/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=DEEPEST --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_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:23:47,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:23:47,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:23:47,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:23:47,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:23:47,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:23:47,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:23:47,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:23:47,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:23:47,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:23:47,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:23:47,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:23:47,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:23:47,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:23:47,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:23:47,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:23:47,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:23:47,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:23:47,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:23:47,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:23:47,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:23:47,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:23:47,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:23:47,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:23:47,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:23:47,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:23:47,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:23:47,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:23:47,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:23:47,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:23:47,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:23:47,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:23:47,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:23:47,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:23:47,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:23:47,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:23:47,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:23:47,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:23:47,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:23:47,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:23:47,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:23:47,329 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 20:23:47,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:23:47,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:23:47,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:23:47,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:23:47,368 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:23:47,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:23:47,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:23:47,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:23:47,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:23:47,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:23:47,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:23:47,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:23:47,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:23:47,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:23:47,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:23:47,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:23:47,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:23:47,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:23:47,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:23:47,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:23:47,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:23:47,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:23:47,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:23:47,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:23:47,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:23:47,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:23:47,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:23:47,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:23:47,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:23:47,374 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=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:23:47,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:23:47,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:23:47,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:23:47,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:23:47,682 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:23:47,683 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-08-21 20:23:47,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47dc7cc1f/00624c6559134b5bb3a084a540e32ff2/FLAG8fe95cfa9 [2020-08-21 20:23:48,334 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:23:48,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product27.cil.c [2020-08-21 20:23:48,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47dc7cc1f/00624c6559134b5bb3a084a540e32ff2/FLAG8fe95cfa9 [2020-08-21 20:23:48,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47dc7cc1f/00624c6559134b5bb3a084a540e32ff2 [2020-08-21 20:23:48,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:23:48,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:23:48,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:23:48,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:23:48,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:23:48,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:23:48" (1/1) ... [2020-08-21 20:23:48,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:48, skipping insertion in model container [2020-08-21 20:23:48,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:23:48" (1/1) ... [2020-08-21 20:23:48,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:23:48,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:23:49,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:23:49,174 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:23:49,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:23:49,291 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:23:49,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49 WrapperNode [2020-08-21 20:23:49,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:23:49,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:23:49,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:23:49,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:23:49,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (1/1) ... [2020-08-21 20:23:49,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:23:49,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:23:49,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:23:49,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:23:49,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (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 20:23:49,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:23:49,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:23:49,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 20:23:49,487 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 20:23:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 20:23:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 20:23:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 20:23:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:23:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 20:23:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 20:23:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 20:23:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 20:23:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 20:23:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 20:23:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 20:23:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 20:23:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 20:23:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 20:23:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 20:23:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 20:23:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 20:23:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 20:23:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 20:23:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 20:23:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 20:23:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 20:23:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 20:23:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 20:23:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 20:23:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 20:23:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 20:23:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 20:23:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 20:23:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 20:23:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 20:23:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 20:23:49,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 20:23:49,493 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 20:23:49,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:23:49,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:23:49,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:23:49,494 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 20:23:49,494 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 20:23:49,494 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 20:23:49,494 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 20:23:49,494 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 20:23:49,494 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 20:23:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 20:23:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 20:23:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 20:23:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 20:23:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 20:23:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 20:23:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 20:23:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 20:23:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 20:23:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 20:23:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 20:23:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 20:23:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 20:23:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 20:23:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 20:23:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:23:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 20:23:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 20:23:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 20:23:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 20:23:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 20:23:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 20:23:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 20:23:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:23:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:23:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 20:23:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:23:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:23:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 20:23:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:23:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 20:23:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:23:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 20:23:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 20:23:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 20:23:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 20:23:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 20:23:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 20:23:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 20:23:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 20:23:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 20:23:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:23:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:23:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 20:23:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:23:50,760 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:23:50,760 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 20:23:50,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:23:50 BoogieIcfgContainer [2020-08-21 20:23:50,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:23:50,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:23:50,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:23:50,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:23:50,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:23:48" (1/3) ... [2020-08-21 20:23:50,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f83dae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:23:50, skipping insertion in model container [2020-08-21 20:23:50,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:23:49" (2/3) ... [2020-08-21 20:23:50,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f83dae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:23:50, skipping insertion in model container [2020-08-21 20:23:50,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:23:50" (3/3) ... [2020-08-21 20:23:50,782 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product27.cil.c [2020-08-21 20:23:50,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:23:50,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 20:23:50,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 20:23:50,853 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:23:50,854 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:23:50,854 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:23:50,854 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:23:50,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:23:50,855 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:23:50,855 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:23:50,855 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:23:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 20:23:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 20:23:50,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:50,901 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 20:23:50,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash -527888635, now seen corresponding path program 1 times [2020-08-21 20:23:50,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:50,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406459278] [2020-08-21 20:23:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,670 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:51,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 20:23:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 20:23:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 20:23:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:51,767 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 20:23:51,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406459278] [2020-08-21 20:23:51,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:51,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 20:23:51,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922941872] [2020-08-21 20:23:51,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 20:23:51,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:51,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 20:23:51,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 20:23:51,797 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 20:23:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:52,916 INFO L93 Difference]: Finished difference Result 273 states and 360 transitions. [2020-08-21 20:23:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:23:52,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 20:23:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:52,933 INFO L225 Difference]: With dead ends: 273 [2020-08-21 20:23:52,933 INFO L226 Difference]: Without dead ends: 148 [2020-08-21 20:23:52,938 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 20:23:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-21 20:23:53,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-08-21 20:23:53,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-21 20:23:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-21 20:23:53,028 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 52 [2020-08-21 20:23:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:53,028 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-21 20:23:53,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 20:23:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-21 20:23:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 20:23:53,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:53,032 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 20:23:53,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:23:53,033 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1019297795, now seen corresponding path program 1 times [2020-08-21 20:23:53,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:53,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418362556] [2020-08-21 20:23:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,349 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:53,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:23:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 20:23:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 20:23:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:53,395 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 20:23:53,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418362556] [2020-08-21 20:23:53,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:53,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:23:53,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270768232] [2020-08-21 20:23:53,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:23:53,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:53,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:23:53,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:23:53,399 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states. [2020-08-21 20:23:53,837 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:23:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:54,564 INFO L93 Difference]: Finished difference Result 200 states and 243 transitions. [2020-08-21 20:23:54,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:23:54,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 20:23:54,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:54,568 INFO L225 Difference]: With dead ends: 200 [2020-08-21 20:23:54,568 INFO L226 Difference]: Without dead ends: 132 [2020-08-21 20:23:54,569 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 20:23:54,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-21 20:23:54,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2020-08-21 20:23:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-21 20:23:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-08-21 20:23:54,604 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 53 [2020-08-21 20:23:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:54,605 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-08-21 20:23:54,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:23:54,605 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-08-21 20:23:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 20:23:54,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:54,608 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 20:23:54,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:23:54,608 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:54,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1975816461, now seen corresponding path program 1 times [2020-08-21 20:23:54,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:54,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574841006] [2020-08-21 20:23:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:54,952 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:54,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:55,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:55,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:55,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:55,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 20:23:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:55,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:23:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:55,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:23:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:55,093 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 20:23:55,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574841006] [2020-08-21 20:23:55,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:55,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:23:55,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065309469] [2020-08-21 20:23:55,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:23:55,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:55,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:23:55,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:23:55,101 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 8 states. [2020-08-21 20:23:55,444 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:23:55,789 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:56,074 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:56,319 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:23:57,046 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 20:23:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:23:58,582 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2020-08-21 20:23:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 20:23:58,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 20:23:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:23:58,593 INFO L225 Difference]: With dead ends: 375 [2020-08-21 20:23:58,594 INFO L226 Difference]: Without dead ends: 292 [2020-08-21 20:23:58,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 20:23:58,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-21 20:23:58,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238. [2020-08-21 20:23:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-21 20:23:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2020-08-21 20:23:58,667 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 57 [2020-08-21 20:23:58,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:23:58,668 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2020-08-21 20:23:58,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:23:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2020-08-21 20:23:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 20:23:58,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:23:58,671 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 20:23:58,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:23:58,672 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:23:58,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:23:58,672 INFO L82 PathProgramCache]: Analyzing trace with hash -872029399, now seen corresponding path program 1 times [2020-08-21 20:23:58,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:23:58,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626991264] [2020-08-21 20:23:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:23:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:58,968 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 20:23:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:23:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:59,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:23:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:59,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:23:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:59,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 20:23:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:59,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 20:23:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:59,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:23:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:59,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 20:23:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:59,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 20:23:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:59,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 20:23:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:23:59,070 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 20:23:59,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626991264] [2020-08-21 20:23:59,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:23:59,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 20:23:59,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489846977] [2020-08-21 20:23:59,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 20:23:59,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:23:59,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 20:23:59,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:23:59,073 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand 8 states. [2020-08-21 20:23:59,436 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:24:00,728 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:24:01,020 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:24:01,277 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 20:24:01,525 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 20:24:02,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:24:02,110 INFO L93 Difference]: Finished difference Result 726 states and 953 transitions. [2020-08-21 20:24:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 20:24:02,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 20:24:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:24:02,117 INFO L225 Difference]: With dead ends: 726 [2020-08-21 20:24:02,118 INFO L226 Difference]: Without dead ends: 512 [2020-08-21 20:24:02,120 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 20:24:02,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-08-21 20:24:02,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 449. [2020-08-21 20:24:02,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-21 20:24:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 555 transitions. [2020-08-21 20:24:02,232 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 555 transitions. Word has length 63 [2020-08-21 20:24:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:24:02,233 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 555 transitions. [2020-08-21 20:24:02,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 20:24:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 555 transitions. [2020-08-21 20:24:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 20:24:02,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:24:02,237 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 20:24:02,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:24:02,237 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:24:02,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:24:02,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1867456273, now seen corresponding path program 1 times [2020-08-21 20:24:02,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:24:02,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411611872] [2020-08-21 20:24:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:24:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 20:24:02,296 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 20:24:02,296 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:24:02,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:24:02,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:24:02 BoogieIcfgContainer [2020-08-21 20:24:02,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:24:02,325 INFO L168 Benchmark]: Toolchain (without parser) took 13736.71 ms. Allocated memory was 146.3 MB in the beginning and 448.3 MB in the end (delta: 302.0 MB). Free memory was 103.8 MB in the beginning and 228.9 MB in the end (delta: -125.1 MB). Peak memory consumption was 176.8 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:02,327 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 20:24:02,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.88 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 103.6 MB in the beginning and 174.4 MB in the end (delta: -70.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:02,328 INFO L168 Benchmark]: Boogie Preprocessor took 124.09 ms. Allocated memory is still 205.0 MB. Free memory was 174.4 MB in the beginning and 170.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:02,329 INFO L168 Benchmark]: RCFGBuilder took 1353.97 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.4 MB in the beginning and 196.3 MB in the end (delta: -26.0 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:02,330 INFO L168 Benchmark]: TraceAbstraction took 11550.08 ms. Allocated memory was 235.4 MB in the beginning and 448.3 MB in the end (delta: 212.9 MB). Free memory was 196.3 MB in the beginning and 228.9 MB in the end (delta: -32.6 MB). Peak memory consumption was 180.3 MB. Max. memory is 7.1 GB. [2020-08-21 20:24:02,334 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 122.7 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.88 ms. Allocated memory was 146.3 MB in the beginning and 205.0 MB in the end (delta: 58.7 MB). Free memory was 103.6 MB in the beginning and 174.4 MB in the end (delta: -70.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.09 ms. Allocated memory is still 205.0 MB. Free memory was 174.4 MB in the beginning and 170.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1353.97 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.4 MB in the beginning and 196.3 MB in the end (delta: -26.0 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11550.08 ms. Allocated memory was 235.4 MB in the beginning and 448.3 MB in the end (delta: 212.9 MB). Free memory was 196.3 MB in the beginning and 228.9 MB in the end (delta: -32.6 MB). Peak memory consumption was 180.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 346]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L558] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L755] int waterLevel = 1; [L756] int methaneLevelCritical = 0; [L844] int cleanupTimeShifts = 4; [L917] int retValue_acc ; [L918] int tmp ; [L922] FCALL select_helpers() [L923] FCALL select_features() [L924] CALL, EXPR valid_product() [L380] int retValue_acc ; [L383] retValue_acc = 1 [L384] return (retValue_acc); [L924] RET, EXPR valid_product() [L924] tmp = valid_product() [L926] COND TRUE \read(tmp) [L928] FCALL setup() [L929] CALL runTest() [L911] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L773] COND TRUE waterLevel < 2 [L774] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___2)) [L89] tmp___1 = __VERIFIER_nondet_int() [L91] COND TRUE \read(tmp___1) [L93] CALL stopSystem() [L294] COND FALSE !(\read(pumpRunning)) [L301] systemActive = 0 [L93] RET stopSystem() [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND FALSE !(\read(systemActive)) [L143] CALL __utac_acc__Specification3_spec__1() [L309] int tmp ; [L310] int tmp___0 ; [L311] int tmp___1 ; [L315] CALL, EXPR isMethaneLevelCritical() [L794] int retValue_acc ; [L797] retValue_acc = methaneLevelCritical [L798] return (retValue_acc); [L315] RET, EXPR isMethaneLevelCritical() [L315] tmp = isMethaneLevelCritical() [L317] COND FALSE !(\read(tmp)) [L321] CALL, EXPR getWaterLevel() [L826] int retValue_acc ; [L829] retValue_acc = waterLevel [L830] return (retValue_acc); [L321] RET, EXPR getWaterLevel() [L321] tmp___0 = getWaterLevel() [L323] COND TRUE tmp___0 == 2 [L325] CALL, EXPR isPumpRunning() [L227] int retValue_acc ; [L230] retValue_acc = pumpRunning [L231] return (retValue_acc); [L325] RET, EXPR isPumpRunning() [L325] tmp___1 = isPumpRunning() [L327] COND FALSE !(\read(tmp___1)) [L331] CALL __automaton_fail() [L346] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 683 SDslu, 306 SDs, 0 SdLazy, 1673 SolverSat, 407 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s 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...