/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=BIGGEST --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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:10:41,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:10:41,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:10:41,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:10:41,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:10:41,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:10:41,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:10:41,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:10:41,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:10:41,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:10:41,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:10:41,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:10:41,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:10:41,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:10:41,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:10:41,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:10:41,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:10:41,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:10:41,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:10:41,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:10:41,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:10:41,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:10:41,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:10:41,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:10:41,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:10:41,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:10:41,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:10:41,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:10:41,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:10:41,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:10:41,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:10:41,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:10:41,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:10:41,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:10:41,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:10:41,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:10:41,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:10:41,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:10:41,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:10:41,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:10:41,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:10:41,439 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 17:10:41,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:10:41,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:10:41,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:10:41,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:10:41,486 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:10:41,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:10:41,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:10:41,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:10:41,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:10:41,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:10:41,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:10:41,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:10:41,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:10:41,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:10:41,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:10:41,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:10:41,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:10:41,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:10:41,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:10:41,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:10:41,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:10:41,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:10:41,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:10:41,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:10:41,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:10:41,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:10:41,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:10:41,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:10:41,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:10:41,492 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=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:10:41,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:10:41,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:10:41,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:10:41,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:10:41,802 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:10:41,803 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2020-08-21 17:10:41,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c28227da1/3c567418e6124e7ebc86103c0a616d3f/FLAGbfac7751f [2020-08-21 17:10:42,469 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:10:42,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product44.cil.c [2020-08-21 17:10:42,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c28227da1/3c567418e6124e7ebc86103c0a616d3f/FLAGbfac7751f [2020-08-21 17:10:42,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c28227da1/3c567418e6124e7ebc86103c0a616d3f [2020-08-21 17:10:42,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:10:42,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:10:42,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:10:42,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:10:42,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:10:42,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:10:42" (1/1) ... [2020-08-21 17:10:42,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:42, skipping insertion in model container [2020-08-21 17:10:42,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:10:42" (1/1) ... [2020-08-21 17:10:42,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:10:42,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:10:43,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:10:43,264 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:10:43,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:10:43,430 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:10:43,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43 WrapperNode [2020-08-21 17:10:43,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:10:43,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:10:43,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:10:43,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:10:43,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43" (1/1) ... [2020-08-21 17:10:43,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43" (1/1) ... [2020-08-21 17:10:43,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43" (1/1) ... [2020-08-21 17:10:43,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43" (1/1) ... [2020-08-21 17:10:43,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43" (1/1) ... [2020-08-21 17:10:43,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43" (1/1) ... [2020-08-21 17:10:43,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43" (1/1) ... [2020-08-21 17:10:43,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:10:43,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:10:43,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:10:43,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:10:43,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43" (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 17:10:43,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:10:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:10:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 17:10:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 17:10:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 17:10:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 17:10:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 17:10:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:10:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:10:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 17:10:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 17:10:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 17:10:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 17:10:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 17:10:43,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 17:10:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 17:10:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 17:10:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 17:10:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 17:10:43,632 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 17:10:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 17:10:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 17:10:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 17:10:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 17:10:43,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 17:10:43,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 17:10:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 17:10:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 17:10:43,635 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 17:10:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 17:10:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:10:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 17:10:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 17:10:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 17:10:43,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 17:10:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 17:10:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 17:10:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 17:10:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 17:10:43,637 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 17:10:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:10:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:10:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 17:10:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 17:10:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 17:10:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 17:10:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 17:10:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 17:10:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 17:10:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 17:10:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 17:10:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 17:10:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 17:10:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 17:10:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 17:10:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:10:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 17:10:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 17:10:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 17:10:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 17:10:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 17:10:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 17:10:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 17:10:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 17:10:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:10:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 17:10:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 17:10:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:10:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:10:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 17:10:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:10:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:10:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:10:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:10:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 17:10:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:10:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 17:10:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 17:10:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:10:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 17:10:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 17:10:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 17:10:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 17:10:43,648 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 17:10:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 17:10:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 17:10:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 17:10:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 17:10:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 17:10:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 17:10:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 17:10:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:10:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 17:10:43,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:10:44,672 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:10:44,672 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 17:10:44,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:44 BoogieIcfgContainer [2020-08-21 17:10:44,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:10:44,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:10:44,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:10:44,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:10:44,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:10:42" (1/3) ... [2020-08-21 17:10:44,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4417ee18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:44, skipping insertion in model container [2020-08-21 17:10:44,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:10:43" (2/3) ... [2020-08-21 17:10:44,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4417ee18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:10:44, skipping insertion in model container [2020-08-21 17:10:44,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:10:44" (3/3) ... [2020-08-21 17:10:44,687 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product44.cil.c [2020-08-21 17:10:44,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:10:44,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:10:44,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:10:44,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:10:44,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:10:44,751 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:10:44,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:10:44,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:10:44,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:10:44,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:10:44,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:10:44,775 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-21 17:10:44,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 17:10:44,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:44,788 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 17:10:44,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:44,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:44,795 INFO L82 PathProgramCache]: Analyzing trace with hash -374908160, now seen corresponding path program 1 times [2020-08-21 17:10:44,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:44,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830724286] [2020-08-21 17:10:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:45,476 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:45,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:45,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:45,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 17:10:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:45,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:10:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:10:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:45,584 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 17:10:45,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830724286] [2020-08-21 17:10:45,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:45,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:10:45,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642395095] [2020-08-21 17:10:45,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:10:45,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:45,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:10:45,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:10:45,612 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2020-08-21 17:10:46,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:46,792 INFO L93 Difference]: Finished difference Result 316 states and 408 transitions. [2020-08-21 17:10:46,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:10:46,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 17:10:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:46,810 INFO L225 Difference]: With dead ends: 316 [2020-08-21 17:10:46,810 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 17:10:46,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:10:46,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 17:10:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 136. [2020-08-21 17:10:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-21 17:10:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2020-08-21 17:10:46,909 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 52 [2020-08-21 17:10:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:46,909 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2020-08-21 17:10:46,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:10:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2020-08-21 17:10:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 17:10:46,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:46,914 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 17:10:46,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:10:46,915 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:46,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:46,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1199290513, now seen corresponding path program 1 times [2020-08-21 17:10:46,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:46,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607590797] [2020-08-21 17:10:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,252 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:47,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:10:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 17:10:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 17:10:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:47,297 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 17:10:47,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607590797] [2020-08-21 17:10:47,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:47,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:10:47,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432594302] [2020-08-21 17:10:47,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:10:47,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:47,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:10:47,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:10:47,301 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 4 states. [2020-08-21 17:10:47,678 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:10:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:48,562 INFO L93 Difference]: Finished difference Result 236 states and 285 transitions. [2020-08-21 17:10:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:10:48,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 17:10:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:48,568 INFO L225 Difference]: With dead ends: 236 [2020-08-21 17:10:48,568 INFO L226 Difference]: Without dead ends: 155 [2020-08-21 17:10:48,570 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 17:10:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-21 17:10:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 127. [2020-08-21 17:10:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 17:10:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2020-08-21 17:10:48,608 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 53 [2020-08-21 17:10:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:48,609 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2020-08-21 17:10:48,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:10:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2020-08-21 17:10:48,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 17:10:48,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:48,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:10:48,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:10:48,612 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:48,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1173909231, now seen corresponding path program 1 times [2020-08-21 17:10:48,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:48,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45599877] [2020-08-21 17:10:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:48,954 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 17:10:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 17:10:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 17:10:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:49,070 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 17:10:49,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45599877] [2020-08-21 17:10:49,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:49,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:10:49,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891357551] [2020-08-21 17:10:49,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:10:49,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:49,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:10:49,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:10:49,073 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand 8 states. [2020-08-21 17:10:49,415 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:10:49,736 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:49,998 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:50,220 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:50,933 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 17:10:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:52,696 INFO L93 Difference]: Finished difference Result 442 states and 540 transitions. [2020-08-21 17:10:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 17:10:52,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 17:10:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:52,706 INFO L225 Difference]: With dead ends: 442 [2020-08-21 17:10:52,706 INFO L226 Difference]: Without dead ends: 339 [2020-08-21 17:10:52,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:10:52,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-08-21 17:10:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 262. [2020-08-21 17:10:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-21 17:10:52,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 311 transitions. [2020-08-21 17:10:52,781 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 311 transitions. Word has length 58 [2020-08-21 17:10:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:52,781 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 311 transitions. [2020-08-21 17:10:52,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:10:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 311 transitions. [2020-08-21 17:10:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 17:10:52,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:52,785 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 17:10:52,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:10:52,785 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:52,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1403187774, now seen corresponding path program 1 times [2020-08-21 17:10:52,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:52,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458641570] [2020-08-21 17:10:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,089 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 17:10:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:10:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 17:10:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:10:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 17:10:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 17:10:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 17:10:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 17:10:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 17:10:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 17:10:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:10:53,169 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 17:10:53,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458641570] [2020-08-21 17:10:53,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:10:53,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 17:10:53,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008999410] [2020-08-21 17:10:53,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 17:10:53,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:10:53,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 17:10:53,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 17:10:53,172 INFO L87 Difference]: Start difference. First operand 262 states and 311 transitions. Second operand 8 states. [2020-08-21 17:10:53,483 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:10:54,797 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:55,120 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:55,392 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 17:10:55,660 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 17:10:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:10:56,598 INFO L93 Difference]: Finished difference Result 809 states and 1045 transitions. [2020-08-21 17:10:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 17:10:56,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 17:10:56,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:10:56,607 INFO L225 Difference]: With dead ends: 809 [2020-08-21 17:10:56,607 INFO L226 Difference]: Without dead ends: 571 [2020-08-21 17:10:56,610 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 [2020-08-21 17:10:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-21 17:10:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 501. [2020-08-21 17:10:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-08-21 17:10:56,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 605 transitions. [2020-08-21 17:10:56,731 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 605 transitions. Word has length 63 [2020-08-21 17:10:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:10:56,732 INFO L479 AbstractCegarLoop]: Abstraction has 501 states and 605 transitions. [2020-08-21 17:10:56,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 17:10:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 605 transitions. [2020-08-21 17:10:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 17:10:56,737 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:10:56,737 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 17:10:56,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:10:56,738 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:10:56,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:10:56,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1134068548, now seen corresponding path program 1 times [2020-08-21 17:10:56,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:10:56,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740791482] [2020-08-21 17:10:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:10:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:10:56,825 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:10:56,825 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:10:56,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:10:56,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:10:56 BoogieIcfgContainer [2020-08-21 17:10:56,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:10:56,862 INFO L168 Benchmark]: Toolchain (without parser) took 14125.15 ms. Allocated memory was 140.5 MB in the beginning and 479.7 MB in the end (delta: 339.2 MB). Free memory was 103.1 MB in the beginning and 211.2 MB in the end (delta: -108.1 MB). Peak memory consumption was 231.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:56,864 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:10:56,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.40 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 169.3 MB in the end (delta: -66.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:56,871 INFO L168 Benchmark]: Boogie Preprocessor took 109.83 ms. Allocated memory is still 203.4 MB. Free memory was 169.3 MB in the beginning and 164.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:56,872 INFO L168 Benchmark]: RCFGBuilder took 1136.76 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 164.6 MB in the beginning and 193.2 MB in the end (delta: -28.7 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:56,873 INFO L168 Benchmark]: TraceAbstraction took 12180.70 ms. Allocated memory was 236.5 MB in the beginning and 479.7 MB in the end (delta: 243.3 MB). Free memory was 193.2 MB in the beginning and 211.2 MB in the end (delta: -17.9 MB). Peak memory consumption was 225.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:10:56,886 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.40 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 169.3 MB in the end (delta: -66.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.83 ms. Allocated memory is still 203.4 MB. Free memory was 169.3 MB in the beginning and 164.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1136.76 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 164.6 MB in the beginning and 193.2 MB in the end (delta: -28.7 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12180.70 ms. Allocated memory was 236.5 MB in the beginning and 479.7 MB in the end (delta: 243.3 MB). Free memory was 193.2 MB in the beginning and 211.2 MB in the end (delta: -17.9 MB). Peak memory consumption was 225.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 318]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L185] int waterLevel = 1; [L186] int methaneLevelCritical = 0; [L492] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L693] int pumpRunning = 0; [L694] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L305] int retValue_acc ; [L308] retValue_acc = 1 [L309] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L887] int splverifierCounter ; [L888] int tmp ; [L889] int tmp___0 ; [L890] int tmp___1 ; [L891] int tmp___2 ; [L894] splverifierCounter = 0 [L896] COND TRUE 1 [L898] COND TRUE splverifierCounter < 4 [L904] tmp = __VERIFIER_nondet_int() [L906] COND TRUE \read(tmp) [L908] CALL waterRise() [L203] COND TRUE waterLevel < 2 [L204] waterLevel = waterLevel + 1 [L908] RET waterRise() [L914] tmp___0 = __VERIFIER_nondet_int() [L916] COND FALSE !(\read(tmp___0)) [L924] tmp___2 = __VERIFIER_nondet_int() [L926] COND FALSE !(\read(tmp___2)) [L932] tmp___1 = __VERIFIER_nondet_int() [L934] COND TRUE \read(tmp___1) [L936] CALL stopSystem() [L866] COND FALSE !(\read(pumpRunning)) [L873] systemActive = 0 [L936] RET stopSystem() [L943] CALL timeShift() [L700] COND FALSE !(\read(pumpRunning)) [L707] COND FALSE !(\read(systemActive)) [L715] CALL __utac_acc__Specification3_spec__1() [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L155] CALL, EXPR isMethaneLevelCritical() [L224] int retValue_acc ; [L227] retValue_acc = methaneLevelCritical [L228] return (retValue_acc); [L155] RET, EXPR isMethaneLevelCritical() [L155] tmp = isMethaneLevelCritical() [L157] COND FALSE !(\read(tmp)) [L161] CALL, EXPR getWaterLevel() [L256] int retValue_acc ; [L259] retValue_acc = waterLevel [L260] return (retValue_acc); [L161] RET, EXPR getWaterLevel() [L161] tmp___0 = getWaterLevel() [L163] COND TRUE tmp___0 == 2 [L165] CALL, EXPR isPumpRunning() [L799] int retValue_acc ; [L802] retValue_acc = pumpRunning [L803] return (retValue_acc); [L165] RET, EXPR isPumpRunning() [L165] tmp___1 = isPumpRunning() [L167] COND FALSE !(\read(tmp___1)) [L171] CALL __automaton_fail() [L318] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 516 SDtfs, 802 SDslu, 368 SDs, 0 SdLazy, 1947 SolverSat, 489 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=501occurred 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, 210 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...