/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:03:57,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:03:57,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:03:57,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:03:57,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:03:57,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:03:57,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:03:57,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:03:57,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:03:57,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:03:57,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:03:57,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:03:57,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:03:57,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:03:57,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:03:57,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:03:57,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:03:57,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:03:57,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:03:57,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:03:57,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:03:57,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:03:57,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:03:57,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:03:57,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:03:57,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:03:57,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:03:57,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:03:57,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:03:57,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:03:57,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:03:57,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:03:57,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:03:57,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:03:57,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:03:57,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:03:57,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:03:57,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:03:57,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:03:57,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:03:57,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:03:57,868 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 [2019-11-06 22:03:57,883 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:03:57,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:03:57,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:03:57,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:03:57,885 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:03:57,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:03:57,886 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:03:57,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:03:57,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:03:57,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:03:57,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:03:57,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:03:57,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:03:57,887 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:03:57,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:03:57,887 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:03:57,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:03:57,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:03:57,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:03:57,888 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:03:57,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:03:57,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:03:57,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:03:57,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:03:57,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:03:57,889 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:03:57,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:03:57,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:03:57,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:03:58,197 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:03:58,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:03:58,221 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:03:58,223 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:03:58,223 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:03:58,225 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c [2019-11-06 22:03:58,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb8c65c0/dd25c05b066343af83eb8a325e9b700a/FLAG01d00faef [2019-11-06 22:03:58,861 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:03:58,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product55.cil.c [2019-11-06 22:03:58,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb8c65c0/dd25c05b066343af83eb8a325e9b700a/FLAG01d00faef [2019-11-06 22:03:59,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbb8c65c0/dd25c05b066343af83eb8a325e9b700a [2019-11-06 22:03:59,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:03:59,187 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:03:59,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:03:59,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:03:59,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:03:59,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:59" (1/1) ... [2019-11-06 22:03:59,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ed6805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59, skipping insertion in model container [2019-11-06 22:03:59,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:59" (1/1) ... [2019-11-06 22:03:59,203 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:03:59,259 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:03:59,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:03:59,730 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:03:59,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:03:59,870 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:03:59,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59 WrapperNode [2019-11-06 22:03:59,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:03:59,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:03:59,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:03:59,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:03:59,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59" (1/1) ... [2019-11-06 22:03:59,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59" (1/1) ... [2019-11-06 22:03:59,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59" (1/1) ... [2019-11-06 22:03:59,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59" (1/1) ... [2019-11-06 22:03:59,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59" (1/1) ... [2019-11-06 22:03:59,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59" (1/1) ... [2019-11-06 22:03:59,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59" (1/1) ... [2019-11-06 22:03:59,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:03:59,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:03:59,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:03:59,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:03:59,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59" (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 [2019-11-06 22:04:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:04:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:04:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:04:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:04:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:04:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-06 22:04:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:04:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:04:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:04:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:04:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:04:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:04:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:04:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:04:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 22:04:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:04:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:04:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:04:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:04:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:04:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:04:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:04:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:04:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:04:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:04:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:04:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:04:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:04:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:04:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:04:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:04:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:04:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:04:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:04:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:04:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:04:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:04:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:04:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:04:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:04:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:04:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 22:04:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:04:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:04:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:04:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:04:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:04:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:04:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:04:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:04:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:04:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:04:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-11-06 22:04:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:04:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:04:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:04:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:04:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:04:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:04:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:04:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:04:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:04:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:04:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:04:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:04:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:04:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:04:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:04:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:04:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:04:00,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:04:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:04:00,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:00,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:04:00,028 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:00,028 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:04:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:04:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:04:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:04:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:04:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:04:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:04:01,130 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:04:01,131 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:04:01,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:01 BoogieIcfgContainer [2019-11-06 22:04:01,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:04:01,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:04:01,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:04:01,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:04:01,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:59" (1/3) ... [2019-11-06 22:04:01,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cff473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:01, skipping insertion in model container [2019-11-06 22:04:01,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:59" (2/3) ... [2019-11-06 22:04:01,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cff473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:01, skipping insertion in model container [2019-11-06 22:04:01,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:01" (3/3) ... [2019-11-06 22:04:01,141 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product55.cil.c [2019-11-06 22:04:01,150 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:04:01,159 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:04:01,170 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:04:01,202 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:04:01,202 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:04:01,202 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:04:01,203 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:04:01,203 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:04:01,203 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:04:01,204 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:04:01,204 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:04:01,232 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2019-11-06 22:04:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 22:04:01,241 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:01,242 INFO L410 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] [2019-11-06 22:04:01,244 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:01,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:01,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1116469353, now seen corresponding path program 1 times [2019-11-06 22:04:01,260 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:01,260 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239220201] [2019-11-06 22:04:01,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:01,978 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:02,061 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239220201] [2019-11-06 22:04:02,063 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:02,068 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:04:02,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316078058] [2019-11-06 22:04:02,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:04:02,077 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:02,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:04:02,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:04:02,095 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 3 states. [2019-11-06 22:04:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:03,415 INFO L93 Difference]: Finished difference Result 349 states and 454 transitions. [2019-11-06 22:04:03,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:04:03,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 22:04:03,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:03,438 INFO L225 Difference]: With dead ends: 349 [2019-11-06 22:04:03,438 INFO L226 Difference]: Without dead ends: 188 [2019-11-06 22:04:03,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:04:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2019-11-06 22:04:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 152. [2019-11-06 22:04:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-06 22:04:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2019-11-06 22:04:03,567 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 46 [2019-11-06 22:04:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:03,568 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2019-11-06 22:04:03,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:04:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2019-11-06 22:04:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:04:03,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:03,571 INFO L410 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] [2019-11-06 22:04:03,572 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:03,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:03,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1310027705, now seen corresponding path program 1 times [2019-11-06 22:04:03,573 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:03,573 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114021535] [2019-11-06 22:04:03,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:03,944 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:03,979 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114021535] [2019-11-06 22:04:03,979 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:03,979 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:04:03,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821743030] [2019-11-06 22:04:03,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:04:03,981 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:03,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:04:03,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:04:03,982 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 4 states. [2019-11-06 22:04:04,496 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:05,599 INFO L93 Difference]: Finished difference Result 276 states and 337 transitions. [2019-11-06 22:04:05,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:04:05,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 22:04:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:05,603 INFO L225 Difference]: With dead ends: 276 [2019-11-06 22:04:05,604 INFO L226 Difference]: Without dead ends: 172 [2019-11-06 22:04:05,605 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:04:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-11-06 22:04:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 143. [2019-11-06 22:04:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-11-06 22:04:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2019-11-06 22:04:05,643 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 47 [2019-11-06 22:04:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:05,643 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2019-11-06 22:04:05,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:04:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2019-11-06 22:04:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 22:04:05,646 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:05,646 INFO L410 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] [2019-11-06 22:04:05,646 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:05,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2059448103, now seen corresponding path program 1 times [2019-11-06 22:04:05,647 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:05,647 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180981435] [2019-11-06 22:04:05,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:05,982 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:06,102 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180981435] [2019-11-06 22:04:06,102 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:06,103 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:04:06,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644944329] [2019-11-06 22:04:06,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:04:06,104 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:06,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:04:06,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:04:06,105 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 8 states. [2019-11-06 22:04:06,589 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:06,972 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:07,262 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:07,529 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:08,382 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:10,794 INFO L93 Difference]: Finished difference Result 485 states and 602 transitions. [2019-11-06 22:04:10,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:04:10,794 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-11-06 22:04:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:10,799 INFO L225 Difference]: With dead ends: 485 [2019-11-06 22:04:10,800 INFO L226 Difference]: Without dead ends: 366 [2019-11-06 22:04:10,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:04:10,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-11-06 22:04:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 304. [2019-11-06 22:04:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2019-11-06 22:04:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 368 transitions. [2019-11-06 22:04:10,888 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 368 transitions. Word has length 51 [2019-11-06 22:04:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:10,888 INFO L462 AbstractCegarLoop]: Abstraction has 304 states and 368 transitions. [2019-11-06 22:04:10,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:04:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 368 transitions. [2019-11-06 22:04:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:04:10,891 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:10,892 INFO L410 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] [2019-11-06 22:04:10,892 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:10,892 INFO L82 PathProgramCache]: Analyzing trace with hash -535477179, now seen corresponding path program 1 times [2019-11-06 22:04:10,893 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:10,893 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529182936] [2019-11-06 22:04:10,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,235 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:11,343 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529182936] [2019-11-06 22:04:11,343 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:11,343 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:04:11,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092200401] [2019-11-06 22:04:11,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:04:11,344 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:11,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:04:11,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:04:11,345 INFO L87 Difference]: Start difference. First operand 304 states and 368 transitions. Second operand 12 states. [2019-11-06 22:04:12,043 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:12,454 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:12,747 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:13,046 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:13,653 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:14,624 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:15,098 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:15,490 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:15,801 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:16,127 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:16,548 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:17,001 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:17,501 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:19,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:19,847 INFO L93 Difference]: Finished difference Result 1237 states and 1698 transitions. [2019-11-06 22:04:19,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 22:04:19,848 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-11-06 22:04:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:19,857 INFO L225 Difference]: With dead ends: 1237 [2019-11-06 22:04:19,857 INFO L226 Difference]: Without dead ends: 957 [2019-11-06 22:04:19,859 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-11-06 22:04:19,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2019-11-06 22:04:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 860. [2019-11-06 22:04:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2019-11-06 22:04:20,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1102 transitions. [2019-11-06 22:04:20,074 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1102 transitions. Word has length 57 [2019-11-06 22:04:20,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:20,075 INFO L462 AbstractCegarLoop]: Abstraction has 860 states and 1102 transitions. [2019-11-06 22:04:20,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:04:20,075 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1102 transitions. [2019-11-06 22:04:20,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-06 22:04:20,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:20,079 INFO L410 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] [2019-11-06 22:04:20,080 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:20,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:20,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1450049621, now seen corresponding path program 1 times [2019-11-06 22:04:20,080 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:20,081 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066075964] [2019-11-06 22:04:20,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,334 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:20,401 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066075964] [2019-11-06 22:04:20,401 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:20,401 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:04:20,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888290940] [2019-11-06 22:04:20,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:04:20,402 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:20,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:04:20,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:04:20,403 INFO L87 Difference]: Start difference. First operand 860 states and 1102 transitions. Second operand 6 states. [2019-11-06 22:04:20,896 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:22,768 INFO L93 Difference]: Finished difference Result 2013 states and 2775 transitions. [2019-11-06 22:04:22,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:04:22,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-11-06 22:04:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:22,779 INFO L225 Difference]: With dead ends: 2013 [2019-11-06 22:04:22,779 INFO L226 Difference]: Without dead ends: 1177 [2019-11-06 22:04:22,783 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:04:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2019-11-06 22:04:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1090. [2019-11-06 22:04:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2019-11-06 22:04:22,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1378 transitions. [2019-11-06 22:04:22,992 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1378 transitions. Word has length 61 [2019-11-06 22:04:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:22,992 INFO L462 AbstractCegarLoop]: Abstraction has 1090 states and 1378 transitions. [2019-11-06 22:04:22,993 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:04:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1378 transitions. [2019-11-06 22:04:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 22:04:22,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:22,996 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 22:04:22,996 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:22,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash 2144996460, now seen corresponding path program 1 times [2019-11-06 22:04:22,997 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:22,997 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791784116] [2019-11-06 22:04:22,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,295 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-06 22:04:23,405 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791784116] [2019-11-06 22:04:23,405 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007080199] [2019-11-06 22:04:23,405 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 [2019-11-06 22:04:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:23,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-06 22:04:23,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:04:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:04:23,781 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:04:23,781 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-11-06 22:04:23,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192594642] [2019-11-06 22:04:23,782 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-06 22:04:23,782 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:23,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-06 22:04:23,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:04:23,783 INFO L87 Difference]: Start difference. First operand 1090 states and 1378 transitions. Second operand 15 states. [2019-11-06 22:04:24,336 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:25,066 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:25,858 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:27,133 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:27,507 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:29,059 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:29,375 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:30,021 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:31,151 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:31,599 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:31,918 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:32,230 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:32,659 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:33,028 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:33,676 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:34,102 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:34,363 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:34,768 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:04:35,239 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:35,789 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:36,088 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:36,395 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:37,081 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:37,408 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:37,669 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:38,120 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:38,426 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189