difference]: Without dead ends: 512 [2020-08-19 00:10:26,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:10:26,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-08-19 00:10:26,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 449. [2020-08-19 00:10:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-19 00:10:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 555 transitions. [2020-08-19 00:10:26,591 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 555 transitions. Word has length 63 [2020-08-19 00:10:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:10:26,591 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 555 transitions. [2020-08-19 00:10:26,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:10:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 555 transitions. [2020-08-19 00:10:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 00:10:26,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:10:26,595 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] [2020-08-19 00:10:26,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:10:26,595 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:10:26,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:10:26,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1867456273, now seen corresponding path program 1 times [2020-08-19 00:10:26,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:10:26,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240864182] [2020-08-19 00:10:26,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:10:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:10:26,655 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:10:26,655 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:10:26,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:10:26,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:10:26 BoogieIcfgContainer [2020-08-19 00:10:26,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:10:26,682 INFO L168 Benchmark]: Toolchain (without parser) took 13411.82 ms. Allocated memory was 138.9 MB in the beginning and 422.6 MB in the end (delta: 283.6 MB). Free memory was 101.2 MB in the beginning and 146.9 MB in the end (delta: -45.7 MB). Peak memory consumption was 237.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:26,683 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:10:26,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.46 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 101.0 MB in the beginning and 165.9 MB in the end (delta: -64.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:26,685 INFO L168 Benchmark]: Boogie Preprocessor took 94.36 ms. Allocated memory is still 199.8 MB. Free memory was 165.9 MB in the beginning and 161.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:26,686 INFO L168 Benchmark]: RCFGBuilder took 1299.76 ms. Allocated memory was 199.8 MB in the beginning and 231.7 MB in the end (delta: 32.0 MB). Free memory was 161.3 MB in the beginning and 192.5 MB in the end (delta: -31.2 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:26,687 INFO L168 Benchmark]: TraceAbstraction took 11358.13 ms. Allocated memory was 231.7 MB in the beginning and 422.6 MB in the end (delta: 190.8 MB). Free memory was 191.0 MB in the beginning and 146.9 MB in the end (delta: 44.1 MB). Peak memory consumption was 234.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:10:26,690 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.46 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 101.0 MB in the beginning and 165.9 MB in the end (delta: -64.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.36 ms. Allocated memory is still 199.8 MB. Free memory was 165.9 MB in the beginning and 161.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1299.76 ms. Allocated memory was 199.8 MB in the beginning and 231.7 MB in the end (delta: 32.0 MB). Free memory was 161.3 MB in the beginning and 192.5 MB in the end (delta: -31.2 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11358.13 ms. Allocated memory was 231.7 MB in the beginning and 422.6 MB in the end (delta: 190.8 MB). Free memory was 191.0 MB in the beginning and 146.9 MB in the end (delta: 44.1 MB). Peak memory consumption was 234.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 346]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L558] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L755] int waterLevel = 1; [L756] int methaneLevelCritical = 0; [L844] int cleanupTimeShifts = 4; [L917] int retValue_acc ; [L918] int tmp ; [L922] FCALL select_helpers() [L923] FCALL select_features() [L924] CALL, EXPR valid_product() [L380] int retValue_acc ; [L383] retValue_acc = 1 [L384] return (retValue_acc); [L924] RET, EXPR valid_product() [L924] tmp = valid_product() [L926] COND TRUE \read(tmp) [L928] FCALL setup() [L929] CALL runTest() [L911] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L773] COND TRUE waterLevel < 2 [L774] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___2)) [L89] tmp___1 = __VERIFIER_nondet_int() [L91] COND TRUE \read(tmp___1) [L93] CALL stopSystem() [L294] COND FALSE !(\read(pumpRunning)) [L301] systemActive = 0 [L93] RET stopSystem() [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND FALSE !(\read(systemActive)) [L143] CALL __utac_acc__Specification3_spec__1() [L309] int tmp ; [L310] int tmp___0 ; [L311] int tmp___1 ; [L315] CALL, EXPR isMethaneLevelCritical() [L794] int retValue_acc ; [L797] retValue_acc = methaneLevelCritical [L798] return (retValue_acc); [L315] RET, EXPR isMethaneLevelCritical() [L315] tmp = isMethaneLevelCritical() [L317] COND FALSE !(\read(tmp)) [L321] CALL, EXPR getWaterLevel() [L826] int retValue_acc ; [L829] retValue_acc = waterLevel [L830] return (retValue_acc); [L321] RET, EXPR getWaterLevel() [L321] tmp___0 = getWaterLevel() [L323] COND TRUE tmp___0 == 2 [L325] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L325] RET, EXPR isPumpRunning() [L325] tmp___1 = isPumpRunning() [L327] COND FALSE !(\read(tmp___1)) [L331] CALL __automaton_fail() [L346] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 683 SDslu, 306 SDs, 0 SdLazy, 1673 SolverSat, 407 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s 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=449occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 174 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 61524 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...