/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:55:55,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:55:55,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:55:55,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:55:55,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:55:55,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:55:55,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:55:55,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:55:55,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:55:55,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:55:55,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:55:55,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:55:55,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:55:55,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:55:55,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:55:55,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:55:55,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:55:55,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:55:55,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:55:55,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:55:55,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:55:55,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:55:55,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:55:55,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:55:55,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:55:55,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:55:55,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:55:55,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:55:55,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:55:55,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:55:55,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:55:55,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:55:55,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:55:55,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:55:55,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:55:55,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:55:55,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:55:55,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:55:55,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:55:55,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:55:55,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:55:55,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:55:55,760 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:55:55,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:55:55,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:55:55,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:55:55,762 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:55:55,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:55:55,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:55:55,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:55:55,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:55:55,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:55:55,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:55:55,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:55:55,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:55:55,763 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:55:55,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:55:55,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:55:55,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:55:55,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:55:55,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:55:55,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:55:55,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:55:55,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:55:55,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:55:55,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:55:55,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:55:55,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:55:55,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:55:55,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:55:55,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:55:55,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:55:56,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:55:56,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:55:56,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:55:56,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:55:56,110 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:55:56,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-18 20:55:56,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7a9b1b4b/9542c83eb5954dc48d3c96ad0c88d6dd/FLAG893944900 [2020-08-18 20:55:56,635 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:55:56,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-18 20:55:56,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7a9b1b4b/9542c83eb5954dc48d3c96ad0c88d6dd/FLAG893944900 [2020-08-18 20:55:57,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7a9b1b4b/9542c83eb5954dc48d3c96ad0c88d6dd [2020-08-18 20:55:57,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:55:57,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:55:57,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:55:57,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:55:57,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:55:57,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:55:57" (1/1) ... [2020-08-18 20:55:57,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4d4318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57, skipping insertion in model container [2020-08-18 20:55:57,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:55:57" (1/1) ... [2020-08-18 20:55:57,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:55:57,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:55:57,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:55:57,636 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:55:57,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:55:57,750 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:55:57,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57 WrapperNode [2020-08-18 20:55:57,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:55:57,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:55:57,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:55:57,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:55:57,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57" (1/1) ... [2020-08-18 20:55:57,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57" (1/1) ... [2020-08-18 20:55:57,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57" (1/1) ... [2020-08-18 20:55:57,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57" (1/1) ... [2020-08-18 20:55:57,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57" (1/1) ... [2020-08-18 20:55:57,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57" (1/1) ... [2020-08-18 20:55:57,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57" (1/1) ... [2020-08-18 20:55:57,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:55:57,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:55:57,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:55:57,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:55:57,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:55:57,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:55:57,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:55:57,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:55:57,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:55:57,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:55:57,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:55:57,933 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:55:57,933 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:55:57,934 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:55:57,934 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:55:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:55:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:55:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:55:57,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:55:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:55:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:55:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:55:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:55:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:55:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:55:57,938 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:55:57,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:55:57,938 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:55:57,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:55:57,939 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:55:57,939 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:55:57,939 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:55:57,939 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:55:57,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:55:57,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:55:57,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:55:57,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:55:57,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:55:57,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:55:57,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:55:57,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:55:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:55:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:55:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:55:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:55:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:55:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:55:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:55:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:55:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:55:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:55:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:55:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:55:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:55:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:55:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:55:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:55:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:55:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:55:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:55:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:55:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:55:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:55:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:55:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:55:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:55:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:55:57,945 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:55:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:55:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:55:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:55:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:55:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:55:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:55:57,946 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:55:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:55:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:55:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:55:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:55:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:55:57,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:55:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:55:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:55:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:55:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:55:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:55:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:55:57,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:55:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:55:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:55:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:55:59,079 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:55:59,079 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:55:59,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:55:59 BoogieIcfgContainer [2020-08-18 20:55:59,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:55:59,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:55:59,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:55:59,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:55:59,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:55:57" (1/3) ... [2020-08-18 20:55:59,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2912cb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:55:59, skipping insertion in model container [2020-08-18 20:55:59,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:55:57" (2/3) ... [2020-08-18 20:55:59,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2912cb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:55:59, skipping insertion in model container [2020-08-18 20:55:59,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:55:59" (3/3) ... [2020-08-18 20:55:59,093 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product06.cil.c [2020-08-18 20:55:59,104 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:55:59,112 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:55:59,128 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:55:59,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:55:59,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:55:59,155 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:55:59,155 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:55:59,155 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:55:59,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:55:59,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:55:59,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:55:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-08-18 20:55:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:55:59,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:55:59,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:55:59,192 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:55:59,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:55:59,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1057158692, now seen corresponding path program 1 times [2020-08-18 20:55:59,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:55:59,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181515693] [2020-08-18 20:55:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:55:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:55:59,883 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:55:59,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:55:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:00,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:00,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:00,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:00,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:00,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181515693] [2020-08-18 20:56:00,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:00,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:56:00,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102678501] [2020-08-18 20:56:00,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:56:00,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:00,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:56:00,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:56:00,106 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-08-18 20:56:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:01,124 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-18 20:56:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:56:01,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 20:56:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:01,146 INFO L225 Difference]: With dead ends: 258 [2020-08-18 20:56:01,146 INFO L226 Difference]: Without dead ends: 140 [2020-08-18 20:56:01,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:56:01,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-18 20:56:01,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-18 20:56:01,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 20:56:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-18 20:56:01,299 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52 [2020-08-18 20:56:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:01,299 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-18 20:56:01,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:56:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-18 20:56:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 20:56:01,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:01,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:01,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:56:01,310 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:01,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1710283751, now seen corresponding path program 1 times [2020-08-18 20:56:01,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:01,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726522677] [2020-08-18 20:56:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,685 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:56:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:56:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:56:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:01,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726522677] [2020-08-18 20:56:01,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:01,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:56:01,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878586360] [2020-08-18 20:56:01,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:56:01,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:01,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:56:01,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:56:01,755 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-18 20:56:02,225 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:02,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:02,853 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-18 20:56:02,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:56:02,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 20:56:02,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:02,856 INFO L225 Difference]: With dead ends: 187 [2020-08-18 20:56:02,857 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 20:56:02,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:56:02,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 20:56:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 20:56:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 20:56:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-18 20:56:02,890 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53 [2020-08-18 20:56:02,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:02,890 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-18 20:56:02,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:56:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-18 20:56:02,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:56:02,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:02,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:02,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:56:02,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:02,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:02,894 INFO L82 PathProgramCache]: Analyzing trace with hash -830709307, now seen corresponding path program 1 times [2020-08-18 20:56:02,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:02,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751509146] [2020-08-18 20:56:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,182 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:03,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:56:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:03,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751509146] [2020-08-18 20:56:03,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:03,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:03,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445990511] [2020-08-18 20:56:03,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:03,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:03,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:03,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:03,302 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-18 20:56:03,656 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:03,946 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:04,173 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:04,409 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:05,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:05,353 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-18 20:56:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:56:05,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 20:56:05,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:05,356 INFO L225 Difference]: With dead ends: 200 [2020-08-18 20:56:05,356 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 20:56:05,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:56:05,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 20:56:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 20:56:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 20:56:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-18 20:56:05,387 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58 [2020-08-18 20:56:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:05,387 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-18 20:56:05,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-18 20:56:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 20:56:05,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:05,389 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] [2020-08-18 20:56:05,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:56:05,389 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:05,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1834721556, now seen corresponding path program 1 times [2020-08-18 20:56:05,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:05,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323931419] [2020-08-18 20:56:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,679 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:56:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 20:56:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 20:56:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 20:56:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:05,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323931419] [2020-08-18 20:56:05,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:05,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:05,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381135932] [2020-08-18 20:56:05,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:05,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:05,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:05,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:05,780 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states. [2020-08-18 20:56:06,129 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:07,387 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:07,701 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:07,933 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:08,321 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:08,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:08,613 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-08-18 20:56:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:56:08,615 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-18 20:56:08,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:08,619 INFO L225 Difference]: With dead ends: 299 [2020-08-18 20:56:08,620 INFO L226 Difference]: Without dead ends: 223 [2020-08-18 20:56:08,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:56:08,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-08-18 20:56:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2020-08-18 20:56:08,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-18 20:56:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-08-18 20:56:08,667 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66 [2020-08-18 20:56:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:08,668 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-08-18 20:56:08,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-08-18 20:56:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 20:56:08,669 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:08,670 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] [2020-08-18 20:56:08,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:56:08,670 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:08,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1027907532, now seen corresponding path program 1 times [2020-08-18 20:56:08,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:08,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1272268383] [2020-08-18 20:56:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,914 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:08,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:56:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:56:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 20:56:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:56:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 20:56:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:08,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:08,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1272268383] [2020-08-18 20:56:08,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:08,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:56:08,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441961600] [2020-08-18 20:56:08,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:56:08,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:08,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:56:08,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:56:08,992 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-08-18 20:56:09,351 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:09,958 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2020-08-18 20:56:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 20:56:09,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-08-18 20:56:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:09,961 INFO L225 Difference]: With dead ends: 296 [2020-08-18 20:56:09,961 INFO L226 Difference]: Without dead ends: 146 [2020-08-18 20:56:09,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:56:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-18 20:56:09,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-18 20:56:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 20:56:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-18 20:56:09,994 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 74 [2020-08-18 20:56:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:09,995 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-18 20:56:09,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:56:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-18 20:56:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 20:56:09,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:09,996 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] [2020-08-18 20:56:09,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:56:09,997 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:09,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1882239654, now seen corresponding path program 1 times [2020-08-18 20:56:09,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:09,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002033054] [2020-08-18 20:56:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:56:10,062 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:56:10,062 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:56:10,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:56:10,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:56:10 BoogieIcfgContainer [2020-08-18 20:56:10,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:56:10,092 INFO L168 Benchmark]: Toolchain (without parser) took 13053.04 ms. Allocated memory was 138.9 MB in the beginning and 446.7 MB in the end (delta: 307.8 MB). Free memory was 100.8 MB in the beginning and 279.4 MB in the end (delta: -178.6 MB). Peak memory consumption was 129.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:10,093 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:56:10,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.73 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.5 MB in the beginning and 168.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:10,095 INFO L168 Benchmark]: Boogie Preprocessor took 98.90 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 164.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:10,096 INFO L168 Benchmark]: RCFGBuilder took 1234.14 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 164.8 MB in the beginning and 199.0 MB in the end (delta: -34.2 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:10,097 INFO L168 Benchmark]: TraceAbstraction took 11004.48 ms. Allocated memory was 233.8 MB in the beginning and 446.7 MB in the end (delta: 212.9 MB). Free memory was 197.6 MB in the beginning and 279.4 MB in the end (delta: -81.8 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:56:10,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.73 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.5 MB in the beginning and 168.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.90 ms. Allocated memory is still 201.9 MB. Free memory was 168.9 MB in the beginning and 164.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1234.14 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 164.8 MB in the beginning and 199.0 MB in the end (delta: -34.2 MB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11004.48 ms. Allocated memory was 233.8 MB in the beginning and 446.7 MB in the end (delta: 212.9 MB). Free memory was 197.6 MB in the beginning and 279.4 MB in the end (delta: -81.8 MB). Peak memory consumption was 131.1 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: [L96] int pumpRunning = 0; [L97] int systemActive = 1; [L309] int waterLevel = 1; [L310] int methaneLevelCritical = 0; [L389] int cleanupTimeShifts = 4; [L654] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L462] int retValue_acc ; [L463] int tmp ; [L467] FCALL select_helpers() [L468] FCALL select_features() [L469] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L469] RET, EXPR valid_product() [L469] tmp = valid_product() [L471] COND TRUE \read(tmp) [L473] FCALL setup() [L474] CALL runTest() [L456] CALL test() [L242] int splverifierCounter ; [L243] int tmp ; [L244] int tmp___0 ; [L245] int tmp___1 ; [L246] int tmp___2 ; [L249] splverifierCounter = 0 [L251] COND TRUE 1 [L253] COND TRUE splverifierCounter < 4 [L259] tmp = __VERIFIER_nondet_int() [L261] COND TRUE \read(tmp) [L263] CALL waterRise() [L327] COND TRUE waterLevel < 2 [L328] waterLevel = waterLevel + 1 [L263] RET waterRise() [L269] tmp___0 = __VERIFIER_nondet_int() [L271] COND FALSE !(\read(tmp___0)) [L279] tmp___2 = __VERIFIER_nondet_int() [L281] COND FALSE !(\read(tmp___2)) [L287] tmp___1 = __VERIFIER_nondet_int() [L289] COND TRUE \read(tmp___1) [L296] CALL timeShift() [L104] COND FALSE !(\read(pumpRunning)) [L111] COND TRUE \read(systemActive) [L113] CALL processEnvironment() [L133] int tmp ; [L136] COND FALSE !(\read(pumpRunning)) [L151] FCALL processEnvironment__wrappee__base() [L113] RET processEnvironment() [L119] CALL __utac_acc__Specification3_spec__1() [L852] int tmp ; [L853] int tmp___0 ; [L854] int tmp___1 ; [L858] CALL, EXPR isMethaneLevelCritical() [L348] int retValue_acc ; [L351] retValue_acc = methaneLevelCritical [L352] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] tmp = isMethaneLevelCritical() [L860] COND FALSE !(\read(tmp)) [L864] CALL, EXPR getWaterLevel() [L380] int retValue_acc ; [L383] retValue_acc = waterLevel [L384] return (retValue_acc); [L864] RET, EXPR getWaterLevel() [L864] tmp___0 = getWaterLevel() [L866] COND TRUE tmp___0 == 2 [L868] CALL, EXPR isPumpRunning() [L185] int retValue_acc ; [L188] retValue_acc = pumpRunning [L189] return (retValue_acc); [L868] RET, EXPR isPumpRunning() [L868] tmp___1 = isPumpRunning() [L870] COND FALSE !(\read(tmp___1)) [L874] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 446 SDtfs, 658 SDslu, 247 SDs, 0 SdLazy, 1341 SolverSat, 451 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 373 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 85738 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...