/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:21:36,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:21:36,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:21:36,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:21:36,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:21:36,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:21:36,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:21:36,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:21:36,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:21:36,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:21:36,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:21:36,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:21:36,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:21:36,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:21:36,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:21:36,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:21:36,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:21:36,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:21:36,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:21:36,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:21:36,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:21:36,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:21:36,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:21:36,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:21:36,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:21:36,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:21:36,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:21:36,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:21:36,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:21:36,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:21:36,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:21:36,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:21:36,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:21:36,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:21:36,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:21:36,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:21:36,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:21:36,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:21:36,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:21:36,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:21:36,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:21:36,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:21:36,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:21:36,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:21:36,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:21:36,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:21:36,206 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:21:36,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:21:36,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:21:36,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:21:36,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:21:36,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:21:36,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:21:36,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:21:36,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:21:36,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:21:36,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:21:36,209 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:21:36,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:21:36,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:21:36,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:21:36,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:21:36,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:21:36,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:21:36,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:21:36,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:21:36,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:21:36,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:21:36,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:21:36,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:21:36,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:21:36,212 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 -> false [2020-08-18 10:21:36,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:21:36,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:21:36,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:21:36,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:21:36,562 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:21:36,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2020-08-18 10:21:36,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b6fe6c22/a224da45aa174dfba3857a5bb234b753/FLAG18c283900 [2020-08-18 10:21:37,209 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:21:37,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product07.cil.c [2020-08-18 10:21:37,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b6fe6c22/a224da45aa174dfba3857a5bb234b753/FLAG18c283900 [2020-08-18 10:21:37,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4b6fe6c22/a224da45aa174dfba3857a5bb234b753 [2020-08-18 10:21:37,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:21:37,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:21:37,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:37,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:21:37,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:21:37,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:37" (1/1) ... [2020-08-18 10:21:37,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b134fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:37, skipping insertion in model container [2020-08-18 10:21:37,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:37" (1/1) ... [2020-08-18 10:21:37,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:21:37,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:21:38,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:38,025 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:21:38,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:38,193 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:21:38,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38 WrapperNode [2020-08-18 10:21:38,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:38,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:21:38,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:21:38,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:21:38,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38" (1/1) ... [2020-08-18 10:21:38,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38" (1/1) ... [2020-08-18 10:21:38,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38" (1/1) ... [2020-08-18 10:21:38,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38" (1/1) ... [2020-08-18 10:21:38,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38" (1/1) ... [2020-08-18 10:21:38,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38" (1/1) ... [2020-08-18 10:21:38,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38" (1/1) ... [2020-08-18 10:21:38,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:21:38,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:21:38,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:21:38,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:21:38,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38" (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 [2020-08-18 10:21:38,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:21:38,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:21:38,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:38,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:21:38,359 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:21:38,359 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:21:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:21:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:21:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:21:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:21:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:21:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:21:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:21:38,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:38,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:38,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:21:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:21:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:21:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:21:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:21:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:21:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:21:38,364 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:21:38,365 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:21:38,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:21:38,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:21:38,366 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:21:38,366 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:21:38,366 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:21:38,366 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:21:38,367 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:21:38,367 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:21:38,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:21:38,367 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:21:38,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:21:38,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:21:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:21:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:21:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:21:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:21:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:21:38,368 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:21:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:21:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:21:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:21:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:21:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:21:38,369 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:21:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:21:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:21:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:21:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:21:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:21:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:21:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:21:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:21:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:21:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:21:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:21:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:21:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:21:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:21:38,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:21:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:21:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:21:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:21:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:21:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:21:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:21:38,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:21:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:21:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:21:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:21:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:21:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:21:38,374 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:21:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:21:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:21:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:21:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:21:38,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:21:39,454 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:21:39,455 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:21:39,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:39 BoogieIcfgContainer [2020-08-18 10:21:39,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:21:39,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:21:39,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:21:39,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:21:39,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:21:37" (1/3) ... [2020-08-18 10:21:39,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b802da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:39, skipping insertion in model container [2020-08-18 10:21:39,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:38" (2/3) ... [2020-08-18 10:21:39,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b802da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:39, skipping insertion in model container [2020-08-18 10:21:39,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:39" (3/3) ... [2020-08-18 10:21:39,473 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product07.cil.c [2020-08-18 10:21:39,484 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:21:39,492 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:21:39,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:21:39,523 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:21:39,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:21:39,524 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:21:39,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:21:39,524 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:21:39,525 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:21:39,525 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:21:39,525 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:21:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-08-18 10:21:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:21:39,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:39,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:39,559 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:39,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:39,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1046284201, now seen corresponding path program 1 times [2020-08-18 10:21:39,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:39,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550134209] [2020-08-18 10:21:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,219 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:40,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550134209] [2020-08-18 10:21:40,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:40,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:21:40,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234230641] [2020-08-18 10:21:40,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:21:40,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:40,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:21:40,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:21:40,392 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 3 states. [2020-08-18 10:21:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:41,479 INFO L93 Difference]: Finished difference Result 263 states and 350 transitions. [2020-08-18 10:21:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:21:41,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 10:21:41,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:41,496 INFO L225 Difference]: With dead ends: 263 [2020-08-18 10:21:41,496 INFO L226 Difference]: Without dead ends: 143 [2020-08-18 10:21:41,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:21:41,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-08-18 10:21:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2020-08-18 10:21:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 10:21:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2020-08-18 10:21:41,614 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 52 [2020-08-18 10:21:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:41,615 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2020-08-18 10:21:41,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:21:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2020-08-18 10:21:41,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 10:21:41,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:41,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:41,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:21:41,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:41,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:41,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1021968907, now seen corresponding path program 1 times [2020-08-18 10:21:41,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:41,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876997664] [2020-08-18 10:21:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:41,976 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:41,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:42,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:42,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:42,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:42,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:21:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:42,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:21:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:42,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:42,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876997664] [2020-08-18 10:21:42,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:42,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:21:42,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181985432] [2020-08-18 10:21:42,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:21:42,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:42,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:21:42,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:21:42,032 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand 4 states. [2020-08-18 10:21:42,483 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:43,178 INFO L93 Difference]: Finished difference Result 190 states and 233 transitions. [2020-08-18 10:21:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:21:43,183 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 10:21:43,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:43,186 INFO L225 Difference]: With dead ends: 190 [2020-08-18 10:21:43,186 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 10:21:43,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:21:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 10:21:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2020-08-18 10:21:43,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-18 10:21:43,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2020-08-18 10:21:43,223 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 53 [2020-08-18 10:21:43,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:43,224 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2020-08-18 10:21:43,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:21:43,224 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2020-08-18 10:21:43,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 10:21:43,226 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:43,226 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] [2020-08-18 10:21:43,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:21:43,227 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:43,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1636314529, now seen corresponding path program 1 times [2020-08-18 10:21:43,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:43,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694458096] [2020-08-18 10:21:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:43,556 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:43,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:43,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:21:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:21:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:43,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:21:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:43,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694458096] [2020-08-18 10:21:43,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:43,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:43,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064215878] [2020-08-18 10:21:43,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:43,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:43,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:43,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:43,652 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand 8 states. [2020-08-18 10:21:44,013 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:44,337 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:44,566 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:44,802 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:45,531 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:47,011 INFO L93 Difference]: Finished difference Result 360 states and 450 transitions. [2020-08-18 10:21:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:21:47,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 10:21:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:47,022 INFO L225 Difference]: With dead ends: 360 [2020-08-18 10:21:47,022 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 10:21:47,023 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 [2020-08-18 10:21:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 10:21:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 228. [2020-08-18 10:21:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-18 10:21:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 277 transitions. [2020-08-18 10:21:47,128 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 277 transitions. Word has length 57 [2020-08-18 10:21:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:47,128 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 277 transitions. [2020-08-18 10:21:47,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 277 transitions. [2020-08-18 10:21:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 10:21:47,138 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:47,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:47,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:21:47,138 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:47,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:47,139 INFO L82 PathProgramCache]: Analyzing trace with hash -384943424, now seen corresponding path program 1 times [2020-08-18 10:21:47,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:47,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128076217] [2020-08-18 10:21:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,510 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:47,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:21:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:21:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:21:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 10:21:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:47,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128076217] [2020-08-18 10:21:47,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:47,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:47,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420417637] [2020-08-18 10:21:47,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:47,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:47,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:47,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:47,654 INFO L87 Difference]: Start difference. First operand 228 states and 277 transitions. Second operand 8 states. [2020-08-18 10:21:48,069 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:49,312 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:49,602 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:49,866 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:50,111 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:50,659 INFO L93 Difference]: Finished difference Result 696 states and 923 transitions. [2020-08-18 10:21:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 10:21:50,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 10:21:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:50,665 INFO L225 Difference]: With dead ends: 696 [2020-08-18 10:21:50,665 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 10:21:50,668 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 [2020-08-18 10:21:50,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 10:21:50,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 429. [2020-08-18 10:21:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-18 10:21:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 535 transitions. [2020-08-18 10:21:50,777 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 535 transitions. Word has length 63 [2020-08-18 10:21:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:50,778 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 535 transitions. [2020-08-18 10:21:50,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 535 transitions. [2020-08-18 10:21:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 10:21:50,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:50,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:21:50,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:21:50,782 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1334484666, now seen corresponding path program 1 times [2020-08-18 10:21:50,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:50,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963967586] [2020-08-18 10:21:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:21:50,837 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:21:50,837 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:21:50,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:21:50,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:21:50 BoogieIcfgContainer [2020-08-18 10:21:50,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:21:50,865 INFO L168 Benchmark]: Toolchain (without parser) took 13309.48 ms. Allocated memory was 142.6 MB in the beginning and 445.6 MB in the end (delta: 303.0 MB). Free memory was 104.4 MB in the beginning and 216.7 MB in the end (delta: -112.3 MB). Peak memory consumption was 190.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:50,865 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 142.6 MB. Free memory was 124.2 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:21:50,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.98 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 104.2 MB in the beginning and 171.7 MB in the end (delta: -67.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:50,867 INFO L168 Benchmark]: Boogie Preprocessor took 98.29 ms. Allocated memory is still 203.4 MB. Free memory was 171.7 MB in the beginning and 167.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:50,868 INFO L168 Benchmark]: RCFGBuilder took 1170.78 ms. Allocated memory was 203.4 MB in the beginning and 231.7 MB in the end (delta: 28.3 MB). Free memory was 167.3 MB in the beginning and 188.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:50,869 INFO L168 Benchmark]: TraceAbstraction took 11397.80 ms. Allocated memory was 231.7 MB in the beginning and 445.6 MB in the end (delta: 213.9 MB). Free memory was 188.5 MB in the beginning and 216.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 185.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:50,873 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 142.6 MB. Free memory was 124.2 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.98 ms. Allocated memory was 142.6 MB in the beginning and 203.4 MB in the end (delta: 60.8 MB). Free memory was 104.2 MB in the beginning and 171.7 MB in the end (delta: -67.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.29 ms. Allocated memory is still 203.4 MB. Free memory was 171.7 MB in the beginning and 167.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1170.78 ms. Allocated memory was 203.4 MB in the beginning and 231.7 MB in the end (delta: 28.3 MB). Free memory was 167.3 MB in the beginning and 188.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 77.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11397.80 ms. Allocated memory was 231.7 MB in the beginning and 445.6 MB in the end (delta: 213.9 MB). Free memory was 188.5 MB in the beginning and 216.7 MB in the end (delta: -28.2 MB). Peak memory consumption was 185.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L87] int cleanupTimeShifts = 4; [L357] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L596] int pumpRunning = 0; [L597] int systemActive = 1; [L811] int waterLevel = 1; [L812] int methaneLevelCritical = 0; [L165] int retValue_acc ; [L166] int tmp ; [L170] FCALL select_helpers() [L171] FCALL select_features() [L172] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L172] RET, EXPR valid_product() [L172] tmp = valid_product() [L174] COND TRUE \read(tmp) [L176] FCALL setup() [L177] CALL runTest() [L159] CALL test() [L745] int splverifierCounter ; [L746] int tmp ; [L747] int tmp___0 ; [L748] int tmp___1 ; [L749] int tmp___2 ; [L752] splverifierCounter = 0 [L754] COND TRUE 1 [L756] COND TRUE splverifierCounter < 4 [L762] tmp = __VERIFIER_nondet_int() [L764] COND TRUE \read(tmp) [L766] CALL waterRise() [L829] COND TRUE waterLevel < 2 [L830] waterLevel = waterLevel + 1 [L766] RET waterRise() [L772] tmp___0 = __VERIFIER_nondet_int() [L774] COND FALSE !(\read(tmp___0)) [L782] tmp___2 = __VERIFIER_nondet_int() [L784] COND FALSE !(\read(tmp___2)) [L788] tmp___1 = __VERIFIER_nondet_int() [L790] COND TRUE \read(tmp___1) [L792] CALL stopSystem() [L732] COND FALSE !(\read(pumpRunning)) [L739] systemActive = 0 [L792] RET stopSystem() [L799] CALL timeShift() [L603] COND FALSE !(\read(pumpRunning)) [L610] COND FALSE !(\read(systemActive)) [L618] CALL __utac_acc__Specification3_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L560] int tmp___1 ; [L564] CALL, EXPR isMethaneLevelCritical() [L850] int retValue_acc ; [L853] retValue_acc = methaneLevelCritical [L854] return (retValue_acc); [L564] RET, EXPR isMethaneLevelCritical() [L564] tmp = isMethaneLevelCritical() [L566] COND FALSE !(\read(tmp)) [L570] CALL, EXPR getWaterLevel() [L882] int retValue_acc ; [L885] retValue_acc = waterLevel [L886] return (retValue_acc); [L570] RET, EXPR getWaterLevel() [L570] tmp___0 = getWaterLevel() [L572] COND TRUE tmp___0 == 2 [L574] CALL, EXPR isPumpRunning() [L684] int retValue_acc ; [L687] retValue_acc = pumpRunning [L688] return (retValue_acc); [L574] RET, EXPR isPumpRunning() [L574] tmp___1 = isPumpRunning() [L576] COND FALSE !(\read(tmp___1)) [L580] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 213 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 417 SDtfs, 636 SDslu, 312 SDs, 0 SdLazy, 1610 SolverSat, 407 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s 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=429occurred 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...