/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:41:17,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:41:17,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:41:17,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:41:17,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:41:17,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:41:17,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:41:17,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:41:17,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:41:17,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:41:17,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:41:17,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:41:17,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:41:17,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:41:17,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:41:17,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:41:17,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:41:17,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:41:17,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:41:17,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:41:17,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:41:17,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:41:17,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:41:17,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:41:17,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:41:17,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:41:17,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:41:17,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:41:17,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:41:17,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:41:17,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:41:17,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:41:17,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:41:17,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:41:17,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:41:17,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:41:17,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:41:17,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:41:17,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:41:17,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:41:17,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:41:17,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 10:41:17,658 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:41:17,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:41:17,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:41:17,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:41:17,661 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:41:17,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:41:17,661 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:41:17,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:41:17,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:41:17,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:41:17,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:41:17,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:41:17,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:41:17,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:41:17,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:41:17,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:41:17,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:41:17,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:41:17,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:41:17,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:41:17,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:41:17,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:41:17,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:41:17,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:41:17,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:41:17,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:41:17,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:17,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:41:17,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:41:17,667 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 10:41:17,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:41:17,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:41:17,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:41:17,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:41:17,948 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:41:17,949 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-07-20 10:41:18,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a3adf71/2fbb3bc0124b4147aa816cc1e534f537/FLAG142434cad [2020-07-20 10:41:18,528 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:41:18,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product34.cil.c [2020-07-20 10:41:18,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a3adf71/2fbb3bc0124b4147aa816cc1e534f537/FLAG142434cad [2020-07-20 10:41:18,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19a3adf71/2fbb3bc0124b4147aa816cc1e534f537 [2020-07-20 10:41:18,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:41:18,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:41:18,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:41:18,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:41:18,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:41:18,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:41:18" (1/1) ... [2020-07-20 10:41:18,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769d466a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:18, skipping insertion in model container [2020-07-20 10:41:18,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:41:18" (1/1) ... [2020-07-20 10:41:18,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:41:18,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:41:19,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:41:19,413 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:41:19,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:41:19,524 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:41:19,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19 WrapperNode [2020-07-20 10:41:19,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:41:19,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:41:19,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:41:19,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:41:19,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... [2020-07-20 10:41:19,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:41:19,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:41:19,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:41:19,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:41:19,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 10:41:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:41:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:41:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 10:41:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 10:41:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 10:41:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 10:41:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 10:41:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:41:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 10:41:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 10:41:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 10:41:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 10:41:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 10:41:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 10:41:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 10:41:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 10:41:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-07-20 10:41:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-07-20 10:41:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 10:41:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 10:41:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 10:41:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 10:41:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 10:41:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 10:41:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 10:41:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 10:41:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 10:41:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 10:41:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 10:41:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 10:41:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 10:41:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 10:41:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 10:41:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 10:41:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 10:41:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 10:41:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 10:41:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 10:41:19,700 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 10:41:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:41:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:41:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 10:41:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 10:41:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 10:41:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 10:41:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 10:41:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 10:41:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 10:41:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 10:41:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-07-20 10:41:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 10:41:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 10:41:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 10:41:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 10:41:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 10:41:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:41:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 10:41:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 10:41:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 10:41:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 10:41:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 10:41:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:41:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 10:41:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 10:41:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-07-20 10:41:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 10:41:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 10:41:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 10:41:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 10:41:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 10:41:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 10:41:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 10:41:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:41:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 10:41:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 10:41:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:41:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 10:41:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 10:41:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:41:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 10:41:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 10:41:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 10:41:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 10:41:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 10:41:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 10:41:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 10:41:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 10:41:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 10:41:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 10:41:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:41:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 10:41:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:41:20,866 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:41:20,866 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 10:41:20,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:41:20 BoogieIcfgContainer [2020-07-20 10:41:20,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:41:20,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:41:20,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:41:20,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:41:20,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:41:18" (1/3) ... [2020-07-20 10:41:20,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4bff74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:41:20, skipping insertion in model container [2020-07-20 10:41:20,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:19" (2/3) ... [2020-07-20 10:41:20,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4bff74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:41:20, skipping insertion in model container [2020-07-20 10:41:20,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:41:20" (3/3) ... [2020-07-20 10:41:20,880 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2020-07-20 10:41:20,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:41:20,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:41:20,912 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:41:20,937 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:41:20,938 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:41:20,938 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:41:20,938 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:41:20,939 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:41:20,939 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:41:20,939 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:41:20,939 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:41:20,962 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-07-20 10:41:20,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 10:41:20,972 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:20,973 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] [2020-07-20 10:41:20,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1720198034, now seen corresponding path program 1 times [2020-07-20 10:41:20,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:20,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383928098] [2020-07-20 10:41:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:21,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:41:21,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:21,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:21,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:21,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383928098] [2020-07-20 10:41:21,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:21,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:41:21,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672652360] [2020-07-20 10:41:21,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:41:21,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:21,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:41:21,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:41:21,299 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 2 states. [2020-07-20 10:41:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:21,340 INFO L93 Difference]: Finished difference Result 224 states and 279 transitions. [2020-07-20 10:41:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:41:21,342 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2020-07-20 10:41:21,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:21,355 INFO L225 Difference]: With dead ends: 224 [2020-07-20 10:41:21,355 INFO L226 Difference]: Without dead ends: 114 [2020-07-20 10:41:21,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:41:21,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-20 10:41:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-07-20 10:41:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-20 10:41:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-07-20 10:41:21,414 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 51 [2020-07-20 10:41:21,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:21,414 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-07-20 10:41:21,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:41:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-07-20 10:41:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 10:41:21,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:21,419 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] [2020-07-20 10:41:21,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:21,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 220132220, now seen corresponding path program 1 times [2020-07-20 10:41:21,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:21,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289907869] [2020-07-20 10:41:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:21,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:41:21,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:21,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:21,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289907869] [2020-07-20 10:41:21,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:21,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:21,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118221162] [2020-07-20 10:41:21,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:21,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:21,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:21,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:21,904 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 3 states. [2020-07-20 10:41:21,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:21,922 INFO L93 Difference]: Finished difference Result 169 states and 197 transitions. [2020-07-20 10:41:21,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:21,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 10:41:21,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:21,925 INFO L225 Difference]: With dead ends: 169 [2020-07-20 10:41:21,925 INFO L226 Difference]: Without dead ends: 105 [2020-07-20 10:41:21,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:21,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-20 10:41:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-20 10:41:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-20 10:41:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-07-20 10:41:21,939 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 52 [2020-07-20 10:41:21,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:21,940 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-07-20 10:41:21,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:21,940 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-07-20 10:41:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 10:41:21,942 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:21,942 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] [2020-07-20 10:41:22,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:22,156 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:22,156 INFO L82 PathProgramCache]: Analyzing trace with hash 889380391, now seen corresponding path program 1 times [2020-07-20 10:41:22,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:22,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792642432] [2020-07-20 10:41:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:22,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 10:41:22,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:22,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:22,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792642432] [2020-07-20 10:41:22,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:22,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:22,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942995470] [2020-07-20 10:41:22,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:22,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:22,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:22,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:22,374 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 3 states. [2020-07-20 10:41:22,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:22,390 INFO L93 Difference]: Finished difference Result 182 states and 215 transitions. [2020-07-20 10:41:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:22,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-07-20 10:41:22,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:22,392 INFO L225 Difference]: With dead ends: 182 [2020-07-20 10:41:22,392 INFO L226 Difference]: Without dead ends: 105 [2020-07-20 10:41:22,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-20 10:41:22,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-20 10:41:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-20 10:41:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-07-20 10:41:22,405 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 57 [2020-07-20 10:41:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:22,406 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-07-20 10:41:22,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-07-20 10:41:22,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 10:41:22,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:22,409 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] [2020-07-20 10:41:22,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:22,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:22,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1390934310, now seen corresponding path program 1 times [2020-07-20 10:41:22,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:22,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949596547] [2020-07-20 10:41:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:22,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 10:41:22,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:22,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:22,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949596547] [2020-07-20 10:41:22,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:22,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:22,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638803458] [2020-07-20 10:41:22,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:22,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:22,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:22,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:22,846 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 3 states. [2020-07-20 10:41:22,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:22,911 INFO L93 Difference]: Finished difference Result 182 states and 216 transitions. [2020-07-20 10:41:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:22,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-07-20 10:41:22,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:22,919 INFO L225 Difference]: With dead ends: 182 [2020-07-20 10:41:22,919 INFO L226 Difference]: Without dead ends: 179 [2020-07-20 10:41:22,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-20 10:41:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-07-20 10:41:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-07-20 10:41:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 213 transitions. [2020-07-20 10:41:22,969 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 213 transitions. Word has length 65 [2020-07-20 10:41:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:22,971 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 213 transitions. [2020-07-20 10:41:22,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 213 transitions. [2020-07-20 10:41:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-07-20 10:41:22,979 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:22,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:23,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:23,193 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:23,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:23,193 INFO L82 PathProgramCache]: Analyzing trace with hash -608468927, now seen corresponding path program 1 times [2020-07-20 10:41:23,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:23,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811350832] [2020-07-20 10:41:23,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:23,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 10:41:23,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-20 10:41:23,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:23,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811350832] [2020-07-20 10:41:23,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:23,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 10:41:23,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467029956] [2020-07-20 10:41:23,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 10:41:23,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:23,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 10:41:23,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:41:23,474 INFO L87 Difference]: Start difference. First operand 179 states and 213 transitions. Second operand 7 states. [2020-07-20 10:41:24,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:24,116 INFO L93 Difference]: Finished difference Result 428 states and 548 transitions. [2020-07-20 10:41:24,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 10:41:24,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-07-20 10:41:24,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:24,121 INFO L225 Difference]: With dead ends: 428 [2020-07-20 10:41:24,121 INFO L226 Difference]: Without dead ends: 277 [2020-07-20 10:41:24,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-07-20 10:41:24,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-20 10:41:24,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 246. [2020-07-20 10:41:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-07-20 10:41:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 299 transitions. [2020-07-20 10:41:24,153 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 299 transitions. Word has length 104 [2020-07-20 10:41:24,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:24,154 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 299 transitions. [2020-07-20 10:41:24,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 10:41:24,154 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 299 transitions. [2020-07-20 10:41:24,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-20 10:41:24,156 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:24,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:24,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:24,370 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:24,371 INFO L82 PathProgramCache]: Analyzing trace with hash 575904185, now seen corresponding path program 1 times [2020-07-20 10:41:24,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:24,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375209589] [2020-07-20 10:41:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:24,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 10:41:24,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:24,589 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 10:41:24,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:24,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375209589] [2020-07-20 10:41:24,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:24,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:41:24,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309330709] [2020-07-20 10:41:24,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:41:24,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:24,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:41:24,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:41:24,592 INFO L87 Difference]: Start difference. First operand 246 states and 299 transitions. Second operand 5 states. [2020-07-20 10:41:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:24,619 INFO L93 Difference]: Finished difference Result 478 states and 605 transitions. [2020-07-20 10:41:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:41:24,620 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-07-20 10:41:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:24,623 INFO L225 Difference]: With dead ends: 478 [2020-07-20 10:41:24,623 INFO L226 Difference]: Without dead ends: 260 [2020-07-20 10:41:24,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:41:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-07-20 10:41:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2020-07-20 10:41:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-07-20 10:41:24,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 307 transitions. [2020-07-20 10:41:24,647 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 307 transitions. Word has length 123 [2020-07-20 10:41:24,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:24,648 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 307 transitions. [2020-07-20 10:41:24,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:41:24,648 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 307 transitions. [2020-07-20 10:41:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-20 10:41:24,650 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:24,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:24,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:24,862 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:24,863 INFO L82 PathProgramCache]: Analyzing trace with hash 499003387, now seen corresponding path program 1 times [2020-07-20 10:41:24,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:24,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424764063] [2020-07-20 10:41:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:25,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 10:41:25,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-20 10:41:25,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:41:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-20 10:41:25,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424764063] [2020-07-20 10:41:25,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 10:41:25,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2020-07-20 10:41:25,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422178884] [2020-07-20 10:41:25,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:25,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:25,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:25,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:41:25,287 INFO L87 Difference]: Start difference. First operand 254 states and 307 transitions. Second operand 6 states. [2020-07-20 10:41:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:25,508 INFO L93 Difference]: Finished difference Result 669 states and 845 transitions. [2020-07-20 10:41:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 10:41:25,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-07-20 10:41:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:25,518 INFO L225 Difference]: With dead ends: 669 [2020-07-20 10:41:25,518 INFO L226 Difference]: Without dead ends: 443 [2020-07-20 10:41:25,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-20 10:41:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-07-20 10:41:25,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 375. [2020-07-20 10:41:25,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-07-20 10:41:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 451 transitions. [2020-07-20 10:41:25,582 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 451 transitions. Word has length 123 [2020-07-20 10:41:25,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:25,584 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 451 transitions. [2020-07-20 10:41:25,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:25,584 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 451 transitions. [2020-07-20 10:41:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-20 10:41:25,587 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:25,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:25,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:25,806 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:25,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:25,807 INFO L82 PathProgramCache]: Analyzing trace with hash 770357983, now seen corresponding path program 1 times [2020-07-20 10:41:25,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:25,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765160917] [2020-07-20 10:41:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:26,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:41:26,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 10:41:26,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:26,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765160917] [2020-07-20 10:41:26,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:26,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:41:26,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082894880] [2020-07-20 10:41:26,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:26,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:26,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:26,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:41:26,068 INFO L87 Difference]: Start difference. First operand 375 states and 451 transitions. Second operand 6 states. [2020-07-20 10:41:26,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:26,116 INFO L93 Difference]: Finished difference Result 737 states and 906 transitions. [2020-07-20 10:41:26,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:41:26,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-07-20 10:41:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:26,120 INFO L225 Difference]: With dead ends: 737 [2020-07-20 10:41:26,120 INFO L226 Difference]: Without dead ends: 390 [2020-07-20 10:41:26,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:41:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-07-20 10:41:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2020-07-20 10:41:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-07-20 10:41:26,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 466 transitions. [2020-07-20 10:41:26,147 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 466 transitions. Word has length 127 [2020-07-20 10:41:26,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:26,148 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 466 transitions. [2020-07-20 10:41:26,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:26,148 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 466 transitions. [2020-07-20 10:41:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-20 10:41:26,151 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:26,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:26,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:26,366 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:26,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1956073980, now seen corresponding path program 1 times [2020-07-20 10:41:26,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:26,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171887778] [2020-07-20 10:41:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:26,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 10:41:26,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:41:26,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:26,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171887778] [2020-07-20 10:41:26,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:26,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:41:26,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201559538] [2020-07-20 10:41:26,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:26,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:26,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:26,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:41:26,603 INFO L87 Difference]: Start difference. First operand 390 states and 466 transitions. Second operand 6 states. [2020-07-20 10:41:27,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:27,382 INFO L93 Difference]: Finished difference Result 1246 states and 1664 transitions. [2020-07-20 10:41:27,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:41:27,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2020-07-20 10:41:27,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:27,389 INFO L225 Difference]: With dead ends: 1246 [2020-07-20 10:41:27,389 INFO L226 Difference]: Without dead ends: 884 [2020-07-20 10:41:27,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:41:27,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-07-20 10:41:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 852. [2020-07-20 10:41:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-07-20 10:41:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1074 transitions. [2020-07-20 10:41:27,446 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1074 transitions. Word has length 127 [2020-07-20 10:41:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:27,446 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1074 transitions. [2020-07-20 10:41:27,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1074 transitions. [2020-07-20 10:41:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-20 10:41:27,449 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:27,450 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:27,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:27,665 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:27,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1128183326, now seen corresponding path program 1 times [2020-07-20 10:41:27,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:27,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294724847] [2020-07-20 10:41:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:41:27,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:41:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:41:27,980 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:41:28,377 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:41:28,377 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:41:28,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:28,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:41:28 BoogieIcfgContainer [2020-07-20 10:41:28,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:41:28,867 INFO L168 Benchmark]: Toolchain (without parser) took 10016.81 ms. Allocated memory was 139.5 MB in the beginning and 332.9 MB in the end (delta: 193.5 MB). Free memory was 103.3 MB in the beginning and 269.7 MB in the end (delta: -166.4 MB). Peak memory consumption was 177.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,874 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.44 ms. Allocated memory was 139.5 MB in the beginning and 206.0 MB in the end (delta: 66.6 MB). Free memory was 102.9 MB in the beginning and 175.6 MB in the end (delta: -72.7 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,881 INFO L168 Benchmark]: Boogie Preprocessor took 100.94 ms. Allocated memory is still 206.0 MB. Free memory was 175.6 MB in the beginning and 171.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,881 INFO L168 Benchmark]: RCFGBuilder took 1244.56 ms. Allocated memory was 206.0 MB in the beginning and 235.4 MB in the end (delta: 29.4 MB). Free memory was 171.6 MB in the beginning and 198.0 MB in the end (delta: -26.5 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,882 INFO L168 Benchmark]: TraceAbstraction took 7991.53 ms. Allocated memory was 235.4 MB in the beginning and 332.9 MB in the end (delta: 97.5 MB). Free memory was 196.6 MB in the beginning and 269.7 MB in the end (delta: -73.1 MB). Peak memory consumption was 174.5 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:28,892 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.44 ms. Allocated memory was 139.5 MB in the beginning and 206.0 MB in the end (delta: 66.6 MB). Free memory was 102.9 MB in the beginning and 175.6 MB in the end (delta: -72.7 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.94 ms. Allocated memory is still 206.0 MB. Free memory was 175.6 MB in the beginning and 171.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1244.56 ms. Allocated memory was 206.0 MB in the beginning and 235.4 MB in the end (delta: 29.4 MB). Free memory was 171.6 MB in the beginning and 198.0 MB in the end (delta: -26.5 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7991.53 ms. Allocated memory was 235.4 MB in the beginning and 332.9 MB in the end (delta: 97.5 MB). Free memory was 196.6 MB in the beginning and 269.7 MB in the end (delta: -73.1 MB). Peak memory consumption was 174.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 249]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L255] int methAndRunningLastTime ; [L498] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L765] int pumpRunning = 0; [L766] int systemActive = 1; VAL [\old(cleanupTimeShifts)=89, \old(head)=46, \old(head)=31, \old(methAndRunningLastTime)=83, \old(methaneLevelCritical)=76, \old(pumpRunning)=39, \old(systemActive)=37, \old(waterLevel)=71, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] FCALL select_helpers() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L129] FCALL select_features() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] CALL, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L320] int retValue_acc ; [L323] retValue_acc = 1 [L324] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L130] RET, EXPR valid_product() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L134] FCALL setup() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L135] CALL runTest() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L113] CALL __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L260] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L113] RET __utac_acc__Specification2_spec__1() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L114] CALL test() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L697] int splverifierCounter ; [L698] int tmp ; [L699] int tmp___0 ; [L700] int tmp___1 ; [L701] int tmp___2 ; [L704] splverifierCounter = 0 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L706] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L708] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L714] tmp = __VERIFIER_nondet_int() [L716] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L718] CALL waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L169] COND TRUE waterLevel < 2 [L170] waterLevel = waterLevel + 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L718] RET waterRise() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L728] CALL changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L181] COND FALSE !(\read(methaneLevelCritical)) [L184] methaneLevelCritical = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L728] RET changeMethaneLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=-1, tmp___2=0, waterLevel=2] [L751] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L772] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L779] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L781] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L801] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L804] COND TRUE ! pumpRunning VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L806] CALL, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L898] int retValue_acc ; [L899] int tmp ; [L900] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L904] CALL, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L231] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L234] COND FALSE !(waterLevel < 2) [L238] retValue_acc = 0 [L239] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L904] RET, EXPR isHighWaterSensorDry() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L904] tmp = isHighWaterSensorDry() [L906] COND FALSE !(\read(tmp)) [L909] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L911] retValue_acc = tmp___0 [L912] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L806] RET, EXPR isHighWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L806] tmp = isHighWaterLevel() [L808] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L810] CALL activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L829] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L810] RET activatePump() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L781] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L787] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L265] int tmp ; [L266] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L270] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L270] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L274] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L274] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L277] COND FALSE !(\read(methAndRunningLastTime)) [L282] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L787] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L751] RET timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=-1, tmp___2=0, waterLevel=2] [L706] COND TRUE 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=-1, tmp___2=0, waterLevel=2] [L708] COND TRUE splverifierCounter < 4 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=-1, tmp___2=0, waterLevel=2] [L714] tmp = __VERIFIER_nondet_int() [L716] COND FALSE !(\read(tmp)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=-1, tmp___2=0, waterLevel=2] [L724] tmp___0 = __VERIFIER_nondet_int() [L726] COND FALSE !(\read(tmp___0)) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L734] tmp___2 = __VERIFIER_nondet_int() [L736] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND TRUE \read(tmp___1) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=-1, tmp___2=0, waterLevel=2] [L751] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L772] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L774] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L157] COND TRUE waterLevel > 0 [L158] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L774] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L779] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L781] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L801] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L804] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L819] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L781] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L787] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L265] int tmp ; [L266] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L270] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L270] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L270] tmp = isMethaneLevelCritical() [L272] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L274] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L853] int retValue_acc ; [L856] retValue_acc = pumpRunning [L857] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L274] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L274] tmp___0 = isPumpRunning() [L276] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L277] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L279] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L249] __VERIFIER_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.6s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1160 SDtfs, 611 SDslu, 1797 SDs, 0 SdLazy, 876 SolverSat, 221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 958 GetRequests, 924 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=852occurred in iteration=9, 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, 9 MinimizatonAttempts, 137 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 960 NumberOfCodeBlocks, 960 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 942 ConstructedInterpolants, 0 QuantifiedInterpolants, 177604 SizeOfPredicates, 23 NumberOfNonLiveVariables, 7036 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 193/195 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...