/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:14:19,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:14:19,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:14:19,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:14:19,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:14:19,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:14:19,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:14:19,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:14:19,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:14:19,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:14:19,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:14:19,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:14:19,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:14:19,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:14:19,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:14:19,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:14:19,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:14:19,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:14:19,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:14:19,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:14:19,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:14:19,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:14:19,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:14:19,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:14:19,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:14:19,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:14:19,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:14:19,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:14:19,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:14:19,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:14:19,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:14:19,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:14:19,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:14:19,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:14:19,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:14:19,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:14:19,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:14:19,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:14:19,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:14:19,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:14:19,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:14:19,701 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 15:14:19,724 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:14:19,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:14:19,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:14:19,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:14:19,726 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:14:19,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:14:19,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:14:19,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:14:19,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:14:19,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:14:19,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:14:19,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:14:19,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:14:19,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:14:19,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:14:19,728 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:14:19,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:14:19,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:14:19,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:14:19,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:14:19,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:14:19,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:14:19,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:14:19,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:14:19,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:14:19,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:14:19,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:14:19,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:14:19,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:14:19,731 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 -> false [2020-08-18 15:14:20,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:14:20,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:14:20,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:14:20,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:14:20,095 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:14:20,096 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-18 15:14:20,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bea98867/a6266cdafca3402eb8f21b24789501cf/FLAGed70fc348 [2020-08-18 15:14:20,671 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:14:20,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-18 15:14:20,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bea98867/a6266cdafca3402eb8f21b24789501cf/FLAGed70fc348 [2020-08-18 15:14:20,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3bea98867/a6266cdafca3402eb8f21b24789501cf [2020-08-18 15:14:20,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:14:20,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:14:20,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:14:20,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:14:20,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:14:20,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:14:20" (1/1) ... [2020-08-18 15:14:20,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7503bbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:20, skipping insertion in model container [2020-08-18 15:14:20,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:14:20" (1/1) ... [2020-08-18 15:14:20,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:14:21,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:14:21,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:14:21,513 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:14:21,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:14:21,654 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:14:21,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21 WrapperNode [2020-08-18 15:14:21,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:14:21,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:14:21,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:14:21,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:14:21,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21" (1/1) ... [2020-08-18 15:14:21,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21" (1/1) ... [2020-08-18 15:14:21,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21" (1/1) ... [2020-08-18 15:14:21,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21" (1/1) ... [2020-08-18 15:14:21,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21" (1/1) ... [2020-08-18 15:14:21,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21" (1/1) ... [2020-08-18 15:14:21,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21" (1/1) ... [2020-08-18 15:14:21,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:14:21,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:14:21,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:14:21,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:14:21,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21" (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 15:14:21,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:14:21,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:14:21,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:14:21,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:14:21,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:14:21,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:14:21,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:14:21,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:14:21,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:14:21,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 15:14:21,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:14:21,821 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:14:21,821 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:14:21,821 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:14:21,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:14:21,821 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:14:21,821 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:14:21,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:14:21,822 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:14:21,822 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:14:21,822 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:14:21,822 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:14:21,822 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:14:21,823 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:14:21,823 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:14:21,823 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:14:21,823 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:14:21,823 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:14:21,823 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:14:21,824 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 15:14:21,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:14:21,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:14:21,824 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:14:21,824 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:14:21,824 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:14:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:14:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:14:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:14:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:14:21,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:14:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:14:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:14:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:14:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:14:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:14:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:14:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:14:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:14:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:14:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:14:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:14:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:14:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:14:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:14:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:14:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:14:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:14:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:14:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:14:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:14:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:14:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:14:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 15:14:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:14:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:14:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:14:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:14:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:14:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:14:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 15:14:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:14:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:14:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:14:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:14:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:14:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:14:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:14:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:14:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:14:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 15:14:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:14:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:14:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:14:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:14:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:14:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:14:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:14:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:14:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:14:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:14:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:14:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:14:22,910 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:14:22,911 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:14:22,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:14:22 BoogieIcfgContainer [2020-08-18 15:14:22,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:14:22,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:14:22,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:14:22,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:14:22,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:14:20" (1/3) ... [2020-08-18 15:14:22,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a256ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:14:22, skipping insertion in model container [2020-08-18 15:14:22,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:21" (2/3) ... [2020-08-18 15:14:22,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a256ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:14:22, skipping insertion in model container [2020-08-18 15:14:22,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:14:22" (3/3) ... [2020-08-18 15:14:22,925 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-08-18 15:14:22,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:14:22,946 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:14:22,960 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:14:22,986 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:14:22,986 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:14:22,986 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:14:22,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:14:22,987 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:14:22,987 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:14:22,987 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:14:22,987 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:14:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-18 15:14:23,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 15:14:23,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:23,021 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] [2020-08-18 15:14:23,022 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:23,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:23,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-08-18 15:14:23,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:23,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519621522] [2020-08-18 15:14:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:23,781 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:23,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:23,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:23,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:14:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:23,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:14:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:23,859 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 15:14:23,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519621522] [2020-08-18 15:14:23,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:23,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:14:23,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459714193] [2020-08-18 15:14:23,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:14:23,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:23,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:14:23,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:14:23,888 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-18 15:14:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:25,114 INFO L93 Difference]: Finished difference Result 301 states and 397 transitions. [2020-08-18 15:14:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:14:25,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 15:14:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:25,131 INFO L225 Difference]: With dead ends: 301 [2020-08-18 15:14:25,131 INFO L226 Difference]: Without dead ends: 163 [2020-08-18 15:14:25,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 15:14:25,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-18 15:14:25,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-18 15:14:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-18 15:14:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-08-18 15:14:25,273 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-08-18 15:14:25,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:25,274 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-08-18 15:14:25,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:14:25,275 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-08-18 15:14:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 15:14:25,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:25,285 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] [2020-08-18 15:14:25,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:14:25,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:25,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-08-18 15:14:25,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:25,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450760412] [2020-08-18 15:14:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:25,656 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:14:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:14:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:25,717 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 15:14:25,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450760412] [2020-08-18 15:14:25,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:25,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:14:25,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879075612] [2020-08-18 15:14:25,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:14:25,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:14:25,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:14:25,722 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 4 states. [2020-08-18 15:14:26,171 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:27,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:27,032 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2020-08-18 15:14:27,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:14:27,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 15:14:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:27,042 INFO L225 Difference]: With dead ends: 228 [2020-08-18 15:14:27,042 INFO L226 Difference]: Without dead ends: 147 [2020-08-18 15:14:27,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 15:14:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-18 15:14:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-18 15:14:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 15:14:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-08-18 15:14:27,079 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-08-18 15:14:27,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:27,080 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-08-18 15:14:27,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:14:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-08-18 15:14:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 15:14:27,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:27,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:14:27,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:14:27,083 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:27,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-08-18 15:14:27,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:27,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454722242] [2020-08-18 15:14:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:27,391 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:27,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:27,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:27,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:27,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:14:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:14:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:27,491 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 15:14:27,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454722242] [2020-08-18 15:14:27,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:27,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:14:27,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105938890] [2020-08-18 15:14:27,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:14:27,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:27,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:14:27,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:14:27,495 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 8 states. [2020-08-18 15:14:27,937 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:28,242 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:28,495 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:28,740 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:29,534 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:31,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:31,272 INFO L93 Difference]: Finished difference Result 412 states and 515 transitions. [2020-08-18 15:14:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:14:31,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 15:14:31,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:31,280 INFO L225 Difference]: With dead ends: 412 [2020-08-18 15:14:31,281 INFO L226 Difference]: Without dead ends: 316 [2020-08-18 15:14:31,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:14:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-18 15:14:31,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 258. [2020-08-18 15:14:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-18 15:14:31,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 314 transitions. [2020-08-18 15:14:31,371 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 314 transitions. Word has length 51 [2020-08-18 15:14:31,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:31,371 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 314 transitions. [2020-08-18 15:14:31,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:14:31,372 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 314 transitions. [2020-08-18 15:14:31,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 15:14:31,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:31,373 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] [2020-08-18 15:14:31,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:14:31,374 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:31,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:31,374 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-08-18 15:14:31,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:31,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168970858] [2020-08-18 15:14:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:31,739 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:31,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:31,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:31,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:14:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:14:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:31,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:14:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:31,849 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 15:14:31,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168970858] [2020-08-18 15:14:31,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:31,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:14:31,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628234978] [2020-08-18 15:14:31,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:14:31,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:31,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:14:31,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:14:31,852 INFO L87 Difference]: Start difference. First operand 258 states and 314 transitions. Second operand 8 states. [2020-08-18 15:14:32,337 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:33,179 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:33,548 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:33,861 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:34,166 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:34,583 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:35,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:35,494 INFO L93 Difference]: Finished difference Result 832 states and 1087 transitions. [2020-08-18 15:14:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:14:35,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 15:14:35,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:35,502 INFO L225 Difference]: With dead ends: 832 [2020-08-18 15:14:35,503 INFO L226 Difference]: Without dead ends: 598 [2020-08-18 15:14:35,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:14:35,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-08-18 15:14:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 471. [2020-08-18 15:14:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-08-18 15:14:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 578 transitions. [2020-08-18 15:14:35,626 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 578 transitions. Word has length 57 [2020-08-18 15:14:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:35,626 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 578 transitions. [2020-08-18 15:14:35,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:14:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 578 transitions. [2020-08-18 15:14:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 15:14:35,629 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:35,629 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] [2020-08-18 15:14:35,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:14:35,630 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:35,630 INFO L82 PathProgramCache]: Analyzing trace with hash -690329863, now seen corresponding path program 1 times [2020-08-18 15:14:35,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:35,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240777812] [2020-08-18 15:14:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:35,894 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:35,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:35,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:35,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:14:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:14:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:36,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:14:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:36,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 15:14:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:36,028 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 15:14:36,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240777812] [2020-08-18 15:14:36,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:36,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:14:36,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123017367] [2020-08-18 15:14:36,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:14:36,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:36,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:14:36,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:14:36,031 INFO L87 Difference]: Start difference. First operand 471 states and 578 transitions. Second operand 9 states. [2020-08-18 15:14:36,577 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:37,487 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:37,761 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:38,024 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:38,610 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:38,875 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:39,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:39,834 INFO L93 Difference]: Finished difference Result 1331 states and 1800 transitions. [2020-08-18 15:14:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 15:14:39,839 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 15:14:39,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:39,846 INFO L225 Difference]: With dead ends: 1331 [2020-08-18 15:14:39,847 INFO L226 Difference]: Without dead ends: 884 [2020-08-18 15:14:39,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:14:39,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-08-18 15:14:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 703. [2020-08-18 15:14:39,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-18 15:14:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 871 transitions. [2020-08-18 15:14:39,985 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 871 transitions. Word has length 61 [2020-08-18 15:14:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:39,986 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 871 transitions. [2020-08-18 15:14:39,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:14:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 871 transitions. [2020-08-18 15:14:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 15:14:39,988 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:39,989 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] [2020-08-18 15:14:39,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:14:39,989 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:39,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1573489665, now seen corresponding path program 1 times [2020-08-18 15:14:39,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:39,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143911767] [2020-08-18 15:14:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,243 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:14:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:14:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:14:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:14:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:14:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:14:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 15:14:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 15:14:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:40,403 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 15:14:40,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143911767] [2020-08-18 15:14:40,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:40,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:14:40,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985740637] [2020-08-18 15:14:40,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:14:40,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:40,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:14:40,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:14:40,406 INFO L87 Difference]: Start difference. First operand 703 states and 871 transitions. Second operand 9 states. [2020-08-18 15:14:40,921 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:41,897 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:42,124 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:14:42,391 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:42,629 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:44,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:44,400 INFO L93 Difference]: Finished difference Result 2338 states and 3323 transitions. [2020-08-18 15:14:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:14:44,401 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 15:14:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:44,413 INFO L225 Difference]: With dead ends: 2338 [2020-08-18 15:14:44,413 INFO L226 Difference]: Without dead ends: 1659 [2020-08-18 15:14:44,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:14:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-18 15:14:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1259. [2020-08-18 15:14:44,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-08-18 15:14:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1546 transitions. [2020-08-18 15:14:44,685 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1546 transitions. Word has length 83 [2020-08-18 15:14:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:44,686 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1546 transitions. [2020-08-18 15:14:44,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:14:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1546 transitions. [2020-08-18 15:14:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 15:14:44,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:44,691 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] [2020-08-18 15:14:44,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:14:44,691 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:44,692 INFO L82 PathProgramCache]: Analyzing trace with hash 547997666, now seen corresponding path program 1 times [2020-08-18 15:14:44,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:44,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340058137] [2020-08-18 15:14:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:44,950 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:44,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:44,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:44,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:14:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:14:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:14:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:14:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:14:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:14:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 15:14:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 15:14:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,109 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 15:14:45,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340058137] [2020-08-18 15:14:45,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:45,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:14:45,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456794354] [2020-08-18 15:14:45,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:14:45,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:45,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:14:45,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:14:45,121 INFO L87 Difference]: Start difference. First operand 1259 states and 1546 transitions. Second operand 9 states. [2020-08-18 15:14:46,198 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:46,425 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:14:46,685 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:46,930 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:48,000 INFO L93 Difference]: Finished difference Result 2894 states and 3849 transitions. [2020-08-18 15:14:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:14:48,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 15:14:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:48,014 INFO L225 Difference]: With dead ends: 2894 [2020-08-18 15:14:48,014 INFO L226 Difference]: Without dead ends: 1659 [2020-08-18 15:14:48,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:14:48,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-18 15:14:48,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1299. [2020-08-18 15:14:48,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-18 15:14:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1586 transitions. [2020-08-18 15:14:48,404 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1586 transitions. Word has length 83 [2020-08-18 15:14:48,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:48,405 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1586 transitions. [2020-08-18 15:14:48,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:14:48,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1586 transitions. [2020-08-18 15:14:48,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 15:14:48,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:48,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:48,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:14:48,419 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash 570629920, now seen corresponding path program 1 times [2020-08-18 15:14:48,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:48,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836146433] [2020-08-18 15:14:48,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,753 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:48,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:14:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:14:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:14:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:14:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:14:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:14:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 15:14:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 15:14:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:48,884 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 15:14:48,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836146433] [2020-08-18 15:14:48,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:48,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 15:14:48,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423781719] [2020-08-18 15:14:48,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:14:48,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:48,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:14:48,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:14:48,888 INFO L87 Difference]: Start difference. First operand 1299 states and 1586 transitions. Second operand 11 states. [2020-08-18 15:14:49,458 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:49,714 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:49,928 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:50,613 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:50,905 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:51,145 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:52,302 INFO L93 Difference]: Finished difference Result 2592 states and 3413 transitions. [2020-08-18 15:14:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:14:52,303 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-18 15:14:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:52,314 INFO L225 Difference]: With dead ends: 2592 [2020-08-18 15:14:52,314 INFO L226 Difference]: Without dead ends: 1317 [2020-08-18 15:14:52,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:14:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-18 15:14:52,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1073. [2020-08-18 15:14:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-08-18 15:14:52,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1282 transitions. [2020-08-18 15:14:52,586 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1282 transitions. Word has length 83 [2020-08-18 15:14:52,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:52,587 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1282 transitions. [2020-08-18 15:14:52,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:14:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1282 transitions. [2020-08-18 15:14:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 15:14:52,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:52,591 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, 1, 1, 1, 1] [2020-08-18 15:14:52,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:14:52,591 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:52,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-08-18 15:14:52,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:52,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081667849] [2020-08-18 15:14:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:14:52,661 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:14:52,661 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:14:52,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:14:52,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:14:52 BoogieIcfgContainer [2020-08-18 15:14:52,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:14:52,707 INFO L168 Benchmark]: Toolchain (without parser) took 31757.21 ms. Allocated memory was 136.8 MB in the beginning and 701.0 MB in the end (delta: 564.1 MB). Free memory was 99.1 MB in the beginning and 358.6 MB in the end (delta: -259.5 MB). Peak memory consumption was 304.6 MB. Max. memory is 7.1 GB. [2020-08-18 15:14:52,708 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:14:52,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.47 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 166.0 MB in the end (delta: -67.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:14:52,719 INFO L168 Benchmark]: Boogie Preprocessor took 97.48 ms. Allocated memory is still 200.3 MB. Free memory was 166.0 MB in the beginning and 161.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:14:52,720 INFO L168 Benchmark]: RCFGBuilder took 1162.88 ms. Allocated memory was 200.3 MB in the beginning and 228.1 MB in the end (delta: 27.8 MB). Free memory was 161.7 MB in the beginning and 191.5 MB in the end (delta: -29.9 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. [2020-08-18 15:14:52,720 INFO L168 Benchmark]: TraceAbstraction took 29787.29 ms. Allocated memory was 228.1 MB in the beginning and 701.0 MB in the end (delta: 472.9 MB). Free memory was 191.5 MB in the beginning and 358.6 MB in the end (delta: -167.1 MB). Peak memory consumption was 305.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:14:52,728 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.47 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.9 MB in the beginning and 166.0 MB in the end (delta: -67.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.48 ms. Allocated memory is still 200.3 MB. Free memory was 166.0 MB in the beginning and 161.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1162.88 ms. Allocated memory was 200.3 MB in the beginning and 228.1 MB in the end (delta: 27.8 MB). Free memory was 161.7 MB in the beginning and 191.5 MB in the end (delta: -29.9 MB). Peak memory consumption was 86.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29787.29 ms. Allocated memory was 228.1 MB in the beginning and 701.0 MB in the end (delta: 472.9 MB). Free memory was 191.5 MB in the beginning and 358.6 MB in the end (delta: -167.1 MB). Peak memory consumption was 305.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; [L921] int retValue_acc ; [L922] int tmp ; [L926] FCALL select_helpers() [L927] FCALL select_features() [L928] CALL, EXPR valid_product() [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L928] RET, EXPR valid_product() [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) [L932] FCALL setup() [L933] CALL runTest() [L915] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) [L579] CALL changeMethaneLevel() [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 [L579] RET changeMethaneLevel() [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L602] CALL timeShift() [L624] COND FALSE !(\read(pumpRunning)) [L631] COND TRUE \read(systemActive) [L633] CALL processEnvironment() [L679] int tmp ; [L682] COND FALSE !(\read(pumpRunning)) [L697] CALL processEnvironment__wrappee__highWaterSensor() [L653] int tmp ; [L656] COND TRUE ! pumpRunning [L658] CALL, EXPR isHighWaterLevel() [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L782] RET, EXPR isHighWaterSensorDry() [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); [L658] RET, EXPR isHighWaterLevel() [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) [L662] CALL activatePump() [L707] pumpRunning = 1 [L662] RET activatePump() [L697] RET processEnvironment__wrappee__highWaterSensor() [L633] RET processEnvironment() [L639] CALL __utac_acc__Specification1_spec__1() [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L415] RET, EXPR isMethaneLevelCritical() [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) [L419] CALL, EXPR isPumpRunning() [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); [L419] RET, EXPR isPumpRunning() [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) [L423] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 907 SDtfs, 1603 SDslu, 1169 SDs, 0 SdLazy, 5318 SolverSat, 1015 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1299occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 1431 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 147464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...