/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_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:40:25,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:40:25,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:40:25,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:40:25,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:40:25,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:40:25,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:40:25,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:40:25,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:40:25,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:40:25,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:40:25,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:40:25,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:40:25,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:40:25,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:40:25,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:40:25,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:40:25,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:40:25,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:40:25,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:40:25,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:40:25,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:40:25,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:40:25,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:40:25,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:40:25,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:40:25,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:40:25,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:40:25,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:40:25,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:40:25,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:40:25,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:40:25,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:40:25,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:40:25,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:40:25,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:40:25,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:40:25,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:40:25,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:40:25,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:40:25,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:40:25,734 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 10:40:25,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:40:25,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:40:25,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:40:25,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:40:25,750 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:40:25,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:40:25,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:40:25,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:40:25,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:40:25,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:40:25,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:40:25,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:40:25,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:40:25,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:40:25,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:40:25,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:40:25,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:40:25,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:40:25,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:40:25,753 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:40:25,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:40:25,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:40:25,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:40:25,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:40:25,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:40:25,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:40:25,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:25,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:40:25,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:40:25,755 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 10:40:26,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:40:26,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:40:26,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:40:26,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:40:26,036 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:40:26,036 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-20 10:40:26,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd228e717/7f398a5b1e094f5b8eb4921dec170dfd/FLAG435ef8d6d [2020-07-20 10:40:26,673 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:40:26,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-20 10:40:26,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd228e717/7f398a5b1e094f5b8eb4921dec170dfd/FLAG435ef8d6d [2020-07-20 10:40:26,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd228e717/7f398a5b1e094f5b8eb4921dec170dfd [2020-07-20 10:40:26,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:40:26,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:40:26,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:26,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:40:26,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:40:26,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:26" (1/1) ... [2020-07-20 10:40:26,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e9c12c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:26, skipping insertion in model container [2020-07-20 10:40:26,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:26" (1/1) ... [2020-07-20 10:40:26,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:40:27,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:40:27,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:27,446 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:40:27,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:27,556 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:40:27,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27 WrapperNode [2020-07-20 10:40:27,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:27,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:40:27,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:40:27,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:40:27,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (1/1) ... [2020-07-20 10:40:27,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:40:27,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:40:27,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:40:27,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:40:27,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (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 10:40:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:40:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:40:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 10:40:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 10:40:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 10:40:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 10:40:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 10:40:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 10:40:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 10:40:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 10:40:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 10:40:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 10:40:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 10:40:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 10:40:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 10:40:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 10:40:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 10:40:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 10:40:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 10:40:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 10:40:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 10:40:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 10:40:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 10:40:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 10:40:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 10:40:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 10:40:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 10:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 10:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 10:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 10:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 10:40:27,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 10:40:27,740 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 10:40:27,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 10:40:27,740 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 10:40:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 10:40:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 10:40:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 10:40:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 10:40:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 10:40:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 10:40:27,741 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 10:40:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 10:40:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 10:40:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 10:40:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 10:40:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 10:40:27,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 10:40:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 10:40:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 10:40:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:40:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 10:40:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 10:40:27,743 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 10:40:27,744 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 10:40:27,744 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 10:40:27,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 10:40:27,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 10:40:27,744 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 10:40:27,744 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 10:40:27,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 10:40:27,745 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 10:40:27,745 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 10:40:27,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:27,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 10:40:27,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 10:40:27,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:40:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 10:40:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:40:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:27,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:40:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 10:40:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 10:40:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 10:40:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 10:40:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 10:40:27,747 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 10:40:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:40:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:40:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 10:40:27,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:40:28,915 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:40:28,915 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 10:40:28,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:28 BoogieIcfgContainer [2020-07-20 10:40:28,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:40:28,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:40:28,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:40:28,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:40:28,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:40:26" (1/3) ... [2020-07-20 10:40:28,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9c4261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:28, skipping insertion in model container [2020-07-20 10:40:28,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:27" (2/3) ... [2020-07-20 10:40:28,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a9c4261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:28, skipping insertion in model container [2020-07-20 10:40:28,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:28" (3/3) ... [2020-07-20 10:40:28,930 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-07-20 10:40:28,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:40:28,949 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:40:28,964 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:40:28,990 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:40:28,990 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:40:28,990 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:40:28,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:40:28,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:40:28,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:40:28,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:40:28,991 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:40:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-07-20 10:40:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 10:40:29,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:29,023 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] [2020-07-20 10:40:29,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:29,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:29,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053206, now seen corresponding path program 1 times [2020-07-20 10:40:29,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:29,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308296125] [2020-07-20 10:40:29,039 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 10:40:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:29,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:40:29,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:29,320 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 10:40:29,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:29,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308296125] [2020-07-20 10:40:29,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:29,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:40:29,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861009482] [2020-07-20 10:40:29,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:40:29,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:40:29,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:40:29,345 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 2 states. [2020-07-20 10:40:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:29,385 INFO L93 Difference]: Finished difference Result 236 states and 291 transitions. [2020-07-20 10:40:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:40:29,387 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 10:40:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:29,400 INFO L225 Difference]: With dead ends: 236 [2020-07-20 10:40:29,400 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 10:40:29,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 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 10:40:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 10:40:29,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-20 10:40:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-20 10:40:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-07-20 10:40:29,472 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-07-20 10:40:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:29,473 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-07-20 10:40:29,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:40:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-07-20 10:40:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 10:40:29,478 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:29,478 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] [2020-07-20 10:40:29,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:29,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:29,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:29,692 INFO L82 PathProgramCache]: Analyzing trace with hash 83171531, now seen corresponding path program 1 times [2020-07-20 10:40:29,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:29,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784788862] [2020-07-20 10:40:29,693 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 10:40:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:29,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:40:29,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:29,958 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 10:40:29,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:29,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784788862] [2020-07-20 10:40:29,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:29,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:29,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579712680] [2020-07-20 10:40:29,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:29,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:29,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:29,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:29,962 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 3 states. [2020-07-20 10:40:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:29,983 INFO L93 Difference]: Finished difference Result 172 states and 199 transitions. [2020-07-20 10:40:29,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:29,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 10:40:29,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:29,987 INFO L225 Difference]: With dead ends: 172 [2020-07-20 10:40:29,987 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 10:40:29,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 10:40:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 10:40:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-20 10:40:30,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-20 10:40:30,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-07-20 10:40:30,002 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-07-20 10:40:30,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:30,003 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-07-20 10:40:30,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:30,003 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-07-20 10:40:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 10:40:30,005 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:30,005 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 10:40:30,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:30,221 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:30,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:30,222 INFO L82 PathProgramCache]: Analyzing trace with hash -532729622, now seen corresponding path program 1 times [2020-07-20 10:40:30,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:30,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687891091] [2020-07-20 10:40:30,223 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 10:40:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:30,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 10:40:30,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:30,445 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 10:40:30,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:30,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687891091] [2020-07-20 10:40:30,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:30,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:30,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131338119] [2020-07-20 10:40:30,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:30,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:30,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:30,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:30,448 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 3 states. [2020-07-20 10:40:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:30,480 INFO L93 Difference]: Finished difference Result 275 states and 326 transitions. [2020-07-20 10:40:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:30,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 10:40:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:30,484 INFO L225 Difference]: With dead ends: 275 [2020-07-20 10:40:30,484 INFO L226 Difference]: Without dead ends: 190 [2020-07-20 10:40:30,485 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 10:40:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-20 10:40:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2020-07-20 10:40:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-07-20 10:40:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-07-20 10:40:30,510 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 52 [2020-07-20 10:40:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:30,510 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-07-20 10:40:30,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:30,510 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-07-20 10:40:30,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 10:40:30,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:30,514 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 10:40:30,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:30,730 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:30,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:30,731 INFO L82 PathProgramCache]: Analyzing trace with hash 692647563, now seen corresponding path program 1 times [2020-07-20 10:40:30,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:30,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885005289] [2020-07-20 10:40:30,732 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 10:40:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:30,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:40:30,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:30,961 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 10:40:30,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:30,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885005289] [2020-07-20 10:40:30,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:30,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:30,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388702445] [2020-07-20 10:40:30,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:30,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:30,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:30,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:30,964 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 6 states. [2020-07-20 10:40:31,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:31,239 INFO L93 Difference]: Finished difference Result 436 states and 534 transitions. [2020-07-20 10:40:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:40:31,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 10:40:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:31,248 INFO L225 Difference]: With dead ends: 436 [2020-07-20 10:40:31,248 INFO L226 Difference]: Without dead ends: 282 [2020-07-20 10:40:31,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 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 10:40:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-20 10:40:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2020-07-20 10:40:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-07-20 10:40:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 327 transitions. [2020-07-20 10:40:31,283 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 327 transitions. Word has length 57 [2020-07-20 10:40:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:31,283 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 327 transitions. [2020-07-20 10:40:31,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 327 transitions. [2020-07-20 10:40:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-20 10:40:31,287 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:31,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:31,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:31,501 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:31,502 INFO L82 PathProgramCache]: Analyzing trace with hash 954578145, now seen corresponding path program 1 times [2020-07-20 10:40:31,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:31,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227731924] [2020-07-20 10:40:31,503 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 10:40:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:31,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 10:40:31,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:31,734 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 10:40:31,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:31,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227731924] [2020-07-20 10:40:31,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:31,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:31,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900325197] [2020-07-20 10:40:31,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:31,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:31,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:31,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:31,737 INFO L87 Difference]: Start difference. First operand 274 states and 327 transitions. Second operand 3 states. [2020-07-20 10:40:31,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:31,781 INFO L93 Difference]: Finished difference Result 766 states and 979 transitions. [2020-07-20 10:40:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:31,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-07-20 10:40:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:31,786 INFO L225 Difference]: With dead ends: 766 [2020-07-20 10:40:31,787 INFO L226 Difference]: Without dead ends: 516 [2020-07-20 10:40:31,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 1 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 10:40:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-07-20 10:40:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 513. [2020-07-20 10:40:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-07-20 10:40:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 640 transitions. [2020-07-20 10:40:31,836 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 640 transitions. Word has length 75 [2020-07-20 10:40:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:31,837 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 640 transitions. [2020-07-20 10:40:31,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 640 transitions. [2020-07-20 10:40:31,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 10:40:31,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:31,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:32,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:32,046 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:32,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:32,047 INFO L82 PathProgramCache]: Analyzing trace with hash 357740200, now seen corresponding path program 1 times [2020-07-20 10:40:32,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:32,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302640835] [2020-07-20 10:40:32,048 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 10:40:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:32,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 10:40:32,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:32,273 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 10:40:32,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:32,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302640835] [2020-07-20 10:40:32,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:32,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:32,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237174035] [2020-07-20 10:40:32,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:32,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:32,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:32,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:32,276 INFO L87 Difference]: Start difference. First operand 513 states and 640 transitions. Second operand 6 states. [2020-07-20 10:40:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:33,137 INFO L93 Difference]: Finished difference Result 1724 states and 2333 transitions. [2020-07-20 10:40:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 10:40:33,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-20 10:40:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:33,153 INFO L225 Difference]: With dead ends: 1724 [2020-07-20 10:40:33,153 INFO L226 Difference]: Without dead ends: 1235 [2020-07-20 10:40:33,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 10:40:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2020-07-20 10:40:33,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1125. [2020-07-20 10:40:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-07-20 10:40:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1461 transitions. [2020-07-20 10:40:33,286 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1461 transitions. Word has length 79 [2020-07-20 10:40:33,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:33,287 INFO L479 AbstractCegarLoop]: Abstraction has 1125 states and 1461 transitions. [2020-07-20 10:40:33,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:33,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1461 transitions. [2020-07-20 10:40:33,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-20 10:40:33,289 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:33,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:33,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:33,504 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:33,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:33,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1330285310, now seen corresponding path program 1 times [2020-07-20 10:40:33,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:33,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101692928] [2020-07-20 10:40:33,506 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 10:40:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:33,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 10:40:33,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:33,710 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 10:40:33,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:33,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101692928] [2020-07-20 10:40:33,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:33,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:33,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073301036] [2020-07-20 10:40:33,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:33,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:33,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:33,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:33,714 INFO L87 Difference]: Start difference. First operand 1125 states and 1461 transitions. Second operand 6 states. [2020-07-20 10:40:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:33,929 INFO L93 Difference]: Finished difference Result 3252 states and 4429 transitions. [2020-07-20 10:40:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:40:33,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-07-20 10:40:33,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:33,943 INFO L225 Difference]: With dead ends: 3252 [2020-07-20 10:40:33,943 INFO L226 Difference]: Without dead ends: 2151 [2020-07-20 10:40:33,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 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 10:40:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-07-20 10:40:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2115. [2020-07-20 10:40:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2115 states. [2020-07-20 10:40:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2760 transitions. [2020-07-20 10:40:34,065 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2760 transitions. Word has length 75 [2020-07-20 10:40:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:34,066 INFO L479 AbstractCegarLoop]: Abstraction has 2115 states and 2760 transitions. [2020-07-20 10:40:34,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2760 transitions. [2020-07-20 10:40:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 10:40:34,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:34,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:34,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:34,283 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:34,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:34,284 INFO L82 PathProgramCache]: Analyzing trace with hash -2136122490, now seen corresponding path program 1 times [2020-07-20 10:40:34,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:34,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831914264] [2020-07-20 10:40:34,285 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 10:40:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:34,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:40:34,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:34,507 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 10:40:34,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:34,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831914264] [2020-07-20 10:40:34,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:34,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:34,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229437966] [2020-07-20 10:40:34,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:34,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:34,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:34,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:34,509 INFO L87 Difference]: Start difference. First operand 2115 states and 2760 transitions. Second operand 6 states. [2020-07-20 10:40:34,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:34,617 INFO L93 Difference]: Finished difference Result 4266 states and 5724 transitions. [2020-07-20 10:40:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:40:34,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-20 10:40:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:34,632 INFO L225 Difference]: With dead ends: 4266 [2020-07-20 10:40:34,632 INFO L226 Difference]: Without dead ends: 2175 [2020-07-20 10:40:34,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 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 10:40:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2020-07-20 10:40:34,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 2175. [2020-07-20 10:40:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2175 states. [2020-07-20 10:40:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 2836 transitions. [2020-07-20 10:40:34,761 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 2836 transitions. Word has length 79 [2020-07-20 10:40:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:34,761 INFO L479 AbstractCegarLoop]: Abstraction has 2175 states and 2836 transitions. [2020-07-20 10:40:34,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 2836 transitions. [2020-07-20 10:40:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 10:40:34,764 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:34,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:34,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:34,978 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:34,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1649371716, now seen corresponding path program 1 times [2020-07-20 10:40:34,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:34,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441483512] [2020-07-20 10:40:34,980 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 10:40:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:35,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 10:40:35,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:35,199 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 10:40:35,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:35,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441483512] [2020-07-20 10:40:35,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:35,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:40:35,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475925907] [2020-07-20 10:40:35,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:40:35,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:35,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:40:35,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:40:35,202 INFO L87 Difference]: Start difference. First operand 2175 states and 2836 transitions. Second operand 5 states. [2020-07-20 10:40:35,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:35,296 INFO L93 Difference]: Finished difference Result 4078 states and 5448 transitions. [2020-07-20 10:40:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:40:35,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-07-20 10:40:35,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:35,316 INFO L225 Difference]: With dead ends: 4078 [2020-07-20 10:40:35,316 INFO L226 Difference]: Without dead ends: 1927 [2020-07-20 10:40:35,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 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 10:40:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2020-07-20 10:40:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1927. [2020-07-20 10:40:35,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1927 states. [2020-07-20 10:40:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2460 transitions. [2020-07-20 10:40:35,463 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2460 transitions. Word has length 79 [2020-07-20 10:40:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:35,463 INFO L479 AbstractCegarLoop]: Abstraction has 1927 states and 2460 transitions. [2020-07-20 10:40:35,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:40:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2460 transitions. [2020-07-20 10:40:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 10:40:35,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:35,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:35,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:35,683 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:35,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:35,683 INFO L82 PathProgramCache]: Analyzing trace with hash -453271351, now seen corresponding path program 1 times [2020-07-20 10:40:35,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:35,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196871561] [2020-07-20 10:40:35,684 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 10:40:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:35,912 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:36,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:36,256 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:40:36,256 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:40:36,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:36,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:40:36 BoogieIcfgContainer [2020-07-20 10:40:36,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:40:36,638 INFO L168 Benchmark]: Toolchain (without parser) took 9689.84 ms. Allocated memory was 138.9 MB in the beginning and 317.2 MB in the end (delta: 178.3 MB). Free memory was 101.7 MB in the beginning and 107.2 MB in the end (delta: -5.5 MB). Peak memory consumption was 172.8 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:36,644 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:40:36,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.52 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.3 MB in the beginning and 174.0 MB in the end (delta: -72.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:36,647 INFO L168 Benchmark]: Boogie Preprocessor took 104.63 ms. Allocated memory is still 203.9 MB. Free memory was 174.0 MB in the beginning and 169.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:36,647 INFO L168 Benchmark]: RCFGBuilder took 1259.00 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.4 MB in the beginning and 201.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:36,652 INFO L168 Benchmark]: TraceAbstraction took 7712.10 ms. Allocated memory was 237.5 MB in the beginning and 317.2 MB in the end (delta: 79.7 MB). Free memory was 201.3 MB in the beginning and 107.2 MB in the end (delta: 94.0 MB). Peak memory consumption was 173.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:36,660 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 607.52 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.3 MB in the beginning and 174.0 MB in the end (delta: -72.7 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.63 ms. Allocated memory is still 203.9 MB. Free memory was 174.0 MB in the beginning and 169.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1259.00 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.4 MB in the beginning and 201.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7712.10 ms. Allocated memory was 237.5 MB in the beginning and 317.2 MB in the end (delta: 79.7 MB). Free memory was 201.3 MB in the beginning and 107.2 MB in the end (delta: 94.0 MB). Peak memory consumption was 173.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=51, \old(head)=93, \old(head)=70, \old(methaneLevelCritical)=59, \old(pumpRunning)=24, \old(systemActive)=89, \old(waterLevel)=94, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L906] int retValue_acc ; [L907] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L911] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L912] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L913] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L913] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L913] tmp = valid_product() [L915] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L917] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L918] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L900] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L344] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L346] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L356] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L356] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L366] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L366] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND FALSE !(\read(tmp___2)) [L380] tmp___1 = __VERIFIER_nondet_int() [L382] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L391] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L68] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L75] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L77] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L97] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L100] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L102] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L194] int retValue_acc ; [L195] int tmp ; [L196] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L319] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L200] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L207] retValue_acc = tmp___0 [L208] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L102] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L102] tmp = isHighWaterLevel() [L104] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L106] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L125] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L106] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L77] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L83] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L808] int tmp ; [L809] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L813] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L813] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L813] tmp = isMethaneLevelCritical() [L815] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L817] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L817] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L817] tmp___0 = isPumpRunning() [L819] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L821] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1278 SDtfs, 632 SDslu, 2115 SDs, 0 SdLazy, 640 SolverSat, 216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 588 GetRequests, 556 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2175occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 169 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 672 NumberOfCodeBlocks, 672 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 70182 SizeOfPredicates, 24 NumberOfNonLiveVariables, 6247 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...