/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:35:35,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:35:36,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:35:36,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:35:36,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:35:36,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:35:36,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:35:36,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:35:36,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:35:36,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:35:36,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:35:36,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:35:36,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:35:36,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:35:36,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:35:36,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:35:36,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:35:36,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:35:36,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:35:36,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:35:36,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:35:36,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:35:36,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:35:36,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:35:36,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:35:36,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:35:36,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:35:36,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:35:36,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:35:36,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:35:36,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:35:36,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:35:36,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:35:36,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:35:36,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:35:36,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:35:36,056 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:35:36,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:35:36,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:35:36,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:35:36,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:35:36,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:35:36,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:35:36,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:35:36,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:35:36,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:35:36,083 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:35:36,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:35:36,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:35:36,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:35:36,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:35:36,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:35:36,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:35:36,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:35:36,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:35:36,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:35:36,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:35:36,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:35:36,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:35:36,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:35:36,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:35:36,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:35:36,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:35:36,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:35:36,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:35:36,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:35:36,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:35:36,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:35:36,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:35:36,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:35:36,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:35:36,088 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=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:35:36,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:35:36,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:35:36,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:35:36,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:35:36,449 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:35:36,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2020-08-21 19:35:36,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2f7b71be/40646a2e100f454797bde9baabe06415/FLAG0bf159221 [2020-08-21 19:35:36,979 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:35:36,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2020-08-21 19:35:36,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2f7b71be/40646a2e100f454797bde9baabe06415/FLAG0bf159221 [2020-08-21 19:35:37,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2f7b71be/40646a2e100f454797bde9baabe06415 [2020-08-21 19:35:37,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:35:37,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:35:37,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:35:37,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:35:37,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:35:37,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:35:37" (1/1) ... [2020-08-21 19:35:37,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295985fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:37, skipping insertion in model container [2020-08-21 19:35:37,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:35:37" (1/1) ... [2020-08-21 19:35:37,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:35:37,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:35:37,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:35:37,763 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:35:38,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:35:38,069 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:35:38,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38 WrapperNode [2020-08-21 19:35:38,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:35:38,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:35:38,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:35:38,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:35:38,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38" (1/1) ... [2020-08-21 19:35:38,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38" (1/1) ... [2020-08-21 19:35:38,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38" (1/1) ... [2020-08-21 19:35:38,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38" (1/1) ... [2020-08-21 19:35:38,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38" (1/1) ... [2020-08-21 19:35:38,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38" (1/1) ... [2020-08-21 19:35:38,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38" (1/1) ... [2020-08-21 19:35:38,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:35:38,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:35:38,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:35:38,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:35:38,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:35:38,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:35:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:35:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:35:38,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:35:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:35:38,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:35:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:35:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:35:38,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:35:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 19:35:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:35:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:35:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:35:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:35:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:35:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:35:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:35:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:35:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:35:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:35:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:35:38,263 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:35:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:35:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:35:38,264 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:35:38,266 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:35:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:35:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:35:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:35:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:35:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 19:35:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:35:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:35:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:35:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:35:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:35:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:35:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:35:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:35:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:35:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:35:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:35:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:35:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:35:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:35:38,269 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:35:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:35:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:35:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:35:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:35:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:35:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:35:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:35:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:35:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:35:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:35:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:35:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:35:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:35:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 19:35:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:35:38,271 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:35:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:35:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:35:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:35:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:35:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:35:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:35:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:35:38,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:35:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:35:38,273 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:35:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:35:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:35:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:35:38,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:35:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:35:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:35:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:35:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:35:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:35:38,275 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:35:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:35:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 19:35:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:35:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:35:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:35:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 19:35:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:35:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:35:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:35:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:35:39,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:35:39,342 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:35:39,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:35:39 BoogieIcfgContainer [2020-08-21 19:35:39,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:35:39,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:35:39,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:35:39,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:35:39,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:35:37" (1/3) ... [2020-08-21 19:35:39,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d41728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:35:39, skipping insertion in model container [2020-08-21 19:35:39,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:38" (2/3) ... [2020-08-21 19:35:39,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d41728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:35:39, skipping insertion in model container [2020-08-21 19:35:39,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:35:39" (3/3) ... [2020-08-21 19:35:39,356 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product43.cil.c [2020-08-21 19:35:39,366 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:35:39,375 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:35:39,389 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:35:39,415 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:35:39,416 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:35:39,416 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:35:39,416 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:35:39,416 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:35:39,416 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:35:39,416 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:35:39,417 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:35:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-08-21 19:35:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 19:35:39,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:39,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:39,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:39,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:39,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1046515037, now seen corresponding path program 1 times [2020-08-21 19:35:39,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:39,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512045090] [2020-08-21 19:35:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:40,230 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:40,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:40,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:40,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:40,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:35:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:35:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:40,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:35:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:40,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512045090] [2020-08-21 19:35:40,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:40,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:35:40,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685964889] [2020-08-21 19:35:40,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:35:40,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:40,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:35:40,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:35:40,365 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 3 states. [2020-08-21 19:35:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:41,591 INFO L93 Difference]: Finished difference Result 307 states and 398 transitions. [2020-08-21 19:35:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:35:41,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 19:35:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:41,609 INFO L225 Difference]: With dead ends: 307 [2020-08-21 19:35:41,610 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 19:35:41,615 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 [2020-08-21 19:35:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 19:35:41,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 132. [2020-08-21 19:35:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-21 19:35:41,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2020-08-21 19:35:41,706 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 52 [2020-08-21 19:35:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:41,707 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2020-08-21 19:35:41,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:35:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2020-08-21 19:35:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 19:35:41,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:41,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:41,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:35:41,711 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash -503992923, now seen corresponding path program 1 times [2020-08-21 19:35:41,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:41,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005811366] [2020-08-21 19:35:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,074 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:42,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:35:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:35:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 19:35:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:42,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005811366] [2020-08-21 19:35:42,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:42,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:35:42,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921953745] [2020-08-21 19:35:42,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:35:42,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:42,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:35:42,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:35:42,122 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand 4 states. [2020-08-21 19:35:42,521 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:35:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:43,268 INFO L93 Difference]: Finished difference Result 231 states and 279 transitions. [2020-08-21 19:35:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:35:43,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 19:35:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:43,276 INFO L225 Difference]: With dead ends: 231 [2020-08-21 19:35:43,276 INFO L226 Difference]: Without dead ends: 150 [2020-08-21 19:35:43,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:35:43,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-08-21 19:35:43,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2020-08-21 19:35:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-21 19:35:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2020-08-21 19:35:43,331 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 53 [2020-08-21 19:35:43,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:43,331 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2020-08-21 19:35:43,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:35:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2020-08-21 19:35:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 19:35:43,334 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:43,334 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] [2020-08-21 19:35:43,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:35:43,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:43,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:43,335 INFO L82 PathProgramCache]: Analyzing trace with hash -709646157, now seen corresponding path program 1 times [2020-08-21 19:35:43,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:43,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089323755] [2020-08-21 19:35:43,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:43,660 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:43,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:43,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:43,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:43,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:35:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:43,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:35:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:43,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:35:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:43,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089323755] [2020-08-21 19:35:43,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:43,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:35:43,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797344982] [2020-08-21 19:35:43,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:35:43,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:43,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:35:43,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:35:43,736 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 8 states. [2020-08-21 19:35:44,089 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:44,386 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:44,648 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:44,863 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:45,620 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:35:47,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:47,315 INFO L93 Difference]: Finished difference Result 427 states and 523 transitions. [2020-08-21 19:35:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:35:47,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 19:35:47,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:47,326 INFO L225 Difference]: With dead ends: 427 [2020-08-21 19:35:47,326 INFO L226 Difference]: Without dead ends: 328 [2020-08-21 19:35:47,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:35:47,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-08-21 19:35:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 258. [2020-08-21 19:35:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-21 19:35:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2020-08-21 19:35:47,404 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 57 [2020-08-21 19:35:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:47,404 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2020-08-21 19:35:47,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:35:47,405 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2020-08-21 19:35:47,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 19:35:47,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:47,408 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] [2020-08-21 19:35:47,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:35:47,408 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:47,409 INFO L82 PathProgramCache]: Analyzing trace with hash 532138272, now seen corresponding path program 1 times [2020-08-21 19:35:47,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:47,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492815719] [2020-08-21 19:35:47,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,690 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:47,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:35:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:35:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 19:35:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 19:35:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:47,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492815719] [2020-08-21 19:35:47,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:47,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:35:47,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486866069] [2020-08-21 19:35:47,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:35:47,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:47,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:35:47,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:35:47,827 INFO L87 Difference]: Start difference. First operand 258 states and 307 transitions. Second operand 8 states. [2020-08-21 19:35:48,214 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:49,432 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:49,722 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:49,987 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:50,230 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:51,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:51,075 INFO L93 Difference]: Finished difference Result 794 states and 1027 transitions. [2020-08-21 19:35:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 19:35:51,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 19:35:51,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:51,083 INFO L225 Difference]: With dead ends: 794 [2020-08-21 19:35:51,083 INFO L226 Difference]: Without dead ends: 560 [2020-08-21 19:35:51,085 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 [2020-08-21 19:35:51,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-08-21 19:35:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 493. [2020-08-21 19:35:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-08-21 19:35:51,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 597 transitions. [2020-08-21 19:35:51,203 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 597 transitions. Word has length 63 [2020-08-21 19:35:51,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:51,204 INFO L479 AbstractCegarLoop]: Abstraction has 493 states and 597 transitions. [2020-08-21 19:35:51,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:35:51,204 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 597 transitions. [2020-08-21 19:35:51,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 19:35:51,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:51,209 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] [2020-08-21 19:35:51,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:35:51,209 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:51,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:51,210 INFO L82 PathProgramCache]: Analyzing trace with hash -389958042, now seen corresponding path program 1 times [2020-08-21 19:35:51,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:51,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028180044] [2020-08-21 19:35:51,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:35:51,270 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:35:51,270 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:35:51,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:35:51,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:35:51 BoogieIcfgContainer [2020-08-21 19:35:51,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:35:51,298 INFO L168 Benchmark]: Toolchain (without parser) took 13998.39 ms. Allocated memory was 137.9 MB in the beginning and 442.0 MB in the end (delta: 304.1 MB). Free memory was 100.5 MB in the beginning and 172.8 MB in the end (delta: -72.3 MB). Peak memory consumption was 231.8 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:51,298 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:35:51,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 769.83 ms. Allocated memory was 137.9 MB in the beginning and 204.5 MB in the end (delta: 66.6 MB). Free memory was 100.1 MB in the beginning and 174.5 MB in the end (delta: -74.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:51,300 INFO L168 Benchmark]: Boogie Preprocessor took 110.65 ms. Allocated memory is still 204.5 MB. Free memory was 174.5 MB in the beginning and 170.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:51,301 INFO L168 Benchmark]: RCFGBuilder took 1165.91 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 170.1 MB in the beginning and 200.6 MB in the end (delta: -30.5 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:51,302 INFO L168 Benchmark]: TraceAbstraction took 11947.23 ms. Allocated memory was 234.4 MB in the beginning and 442.0 MB in the end (delta: 207.6 MB). Free memory was 199.2 MB in the beginning and 172.8 MB in the end (delta: 26.4 MB). Peak memory consumption was 234.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:35:51,306 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 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 769.83 ms. Allocated memory was 137.9 MB in the beginning and 204.5 MB in the end (delta: 66.6 MB). Free memory was 100.1 MB in the beginning and 174.5 MB in the end (delta: -74.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.65 ms. Allocated memory is still 204.5 MB. Free memory was 174.5 MB in the beginning and 170.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1165.91 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 170.1 MB in the beginning and 200.6 MB in the end (delta: -30.5 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11947.23 ms. Allocated memory was 234.4 MB in the beginning and 442.0 MB in the end (delta: 207.6 MB). Free memory was 199.2 MB in the beginning and 172.8 MB in the end (delta: 26.4 MB). Peak memory consumption was 234.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 148]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L597] int pumpRunning = 0; [L598] int systemActive = 1; [L849] int waterLevel = 1; [L850] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L582] int retValue_acc ; [L585] retValue_acc = 1 [L586] 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() [L783] int splverifierCounter ; [L784] int tmp ; [L785] int tmp___0 ; [L786] int tmp___1 ; [L787] int tmp___2 ; [L790] splverifierCounter = 0 [L792] COND TRUE 1 [L794] COND TRUE splverifierCounter < 4 [L800] tmp = __VERIFIER_nondet_int() [L802] COND TRUE \read(tmp) [L804] CALL waterRise() [L867] COND TRUE waterLevel < 2 [L868] waterLevel = waterLevel + 1 [L804] RET waterRise() [L810] tmp___0 = __VERIFIER_nondet_int() [L812] COND FALSE !(\read(tmp___0)) [L820] tmp___2 = __VERIFIER_nondet_int() [L822] COND FALSE !(\read(tmp___2)) [L826] tmp___1 = __VERIFIER_nondet_int() [L828] COND TRUE \read(tmp___1) [L830] CALL stopSystem() [L770] COND FALSE !(\read(pumpRunning)) [L777] systemActive = 0 [L830] RET stopSystem() [L837] CALL timeShift() [L604] COND FALSE !(\read(pumpRunning)) [L611] COND FALSE !(\read(systemActive)) [L619] CALL __utac_acc__Specification3_spec__1() [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L163] CALL, EXPR isMethaneLevelCritical() [L888] int retValue_acc ; [L891] retValue_acc = methaneLevelCritical [L892] return (retValue_acc); [L163] RET, EXPR isMethaneLevelCritical() [L163] tmp = isMethaneLevelCritical() [L165] COND FALSE !(\read(tmp)) [L169] CALL, EXPR getWaterLevel() [L920] int retValue_acc ; [L923] retValue_acc = waterLevel [L924] return (retValue_acc); [L169] RET, EXPR getWaterLevel() [L169] tmp___0 = getWaterLevel() [L171] COND TRUE tmp___0 == 2 [L173] CALL, EXPR isPumpRunning() [L703] int retValue_acc ; [L706] retValue_acc = pumpRunning [L707] return (retValue_acc); [L173] RET, EXPR isPumpRunning() [L173] tmp___1 = isPumpRunning() [L175] COND FALSE !(\read(tmp___1)) [L179] CALL __automaton_fail() [L148] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 495 SDtfs, 790 SDslu, 340 SDs, 0 SdLazy, 1887 SolverSat, 460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=493occurred 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, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s 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...