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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:35:37,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:35:37,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:35:37,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:35:37,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:35:37,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:35:37,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:35:37,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:35:37,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:35:37,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:35:37,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:35:37,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:35:37,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:35:37,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:35:37,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:35:37,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:35:37,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:35:37,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:35:37,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:35:37,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:35:37,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:35:37,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:35:37,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:35:37,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:35:37,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:35:37,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:35:37,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:35:37,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:35:37,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:35:37,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:35:37,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:35:37,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:35:37,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:35:37,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:35:37,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:35:37,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:35:37,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:35:37,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:35:37,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:35:37,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:35:37,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:35:37,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:35:37,657 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:35:37,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:35:37,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:35:37,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:35:37,659 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:35:37,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:35:37,659 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:35:37,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:35:37,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:35:37,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:35:37,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:35:37,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:35:37,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:35:37,661 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:35:37,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:35:37,661 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:35:37,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:35:37,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:35:37,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:35:37,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:35:37,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:35:37,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:35:37,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:35:37,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:35:37,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:35:37,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:35:37,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:35:37,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:35:37,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:35:37,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:35:37,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:35:37,986 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:35:37,987 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:35:37,988 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:35:37,988 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-10-14 23:35:38,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/570110d15/da19828999e44e1983cd676502e48951/FLAGae9b8373c [2019-10-14 23:35:38,652 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:35:38,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product49.cil.c [2019-10-14 23:35:38,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/570110d15/da19828999e44e1983cd676502e48951/FLAGae9b8373c [2019-10-14 23:35:38,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/570110d15/da19828999e44e1983cd676502e48951 [2019-10-14 23:35:38,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:35:38,942 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:35:38,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:38,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:35:38,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:35:38,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:38" (1/1) ... [2019-10-14 23:35:38,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a4791f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:38, skipping insertion in model container [2019-10-14 23:35:38,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:38" (1/1) ... [2019-10-14 23:35:38,959 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:35:39,015 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:35:39,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:39,500 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:35:39,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:39,674 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:35:39,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39 WrapperNode [2019-10-14 23:35:39,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:39,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:35:39,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:35:39,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:35:39,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... [2019-10-14 23:35:39,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:35:39,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:35:39,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:35:39,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:35:39,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:35:39,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:35:39,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:35:39,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:39,856 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:35:39,856 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:35:39,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:35:39,858 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:35:39,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:35:39,859 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:35:39,859 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:35:39,859 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:35:39,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:35:39,860 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:35:39,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:35:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:35:39,862 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:35:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:39,865 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:35:39,866 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:35:39,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:35:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:35:39,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:35:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:35:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:35:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:35:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:35:39,869 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:35:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:35:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:35:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:35:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:35:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:35:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:35:39,873 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:35:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:35:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:35:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:35:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:35:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:35:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:35:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:35:39,876 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:35:39,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:35:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:35:39,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:35:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:35:39,879 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:39,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:35:39,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:35:39,881 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:35:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:35:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:35:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:35:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:35:39,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:35:40,978 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:35:40,978 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:35:40,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:40 BoogieIcfgContainer [2019-10-14 23:35:40,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:35:40,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:35:40,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:35:40,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:35:40,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:35:38" (1/3) ... [2019-10-14 23:35:40,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4421baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:40, skipping insertion in model container [2019-10-14 23:35:40,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:39" (2/3) ... [2019-10-14 23:35:40,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4421baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:40, skipping insertion in model container [2019-10-14 23:35:40,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:40" (3/3) ... [2019-10-14 23:35:40,988 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product49.cil.c [2019-10-14 23:35:40,998 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:35:41,006 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:35:41,017 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:35:41,043 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:35:41,043 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:35:41,043 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:35:41,043 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:35:41,044 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:35:41,044 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:35:41,044 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:35:41,044 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:35:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2019-10-14 23:35:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:35:41,077 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:41,078 INFO L380 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] [2019-10-14 23:35:41,080 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:41,086 INFO L82 PathProgramCache]: Analyzing trace with hash -154299971, now seen corresponding path program 1 times [2019-10-14 23:35:41,095 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:41,095 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136440544] [2019-10-14 23:35:41,096 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:41,096 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:41,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,755 WARN L191 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:41,868 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136440544] [2019-10-14 23:35:41,869 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:41,869 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:35:41,869 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623983127] [2019-10-14 23:35:41,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:35:41,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:41,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:35:41,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:41,892 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2019-10-14 23:35:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:43,081 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2019-10-14 23:35:43,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:35:43,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:35:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:43,102 INFO L225 Difference]: With dead ends: 296 [2019-10-14 23:35:43,103 INFO L226 Difference]: Without dead ends: 164 [2019-10-14 23:35:43,110 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-14 23:35:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 133. [2019-10-14 23:35:43,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-10-14 23:35:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2019-10-14 23:35:43,205 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 51 [2019-10-14 23:35:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:43,206 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2019-10-14 23:35:43,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:35:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2019-10-14 23:35:43,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:35:43,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:43,210 INFO L380 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] [2019-10-14 23:35:43,210 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:43,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:43,211 INFO L82 PathProgramCache]: Analyzing trace with hash 401693438, now seen corresponding path program 1 times [2019-10-14 23:35:43,211 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:43,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941740458] [2019-10-14 23:35:43,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:43,212 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:43,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,564 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:43,631 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941740458] [2019-10-14 23:35:43,631 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:43,631 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:35:43,631 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878757652] [2019-10-14 23:35:43,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:35:43,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:43,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:35:43,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:35:43,634 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 5 states. [2019-10-14 23:35:44,132 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:44,956 INFO L93 Difference]: Finished difference Result 241 states and 296 transitions. [2019-10-14 23:35:44,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:35:44,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:35:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:44,959 INFO L225 Difference]: With dead ends: 241 [2019-10-14 23:35:44,960 INFO L226 Difference]: Without dead ends: 154 [2019-10-14 23:35:44,964 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:35:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-14 23:35:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2019-10-14 23:35:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-14 23:35:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2019-10-14 23:35:45,019 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 52 [2019-10-14 23:35:45,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:45,020 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2019-10-14 23:35:45,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:35:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2019-10-14 23:35:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:35:45,026 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:45,027 INFO L380 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] [2019-10-14 23:35:45,027 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:45,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:45,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1332267464, now seen corresponding path program 1 times [2019-10-14 23:35:45,028 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:45,028 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854872781] [2019-10-14 23:35:45,028 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:45,028 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:45,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,448 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:45,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854872781] [2019-10-14 23:35:45,604 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:45,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:45,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430484001] [2019-10-14 23:35:45,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:45,605 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:45,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:45,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:45,606 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 9 states. [2019-10-14 23:35:46,101 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:46,457 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:35:46,741 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:47,034 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:48,303 INFO L93 Difference]: Finished difference Result 250 states and 311 transitions. [2019-10-14 23:35:48,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:35:48,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-10-14 23:35:48,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:48,308 INFO L225 Difference]: With dead ends: 250 [2019-10-14 23:35:48,308 INFO L226 Difference]: Without dead ends: 154 [2019-10-14 23:35:48,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:35:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-14 23:35:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2019-10-14 23:35:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-14 23:35:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2019-10-14 23:35:48,341 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 56 [2019-10-14 23:35:48,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:48,342 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2019-10-14 23:35:48,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2019-10-14 23:35:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-14 23:35:48,345 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:48,346 INFO L380 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] [2019-10-14 23:35:48,346 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:48,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:48,346 INFO L82 PathProgramCache]: Analyzing trace with hash -877153324, now seen corresponding path program 1 times [2019-10-14 23:35:48,346 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:48,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194277967] [2019-10-14 23:35:48,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:48,347 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:48,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,638 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:48,734 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194277967] [2019-10-14 23:35:48,734 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:48,734 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:35:48,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520018944] [2019-10-14 23:35:48,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:35:48,735 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:48,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:35:48,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:35:48,736 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 7 states. [2019-10-14 23:35:49,099 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:50,330 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:51,022 INFO L93 Difference]: Finished difference Result 344 states and 433 transitions. [2019-10-14 23:35:51,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:35:51,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2019-10-14 23:35:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:51,027 INFO L225 Difference]: With dead ends: 344 [2019-10-14 23:35:51,027 INFO L226 Difference]: Without dead ends: 248 [2019-10-14 23:35:51,029 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:35:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2019-10-14 23:35:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 202. [2019-10-14 23:35:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-10-14 23:35:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2019-10-14 23:35:51,074 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 69 [2019-10-14 23:35:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:51,075 INFO L462 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2019-10-14 23:35:51,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:35:51,075 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2019-10-14 23:35:51,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-14 23:35:51,077 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:51,077 INFO L380 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] [2019-10-14 23:35:51,077 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:51,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1061705923, now seen corresponding path program 1 times [2019-10-14 23:35:51,078 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:51,078 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316601097] [2019-10-14 23:35:51,078 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:51,078 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:51,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,418 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:51,542 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316601097] [2019-10-14 23:35:51,543 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:51,543 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:51,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841951853] [2019-10-14 23:35:51,544 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:51,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:51,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:51,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:51,545 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 9 states. [2019-10-14 23:35:51,995 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:53,307 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:53,615 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:53,915 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:54,163 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:55,212 INFO L93 Difference]: Finished difference Result 597 states and 752 transitions. [2019-10-14 23:35:55,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:35:55,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-10-14 23:35:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:55,220 INFO L225 Difference]: With dead ends: 597 [2019-10-14 23:35:55,220 INFO L226 Difference]: Without dead ends: 423 [2019-10-14 23:35:55,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:35:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2019-10-14 23:35:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 352. [2019-10-14 23:35:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2019-10-14 23:35:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 404 transitions. [2019-10-14 23:35:55,303 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 404 transitions. Word has length 83 [2019-10-14 23:35:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:55,304 INFO L462 AbstractCegarLoop]: Abstraction has 352 states and 404 transitions. [2019-10-14 23:35:55,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 404 transitions. [2019-10-14 23:35:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-14 23:35:55,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:55,307 INFO L380 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] [2019-10-14 23:35:55,307 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:55,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:55,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1506381919, now seen corresponding path program 1 times [2019-10-14 23:35:55,308 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:55,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122331929] [2019-10-14 23:35:55,309 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:55,309 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:55,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,699 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:55,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122331929] [2019-10-14 23:35:55,848 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:55,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:55,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940191302] [2019-10-14 23:35:55,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:55,850 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:55,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:55,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:55,850 INFO L87 Difference]: Start difference. First operand 352 states and 404 transitions. Second operand 10 states. [2019-10-14 23:35:56,290 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:57,534 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:57,776 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:58,054 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:58,352 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:59,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:59,588 INFO L93 Difference]: Finished difference Result 782 states and 967 transitions. [2019-10-14 23:35:59,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:35:59,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2019-10-14 23:35:59,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:59,592 INFO L225 Difference]: With dead ends: 782 [2019-10-14 23:35:59,592 INFO L226 Difference]: Without dead ends: 458 [2019-10-14 23:35:59,593 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:35:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2019-10-14 23:35:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 351. [2019-10-14 23:35:59,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2019-10-14 23:35:59,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2019-10-14 23:35:59,669 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 87 [2019-10-14 23:35:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:59,669 INFO L462 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2019-10-14 23:35:59,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:35:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2019-10-14 23:35:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:35:59,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:59,671 INFO L380 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, 1] [2019-10-14 23:35:59,671 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:59,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1049604760, now seen corresponding path program 1 times [2019-10-14 23:35:59,672 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:59,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687126404] [2019-10-14 23:35:59,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:59,672 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:59,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:59,939 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:00,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687126404] [2019-10-14 23:36:00,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:00,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:00,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100637702] [2019-10-14 23:36:00,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:00,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:00,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:00,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:00,076 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 10 states. [2019-10-14 23:36:01,132 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:01,434 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:01,714 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:01,993 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:02,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:02,978 INFO L93 Difference]: Finished difference Result 785 states and 976 transitions. [2019-10-14 23:36:02,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:02,979 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-14 23:36:02,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:02,983 INFO L225 Difference]: With dead ends: 785 [2019-10-14 23:36:02,984 INFO L226 Difference]: Without dead ends: 462 [2019-10-14 23:36:02,986 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:36:02,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-10-14 23:36:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 361. [2019-10-14 23:36:03,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2019-10-14 23:36:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 411 transitions. [2019-10-14 23:36:03,077 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 411 transitions. Word has length 88 [2019-10-14 23:36:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:03,078 INFO L462 AbstractCegarLoop]: Abstraction has 361 states and 411 transitions. [2019-10-14 23:36:03,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 411 transitions. [2019-10-14 23:36:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:36:03,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:03,083 INFO L380 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, 1] [2019-10-14 23:36:03,083 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:03,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:03,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1751204634, now seen corresponding path program 1 times [2019-10-14 23:36:03,084 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:03,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297311031] [2019-10-14 23:36:03,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:03,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:03,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,418 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:03,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297311031] [2019-10-14 23:36:03,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:03,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:03,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113880925] [2019-10-14 23:36:03,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:03,560 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:03,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:03,561 INFO L87 Difference]: Start difference. First operand 361 states and 411 transitions. Second operand 12 states. [2019-10-14 23:36:04,338 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:04,608 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:04,881 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:05,627 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:05,910 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:06,173 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:07,457 INFO L93 Difference]: Finished difference Result 809 states and 1018 transitions. [2019-10-14 23:36:07,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:07,458 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-14 23:36:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:07,463 INFO L225 Difference]: With dead ends: 809 [2019-10-14 23:36:07,463 INFO L226 Difference]: Without dead ends: 476 [2019-10-14 23:36:07,466 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:36:07,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2019-10-14 23:36:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 369. [2019-10-14 23:36:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2019-10-14 23:36:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 419 transitions. [2019-10-14 23:36:07,592 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 419 transitions. Word has length 88 [2019-10-14 23:36:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:07,593 INFO L462 AbstractCegarLoop]: Abstraction has 369 states and 419 transitions. [2019-10-14 23:36:07,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 419 transitions. [2019-10-14 23:36:07,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:36:07,599 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:07,599 INFO L380 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, 1] [2019-10-14 23:36:07,599 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:07,600 INFO L82 PathProgramCache]: Analyzing trace with hash -818281765, now seen corresponding path program 1 times [2019-10-14 23:36:07,602 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:07,602 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191481564] [2019-10-14 23:36:07,602 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:07,603 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:07,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,984 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:08,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191481564] [2019-10-14 23:36:08,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:08,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:08,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853775750] [2019-10-14 23:36:08,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:08,243 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:08,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:08,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:08,244 INFO L87 Difference]: Start difference. First operand 369 states and 419 transitions. Second operand 8 states. [2019-10-14 23:36:08,779 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:09,370 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:11,703 INFO L93 Difference]: Finished difference Result 1128 states and 1469 transitions. [2019-10-14 23:36:11,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:36:11,703 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-14 23:36:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:11,709 INFO L225 Difference]: With dead ends: 1128 [2019-10-14 23:36:11,709 INFO L226 Difference]: Without dead ends: 787 [2019-10-14 23:36:11,711 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:36:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2019-10-14 23:36:11,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 655. [2019-10-14 23:36:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2019-10-14 23:36:11,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 773 transitions. [2019-10-14 23:36:11,832 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 773 transitions. Word has length 88 [2019-10-14 23:36:11,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:11,832 INFO L462 AbstractCegarLoop]: Abstraction has 655 states and 773 transitions. [2019-10-14 23:36:11,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:11,832 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 773 transitions. [2019-10-14 23:36:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-14 23:36:11,834 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:11,834 INFO L380 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, 1, 1, 1, 1, 1] [2019-10-14 23:36:11,835 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:11,835 INFO L82 PathProgramCache]: Analyzing trace with hash -470187979, now seen corresponding path program 1 times [2019-10-14 23:36:11,835 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:11,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204664490] [2019-10-14 23:36:11,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:11,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:11,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,131 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:12,236 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204664490] [2019-10-14 23:36:12,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:12,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:12,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518938868] [2019-10-14 23:36:12,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:12,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:12,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:12,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:12,238 INFO L87 Difference]: Start difference. First operand 655 states and 773 transitions. Second operand 8 states. [2019-10-14 23:36:12,755 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:15,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:15,259 INFO L93 Difference]: Finished difference Result 1292 states and 1674 transitions. [2019-10-14 23:36:15,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:15,260 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-10-14 23:36:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:15,269 INFO L225 Difference]: With dead ends: 1292 [2019-10-14 23:36:15,270 INFO L226 Difference]: Without dead ends: 1289 [2019-10-14 23:36:15,271 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2019-10-14 23:36:15,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2019-10-14 23:36:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1091. [2019-10-14 23:36:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2019-10-14 23:36:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1300 transitions. [2019-10-14 23:36:15,465 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1300 transitions. Word has length 92 [2019-10-14 23:36:15,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:15,466 INFO L462 AbstractCegarLoop]: Abstraction has 1091 states and 1300 transitions. [2019-10-14 23:36:15,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1300 transitions. [2019-10-14 23:36:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-14 23:36:15,470 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:15,470 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:15,471 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:15,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:15,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1507801122, now seen corresponding path program 1 times [2019-10-14 23:36:15,471 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:15,471 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086775784] [2019-10-14 23:36:15,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,884 WARN L191 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-14 23:36:16,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086775784] [2019-10-14 23:36:16,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592846531] [2019-10-14 23:36:16,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:36:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:36:16,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:36:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:16,396 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:36:16,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2019-10-14 23:36:16,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322916339] [2019-10-14 23:36:16,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:36:16,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:16,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:36:16,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:36:16,399 INFO L87 Difference]: Start difference. First operand 1091 states and 1300 transitions. Second operand 3 states.