/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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:41:25,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:41:25,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:41:25,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:41:25,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:41:25,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:41:25,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:41:25,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:41:25,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:41:25,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:41:25,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:41:25,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:41:25,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:41:25,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:41:25,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:41:25,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:41:25,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:41:25,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:41:25,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:41:25,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:41:25,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:41:25,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:41:25,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:41:25,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:41:25,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:41:25,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:41:25,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:41:25,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:41:25,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:41:25,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:41:25,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:41:25,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:41:25,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:41:25,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:41:25,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:41:25,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:41:25,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:41:25,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:41:25,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:41:25,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:41:25,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:41:25,565 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 10:41:25,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:41:25,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:41:25,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:41:25,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:41:25,580 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:41:25,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:41:25,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:41:25,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:41:25,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:41:25,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:41:25,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:41:25,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:41:25,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:41:25,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:41:25,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:41:25,583 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:41:25,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:41:25,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:41:25,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:41:25,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:41:25,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:41:25,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:41:25,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:41:25,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:41:25,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:41:25,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:41:25,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:25,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:41:25,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:41:25,586 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 10:41:25,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:41:25,864 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:41:25,867 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:41:25,869 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:41:25,869 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:41:25,870 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2020-07-20 10:41:25,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a502c6c/1967034242a34d6ebc77d1de22b01d47/FLAGd4ebd8d5c [2020-07-20 10:41:26,448 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:41:26,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product44.cil.c [2020-07-20 10:41:26,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a502c6c/1967034242a34d6ebc77d1de22b01d47/FLAGd4ebd8d5c [2020-07-20 10:41:26,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a502c6c/1967034242a34d6ebc77d1de22b01d47 [2020-07-20 10:41:26,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:41:26,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:41:26,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:41:26,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:41:26,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:41:26,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:41:26" (1/1) ... [2020-07-20 10:41:26,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58818f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:26, skipping insertion in model container [2020-07-20 10:41:26,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:41:26" (1/1) ... [2020-07-20 10:41:26,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:41:26,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:41:27,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:41:27,226 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:41:27,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:41:27,391 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:41:27,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27 WrapperNode [2020-07-20 10:41:27,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:41:27,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:41:27,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:41:27,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:41:27,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27" (1/1) ... [2020-07-20 10:41:27,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27" (1/1) ... [2020-07-20 10:41:27,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27" (1/1) ... [2020-07-20 10:41:27,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27" (1/1) ... [2020-07-20 10:41:27,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27" (1/1) ... [2020-07-20 10:41:27,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27" (1/1) ... [2020-07-20 10:41:27,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27" (1/1) ... [2020-07-20 10:41:27,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:41:27,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:41:27,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:41:27,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:41:27,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27" (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 10:41:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:41:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:41:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 10:41:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 10:41:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 10:41:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 10:41:27,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 10:41:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 10:41:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-20 10:41:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 10:41:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 10:41:27,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 10:41:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 10:41:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 10:41:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 10:41:27,546 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 10:41:27,546 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 10:41:27,546 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 10:41:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 10:41:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 10:41:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 10:41:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 10:41:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 10:41:27,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 10:41:27,548 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 10:41:27,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:41:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-07-20 10:41:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-07-20 10:41:27,549 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 10:41:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 10:41:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 10:41:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 10:41:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 10:41:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 10:41:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 10:41:27,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 10:41:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 10:41:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 10:41:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 10:41:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 10:41:27,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 10:41:27,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 10:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 10:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 10:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 10:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 10:41:27,552 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 10:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 10:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 10:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 10:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 10:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 10:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 10:41:27,553 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 10:41:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 10:41:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 10:41:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 10:41:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 10:41:27,554 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-07-20 10:41:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 10:41:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 10:41:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 10:41:27,555 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-20 10:41:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 10:41:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:41:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 10:41:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 10:41:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 10:41:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 10:41:27,556 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 10:41:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 10:41:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-07-20 10:41:27,557 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 10:41:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:41:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 10:41:27,558 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 10:41:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 10:41:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 10:41:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 10:41:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 10:41:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 10:41:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:41:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 10:41:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 10:41:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:41:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 10:41:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 10:41:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:41:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 10:41:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 10:41:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 10:41:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:41:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 10:41:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:41:28,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:41:28,520 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 10:41:28,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:41:28 BoogieIcfgContainer [2020-07-20 10:41:28,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:41:28,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:41:28,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:41:28,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:41:28,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:41:26" (1/3) ... [2020-07-20 10:41:28,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504095f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:41:28, skipping insertion in model container [2020-07-20 10:41:28,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:41:27" (2/3) ... [2020-07-20 10:41:28,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504095f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:41:28, skipping insertion in model container [2020-07-20 10:41:28,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:41:28" (3/3) ... [2020-07-20 10:41:28,534 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2020-07-20 10:41:28,544 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:41:28,551 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:41:28,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:41:28,589 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:41:28,589 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:41:28,589 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:41:28,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:41:28,590 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:41:28,590 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:41:28,590 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:41:28,590 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:41:28,612 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states. [2020-07-20 10:41:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 10:41:28,622 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:28,623 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 10:41:28,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:28,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:28,629 INFO L82 PathProgramCache]: Analyzing trace with hash 925001116, now seen corresponding path program 1 times [2020-07-20 10:41:28,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:28,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43561058] [2020-07-20 10:41:28,639 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 10:41:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:28,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:41:28,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:28,925 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 10:41:28,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:28,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43561058] [2020-07-20 10:41:28,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:28,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:41:28,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456430492] [2020-07-20 10:41:28,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:41:28,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:28,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:41:28,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:41:28,951 INFO L87 Difference]: Start difference. First operand 178 states. Second operand 2 states. [2020-07-20 10:41:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:28,991 INFO L93 Difference]: Finished difference Result 266 states and 327 transitions. [2020-07-20 10:41:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:41:28,993 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51 [2020-07-20 10:41:28,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:29,006 INFO L225 Difference]: With dead ends: 266 [2020-07-20 10:41:29,006 INFO L226 Difference]: Without dead ends: 135 [2020-07-20 10:41:29,010 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 10:41:29,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-07-20 10:41:29,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-07-20 10:41:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-07-20 10:41:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2020-07-20 10:41:29,083 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 51 [2020-07-20 10:41:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:29,084 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2020-07-20 10:41:29,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:41:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2020-07-20 10:41:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 10:41:29,089 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:29,090 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 10:41:29,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:29,304 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash -214077655, now seen corresponding path program 1 times [2020-07-20 10:41:29,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:29,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246980244] [2020-07-20 10:41:29,307 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 10:41:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:29,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:41:29,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:29,578 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 10:41:29,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:29,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246980244] [2020-07-20 10:41:29,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:29,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:29,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831973355] [2020-07-20 10:41:29,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:29,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:29,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:29,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:29,582 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand 3 states. [2020-07-20 10:41:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:29,603 INFO L93 Difference]: Finished difference Result 202 states and 235 transitions. [2020-07-20 10:41:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:29,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 10:41:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:29,606 INFO L225 Difference]: With dead ends: 202 [2020-07-20 10:41:29,606 INFO L226 Difference]: Without dead ends: 126 [2020-07-20 10:41:29,608 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 10:41:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-07-20 10:41:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-07-20 10:41:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-20 10:41:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2020-07-20 10:41:29,621 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 52 [2020-07-20 10:41:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:29,622 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2020-07-20 10:41:29,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:29,622 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2020-07-20 10:41:29,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 10:41:29,624 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:29,625 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 10:41:29,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:29,840 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:29,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:29,840 INFO L82 PathProgramCache]: Analyzing trace with hash 784654360, now seen corresponding path program 1 times [2020-07-20 10:41:29,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:29,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434821866] [2020-07-20 10:41:29,842 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 10:41:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:30,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 10:41:30,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:30,049 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 10:41:30,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:30,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434821866] [2020-07-20 10:41:30,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:30,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:30,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317848354] [2020-07-20 10:41:30,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:30,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:30,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:30,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:30,052 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand 3 states. [2020-07-20 10:41:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:30,082 INFO L93 Difference]: Finished difference Result 318 states and 378 transitions. [2020-07-20 10:41:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:30,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-07-20 10:41:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:30,087 INFO L225 Difference]: With dead ends: 318 [2020-07-20 10:41:30,087 INFO L226 Difference]: Without dead ends: 220 [2020-07-20 10:41:30,088 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 10:41:30,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-20 10:41:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 208. [2020-07-20 10:41:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-07-20 10:41:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 245 transitions. [2020-07-20 10:41:30,135 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 245 transitions. Word has length 57 [2020-07-20 10:41:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:30,136 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 245 transitions. [2020-07-20 10:41:30,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 245 transitions. [2020-07-20 10:41:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-20 10:41:30,140 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:30,140 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] [2020-07-20 10:41:30,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:30,355 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:30,356 INFO L82 PathProgramCache]: Analyzing trace with hash 402514829, now seen corresponding path program 1 times [2020-07-20 10:41:30,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:30,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79644864] [2020-07-20 10:41:30,358 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 10:41:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:30,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 10:41:30,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:30,617 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 10:41:30,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:30,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79644864] [2020-07-20 10:41:30,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:30,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:30,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794890685] [2020-07-20 10:41:30,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:30,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:30,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:30,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:30,620 INFO L87 Difference]: Start difference. First operand 208 states and 245 transitions. Second operand 3 states. [2020-07-20 10:41:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:30,662 INFO L93 Difference]: Finished difference Result 388 states and 470 transitions. [2020-07-20 10:41:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:30,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-07-20 10:41:30,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:30,668 INFO L225 Difference]: With dead ends: 388 [2020-07-20 10:41:30,668 INFO L226 Difference]: Without dead ends: 385 [2020-07-20 10:41:30,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 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 10:41:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-07-20 10:41:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2020-07-20 10:41:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-07-20 10:41:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 466 transitions. [2020-07-20 10:41:30,701 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 466 transitions. Word has length 62 [2020-07-20 10:41:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:30,701 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 466 transitions. [2020-07-20 10:41:30,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 466 transitions. [2020-07-20 10:41:30,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-20 10:41:30,704 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:30,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:41:30,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:30,918 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:30,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1598107034, now seen corresponding path program 1 times [2020-07-20 10:41:30,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:30,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380890193] [2020-07-20 10:41:30,919 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 10:41:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:31,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:41:31,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 10:41:31,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:31,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380890193] [2020-07-20 10:41:31,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:31,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:41:31,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784474638] [2020-07-20 10:41:31,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:31,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:31,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:31,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:41:31,155 INFO L87 Difference]: Start difference. First operand 385 states and 466 transitions. Second operand 6 states. [2020-07-20 10:41:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:31,362 INFO L93 Difference]: Finished difference Result 900 states and 1137 transitions. [2020-07-20 10:41:31,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:41:31,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2020-07-20 10:41:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:31,368 INFO L225 Difference]: With dead ends: 900 [2020-07-20 10:41:31,368 INFO L226 Difference]: Without dead ends: 543 [2020-07-20 10:41:31,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 10:41:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2020-07-20 10:41:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 519. [2020-07-20 10:41:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2020-07-20 10:41:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 634 transitions. [2020-07-20 10:41:31,413 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 634 transitions. Word has length 93 [2020-07-20 10:41:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:31,415 INFO L479 AbstractCegarLoop]: Abstraction has 519 states and 634 transitions. [2020-07-20 10:41:31,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 634 transitions. [2020-07-20 10:41:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-20 10:41:31,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:31,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:31,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:31,641 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:31,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1938961693, now seen corresponding path program 1 times [2020-07-20 10:41:31,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:31,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105042835] [2020-07-20 10:41:31,644 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 10:41:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:31,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 10:41:31,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-20 10:41:31,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:31,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105042835] [2020-07-20 10:41:31,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:31,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:41:31,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691719049] [2020-07-20 10:41:31,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:41:31,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:31,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:41:31,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:41:31,863 INFO L87 Difference]: Start difference. First operand 519 states and 634 transitions. Second operand 3 states. [2020-07-20 10:41:31,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:31,956 INFO L93 Difference]: Finished difference Result 833 states and 1022 transitions. [2020-07-20 10:41:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:41:31,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-07-20 10:41:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:31,961 INFO L225 Difference]: With dead ends: 833 [2020-07-20 10:41:31,961 INFO L226 Difference]: Without dead ends: 342 [2020-07-20 10:41:31,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 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 10:41:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-07-20 10:41:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 328. [2020-07-20 10:41:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-07-20 10:41:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 390 transitions. [2020-07-20 10:41:31,997 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 390 transitions. Word has length 135 [2020-07-20 10:41:31,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:31,997 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 390 transitions. [2020-07-20 10:41:31,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:41:31,997 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 390 transitions. [2020-07-20 10:41:32,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-20 10:41:32,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:32,000 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-07-20 10:41:32,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:32,207 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:32,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:32,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1046891419, now seen corresponding path program 1 times [2020-07-20 10:41:32,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:32,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360791084] [2020-07-20 10:41:32,210 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 10:41:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:32,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 10:41:32,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 10:41:32,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:32,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360791084] [2020-07-20 10:41:32,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:32,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:41:32,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374412975] [2020-07-20 10:41:32,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:32,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:32,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:32,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:41:32,482 INFO L87 Difference]: Start difference. First operand 328 states and 390 transitions. Second operand 6 states. [2020-07-20 10:41:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:33,169 INFO L93 Difference]: Finished difference Result 1162 states and 1553 transitions. [2020-07-20 10:41:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:41:33,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-07-20 10:41:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:33,176 INFO L225 Difference]: With dead ends: 1162 [2020-07-20 10:41:33,176 INFO L226 Difference]: Without dead ends: 862 [2020-07-20 10:41:33,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 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 10:41:33,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2020-07-20 10:41:33,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 802. [2020-07-20 10:41:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2020-07-20 10:41:33,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1012 transitions. [2020-07-20 10:41:33,224 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1012 transitions. Word has length 138 [2020-07-20 10:41:33,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:33,224 INFO L479 AbstractCegarLoop]: Abstraction has 802 states and 1012 transitions. [2020-07-20 10:41:33,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:33,224 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1012 transitions. [2020-07-20 10:41:33,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-20 10:41:33,228 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:33,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:33,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:33,442 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:33,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:33,442 INFO L82 PathProgramCache]: Analyzing trace with hash 995096820, now seen corresponding path program 1 times [2020-07-20 10:41:33,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:33,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646169340] [2020-07-20 10:41:33,443 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 10:41:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:33,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 10:41:33,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 10:41:33,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:33,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646169340] [2020-07-20 10:41:33,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:33,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 10:41:33,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271919882] [2020-07-20 10:41:33,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 10:41:33,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:33,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 10:41:33,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 10:41:33,732 INFO L87 Difference]: Start difference. First operand 802 states and 1012 transitions. Second operand 8 states. [2020-07-20 10:41:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:35,118 INFO L93 Difference]: Finished difference Result 2361 states and 3240 transitions. [2020-07-20 10:41:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 10:41:35,119 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-07-20 10:41:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:35,132 INFO L225 Difference]: With dead ends: 2361 [2020-07-20 10:41:35,133 INFO L226 Difference]: Without dead ends: 1587 [2020-07-20 10:41:35,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-07-20 10:41:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-07-20 10:41:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1305. [2020-07-20 10:41:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-07-20 10:41:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1706 transitions. [2020-07-20 10:41:35,264 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1706 transitions. Word has length 142 [2020-07-20 10:41:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:35,265 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1706 transitions. [2020-07-20 10:41:35,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 10:41:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1706 transitions. [2020-07-20 10:41:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-20 10:41:35,269 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:35,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-07-20 10:41:35,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:35,484 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:35,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2017182426, now seen corresponding path program 1 times [2020-07-20 10:41:35,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:35,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120387554] [2020-07-20 10:41:35,487 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 10:41:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:35,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 10:41:35,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-20 10:41:35,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:35,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120387554] [2020-07-20 10:41:35,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:35,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:41:35,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851963861] [2020-07-20 10:41:35,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:41:35,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:35,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:41:35,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:41:35,720 INFO L87 Difference]: Start difference. First operand 1305 states and 1706 transitions. Second operand 5 states. [2020-07-20 10:41:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:35,802 INFO L93 Difference]: Finished difference Result 2582 states and 3490 transitions. [2020-07-20 10:41:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:41:35,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-07-20 10:41:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:35,812 INFO L225 Difference]: With dead ends: 2582 [2020-07-20 10:41:35,812 INFO L226 Difference]: Without dead ends: 1305 [2020-07-20 10:41:35,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 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 10:41:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2020-07-20 10:41:35,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1305. [2020-07-20 10:41:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-07-20 10:41:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1702 transitions. [2020-07-20 10:41:35,922 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1702 transitions. Word has length 138 [2020-07-20 10:41:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:35,923 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1702 transitions. [2020-07-20 10:41:35,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:41:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1702 transitions. [2020-07-20 10:41:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-20 10:41:35,926 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:35,927 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1] [2020-07-20 10:41:36,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:36,141 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:36,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:36,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1691508648, now seen corresponding path program 1 times [2020-07-20 10:41:36,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:36,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735160516] [2020-07-20 10:41:36,144 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 10:41:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:36,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 10:41:36,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-20 10:41:36,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:41:36,570 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-20 10:41:36,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735160516] [2020-07-20 10:41:36,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 10:41:36,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2020-07-20 10:41:36,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155332472] [2020-07-20 10:41:36,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:36,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:36,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:36,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:41:36,572 INFO L87 Difference]: Start difference. First operand 1305 states and 1702 transitions. Second operand 6 states. [2020-07-20 10:41:36,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:36,887 INFO L93 Difference]: Finished difference Result 3682 states and 5017 transitions. [2020-07-20 10:41:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 10:41:36,888 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-07-20 10:41:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:36,913 INFO L225 Difference]: With dead ends: 3682 [2020-07-20 10:41:36,913 INFO L226 Difference]: Without dead ends: 2405 [2020-07-20 10:41:36,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 271 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 10:41:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2020-07-20 10:41:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2093. [2020-07-20 10:41:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-07-20 10:41:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2688 transitions. [2020-07-20 10:41:37,199 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2688 transitions. Word has length 138 [2020-07-20 10:41:37,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:37,202 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 2688 transitions. [2020-07-20 10:41:37,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2688 transitions. [2020-07-20 10:41:37,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-20 10:41:37,210 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:37,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:41:37,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:37,426 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:37,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:37,426 INFO L82 PathProgramCache]: Analyzing trace with hash 158970484, now seen corresponding path program 1 times [2020-07-20 10:41:37,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:37,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262464200] [2020-07-20 10:41:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:37,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 10:41:37,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 10:41:37,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:37,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262464200] [2020-07-20 10:41:37,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:37,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 10:41:37,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68798682] [2020-07-20 10:41:37,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 10:41:37,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:37,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 10:41:37,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 10:41:37,673 INFO L87 Difference]: Start difference. First operand 2093 states and 2688 transitions. Second operand 8 states. [2020-07-20 10:41:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:38,143 INFO L93 Difference]: Finished difference Result 3939 states and 5116 transitions. [2020-07-20 10:41:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 10:41:38,143 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-07-20 10:41:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:38,155 INFO L225 Difference]: With dead ends: 3939 [2020-07-20 10:41:38,155 INFO L226 Difference]: Without dead ends: 1874 [2020-07-20 10:41:38,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 10:41:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2020-07-20 10:41:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1874. [2020-07-20 10:41:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1874 states. [2020-07-20 10:41:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2315 transitions. [2020-07-20 10:41:38,353 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2315 transitions. Word has length 142 [2020-07-20 10:41:38,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:38,353 INFO L479 AbstractCegarLoop]: Abstraction has 1874 states and 2315 transitions. [2020-07-20 10:41:38,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 10:41:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2315 transitions. [2020-07-20 10:41:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-07-20 10:41:38,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:38,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 10:41:38,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:38,581 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:38,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:38,582 INFO L82 PathProgramCache]: Analyzing trace with hash 359416899, now seen corresponding path program 1 times [2020-07-20 10:41:38,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:38,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136643158] [2020-07-20 10:41:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:38,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-20 10:41:38,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 66 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-20 10:41:38,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 10:41:39,009 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:41:39,026 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:41:39,067 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:41:39,124 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:41:39,149 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 10:41:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-07-20 10:41:39,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136643158] [2020-07-20 10:41:39,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 10:41:39,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2020-07-20 10:41:39,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292391201] [2020-07-20 10:41:39,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 10:41:39,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:39,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 10:41:39,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-07-20 10:41:39,233 INFO L87 Difference]: Start difference. First operand 1874 states and 2315 transitions. Second operand 10 states. [2020-07-20 10:41:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:40,673 INFO L93 Difference]: Finished difference Result 5299 states and 7109 transitions. [2020-07-20 10:41:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 10:41:40,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 178 [2020-07-20 10:41:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:40,702 INFO L225 Difference]: With dead ends: 5299 [2020-07-20 10:41:40,702 INFO L226 Difference]: Without dead ends: 3453 [2020-07-20 10:41:40,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 341 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-07-20 10:41:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2020-07-20 10:41:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 2375. [2020-07-20 10:41:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2375 states. [2020-07-20 10:41:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 2908 transitions. [2020-07-20 10:41:40,877 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 2908 transitions. Word has length 178 [2020-07-20 10:41:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:40,878 INFO L479 AbstractCegarLoop]: Abstraction has 2375 states and 2908 transitions. [2020-07-20 10:41:40,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 10:41:40,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 2908 transitions. [2020-07-20 10:41:40,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-07-20 10:41:40,885 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:40,886 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 10:41:41,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:41,100 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:41,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1745620293, now seen corresponding path program 1 times [2020-07-20 10:41:41,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:41,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203262144] [2020-07-20 10:41:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:41:41,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:41:41,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:41:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-20 10:41:41,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:41:41,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203262144] [2020-07-20 10:41:41,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:41:41,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:41:41,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648563063] [2020-07-20 10:41:41,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:41:41,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:41:41,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:41:41,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:41:41,378 INFO L87 Difference]: Start difference. First operand 2375 states and 2908 transitions. Second operand 6 states. [2020-07-20 10:41:41,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:41:41,476 INFO L93 Difference]: Finished difference Result 4487 states and 5636 transitions. [2020-07-20 10:41:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:41:41,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-07-20 10:41:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:41:41,487 INFO L225 Difference]: With dead ends: 4487 [2020-07-20 10:41:41,488 INFO L226 Difference]: Without dead ends: 2140 [2020-07-20 10:41:41,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 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 10:41:41,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2020-07-20 10:41:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2113. [2020-07-20 10:41:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-07-20 10:41:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2556 transitions. [2020-07-20 10:41:41,602 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2556 transitions. Word has length 178 [2020-07-20 10:41:41,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:41:41,603 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2556 transitions. [2020-07-20 10:41:41,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:41:41,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2556 transitions. [2020-07-20 10:41:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-20 10:41:41,608 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:41:41,608 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-20 10:41:41,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:41,824 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:41:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:41:41,825 INFO L82 PathProgramCache]: Analyzing trace with hash 464766112, now seen corresponding path program 1 times [2020-07-20 10:41:41,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:41:41,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402490783] [2020-07-20 10:41:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:41:42,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:41:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:41:42,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:41:42,500 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:41:42,500 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:41:42,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:41:42,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:41:42 BoogieIcfgContainer [2020-07-20 10:41:42,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:41:42,975 INFO L168 Benchmark]: Toolchain (without parser) took 16213.70 ms. Allocated memory was 141.6 MB in the beginning and 489.2 MB in the end (delta: 347.6 MB). Free memory was 102.0 MB in the beginning and 123.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 325.8 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:42,977 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:41:42,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.18 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 173.7 MB in the end (delta: -72.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:42,983 INFO L168 Benchmark]: Boogie Preprocessor took 90.18 ms. Allocated memory is still 204.5 MB. Free memory was 173.7 MB in the beginning and 169.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:42,984 INFO L168 Benchmark]: RCFGBuilder took 1042.26 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 169.5 MB in the beginning and 199.0 MB in the end (delta: -29.5 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:42,987 INFO L168 Benchmark]: TraceAbstraction took 14445.17 ms. Allocated memory was 237.0 MB in the beginning and 489.2 MB in the end (delta: 252.2 MB). Free memory was 199.0 MB in the beginning and 123.7 MB in the end (delta: 75.2 MB). Peak memory consumption was 327.4 MB. Max. memory is 7.1 GB. [2020-07-20 10:41:42,994 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 628.18 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 101.5 MB in the beginning and 173.7 MB in the end (delta: -72.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.18 ms. Allocated memory is still 204.5 MB. Free memory was 173.7 MB in the beginning and 169.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1042.26 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 169.5 MB in the beginning and 199.0 MB in the end (delta: -29.5 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14445.17 ms. Allocated memory was 237.0 MB in the beginning and 489.2 MB in the end (delta: 252.2 MB). Free memory was 199.0 MB in the beginning and 123.7 MB in the end (delta: 75.2 MB). Peak memory consumption was 327.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L132] int pumpRunning = 0; [L133] int systemActive = 1; [L364] int cleanupTimeShifts = 4; [L462] int methAndRunningLastTime ; [L502] int waterLevel = 1; [L503] int methaneLevelCritical = 0; [L765] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=90, \old(head)=88, \old(head)=29, \old(methAndRunningLastTime)=35, \old(methaneLevelCritical)=38, \old(pumpRunning)=64, \old(systemActive)=95, \old(waterLevel)=42, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L439] int retValue_acc ; [L440] 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] [L444] 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] [L445] 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] [L446] 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] [L355] int retValue_acc ; [L358] retValue_acc = 1 [L359] 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] [L446] 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] [L446] tmp = valid_product() [L448] 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] [L450] 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] [L451] 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] [L432] 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] [L467] 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] [L432] 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] [L433] 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] [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] 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] [L65] 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] [L67] 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] [L73] tmp = __VERIFIER_nondet_int() [L75] 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] [L77] 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] [L520] COND TRUE waterLevel < 2 [L521] 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] [L77] 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] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] 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=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L101] tmp___1 = __VERIFIER_nondet_int() [L103] COND FALSE !(\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=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L112] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L147] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L149] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L169] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L174] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L284] int retValue_acc ; [L285] int tmp ; [L286] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L290] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L582] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L585] COND FALSE !(waterLevel < 2) [L589] retValue_acc = 0 [L590] 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=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L290] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L290] tmp = isHighWaterSensorDry() [L292] COND FALSE !(\read(tmp)) [L295] 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=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L297] retValue_acc = tmp___0 [L298] 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=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L174] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L174] tmp = isHighWaterLevel() [L176] 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=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L178] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L203] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L207] CALL, EXPR isMethaneAlarm() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L228] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L232] 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=0, pumpRunning=0, systemActive=1, waterLevel=2] [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] 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=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L232] 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()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L232] retValue_acc = isMethaneLevelCritical() [L234] 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=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L207] RET, EXPR isMethaneAlarm() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L207] tmp = isMethaneAlarm() [L209] COND FALSE !(\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=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L213] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] 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=0, pumpRunning=1, systemActive=1, waterLevel=2] [L213] RET activatePump__wrappee__highWaterSensor() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L178] 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=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L149] 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=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] 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=0, pumpRunning=1, systemActive=1, waterLevel=2] [L472] int tmp ; [L473] 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=0, pumpRunning=1, systemActive=1, waterLevel=2] [L477] 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=0, pumpRunning=1, systemActive=1, waterLevel=2] [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] 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=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L477] 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()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L477] tmp = isMethaneLevelCritical() [L479] COND FALSE !(\read(tmp)) [L495] methAndRunningLastTime = 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=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L155] 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=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L112] RET timeShift() 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=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L65] 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=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L67] 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=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L73] tmp = __VERIFIER_nondet_int() [L75] 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=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] 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=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L87] 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=1, systemActive=1, waterLevel=2] [L532] COND FALSE !(\read(methaneLevelCritical)) [L535] 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=1, systemActive=1, waterLevel=2] [L87] 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=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L101] tmp___1 = __VERIFIER_nondet_int() [L103] COND FALSE !(\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=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L112] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L140] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L142] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L508] COND TRUE waterLevel > 0 [L509] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L142] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L147] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L149] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L169] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L172] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L187] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L149] RET processEnvironment() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L155] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L472] int tmp ; [L473] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L477] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \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=1] [L477] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L477] tmp = isMethaneLevelCritical() [L479] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L481] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L239] int retValue_acc ; [L242] retValue_acc = pumpRunning [L243] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \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=1] [L481] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L481] tmp___0 = isPumpRunning() [L483] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \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=1] [L484] COND FALSE !(\read(methAndRunningLastTime)) [L489] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \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] [L155] RET __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=0, \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] [L112] 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=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=1] [L65] 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=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=1] [L67] 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=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] 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=0, tmp___2=0, waterLevel=1] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] 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=0, tmp___2=0, waterLevel=1] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___2)) [L101] tmp___1 = __VERIFIER_nondet_int() [L103] COND FALSE !(\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=0, tmp___2=0, waterLevel=1] [L112] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L140] COND TRUE \read(pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L142] CALL lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L508] COND TRUE waterLevel > 0 [L509] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L142] RET lowerWaterLevel() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L147] COND TRUE \read(systemActive) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L149] CALL processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L169] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L172] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L187] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L149] RET processEnvironment() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L155] CALL __utac_acc__Specification2_spec__2() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L472] int tmp ; [L473] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L477] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L541] int retValue_acc ; [L544] retValue_acc = methaneLevelCritical [L545] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L477] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L477] tmp = isMethaneLevelCritical() [L479] COND TRUE \read(tmp) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=0] [L481] CALL, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L239] int retValue_acc ; [L242] retValue_acc = pumpRunning [L243] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L481] RET, EXPR isPumpRunning() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=0] [L481] tmp___0 = isPumpRunning() [L483] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L484] COND TRUE \read(methAndRunningLastTime) VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L486] CALL __automaton_fail() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L44] __VERIFIER_error() VAL [\old(methAndRunningLastTime)=1, \old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 237 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.1s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2365 SDtfs, 2352 SDslu, 3984 SDs, 0 SdLazy, 2680 SolverSat, 1092 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1835 GetRequests, 1762 SyntacticMatches, 11 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2375occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 1809 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1686 NumberOfCodeBlocks, 1686 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1805 ConstructedInterpolants, 0 QuantifiedInterpolants, 448523 SizeOfPredicates, 34 NumberOfNonLiveVariables, 10975 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 584/594 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...