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_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:39:01,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:39:01,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:39:01,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:39:01,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:39:01,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:39:01,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:39:01,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:39:01,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:39:01,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:39:01,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:39:01,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:39:01,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:39:01,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:39:01,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:39:01,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:39:01,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:39:01,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:39:01,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:39:01,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:39:01,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:39:01,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:39:01,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:39:01,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:39:01,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:39:01,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:39:01,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:39:01,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:39:01,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:39:01,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:39:01,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:39:01,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:39:01,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:39:01,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:39:01,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:39:01,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:39:01,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:39:01,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:39:01,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:39:01,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:39:01,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:39:01,914 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 23:39:01,935 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:39:01,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:39:01,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:39:01,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:39:01,940 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:39:01,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:39:01,940 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:39:01,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:39:01,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:39:01,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:39:01,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:39:01,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:39:01,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:39:01,943 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:39:01,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:39:01,943 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:39:01,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:39:01,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:39:01,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:39:01,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:39:01,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:39:01,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:39:01,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:39:01,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:39:01,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:39:01,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:39:01,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:39:01,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:39:01,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:39:02,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:39:02,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:39:02,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:39:02,303 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:39:02,303 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:39:02,304 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product60.cil.c [2019-10-14 23:39:02,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082fcd1cc/94b8a37592354f6aaad4050f75d9b029/FLAG4aea48eab [2019-10-14 23:39:02,967 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:39:02,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product60.cil.c [2019-10-14 23:39:02,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082fcd1cc/94b8a37592354f6aaad4050f75d9b029/FLAG4aea48eab [2019-10-14 23:39:03,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/082fcd1cc/94b8a37592354f6aaad4050f75d9b029 [2019-10-14 23:39:03,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:39:03,222 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:39:03,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:03,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:39:03,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:39:03,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:03" (1/1) ... [2019-10-14 23:39:03,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd4125b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03, skipping insertion in model container [2019-10-14 23:39:03,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:03" (1/1) ... [2019-10-14 23:39:03,238 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:39:03,306 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:39:03,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:03,804 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:39:03,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:03,958 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:39:03,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03 WrapperNode [2019-10-14 23:39:03,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:03,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:39:03,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:39:03,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:39:03,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03" (1/1) ... [2019-10-14 23:39:03,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03" (1/1) ... [2019-10-14 23:39:03,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03" (1/1) ... [2019-10-14 23:39:03,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03" (1/1) ... [2019-10-14 23:39:04,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03" (1/1) ... [2019-10-14 23:39:04,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03" (1/1) ... [2019-10-14 23:39:04,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03" (1/1) ... [2019-10-14 23:39:04,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:39:04,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:39:04,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:39:04,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:39:04,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03" (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 23:39:04,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:39:04,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:39:04,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:04,121 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:39:04,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:39:04,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:39:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:39:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:39:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:39:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:39:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:39:04,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:39:04,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:04,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:04,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:04,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:39:04,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:39:04,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:39:04,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:39:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:39:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:39:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:39:04,129 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:39:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:39:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:39:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:39:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:39:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:39:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:39:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:39:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:39:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:39:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:39:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:39:04,132 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:39:04,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:39:04,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:39:04,132 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:39:04,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:39:04,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:39:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:39:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:39:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:39:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:39:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:39:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:39:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:39:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:39:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:39:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:39:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:39:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:39:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:39:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:39:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:39:04,135 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:39:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:39:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:39:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:39:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:39:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:39:04,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:39:04,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:39:04,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:39:04,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:04,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:39:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:39:04,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:39:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:39:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:39:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:39:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:39:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:39:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:39:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:39:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:39:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:39:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:39:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:39:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:39:04,150 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:39:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:39:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:39:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:39:05,418 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:39:05,418 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:39:05,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:05 BoogieIcfgContainer [2019-10-14 23:39:05,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:39:05,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:39:05,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:39:05,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:39:05,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:39:03" (1/3) ... [2019-10-14 23:39:05,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499620ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:05, skipping insertion in model container [2019-10-14 23:39:05,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:03" (2/3) ... [2019-10-14 23:39:05,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@499620ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:05, skipping insertion in model container [2019-10-14 23:39:05,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:05" (3/3) ... [2019-10-14 23:39:05,431 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product60.cil.c [2019-10-14 23:39:05,441 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:39:05,451 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:39:05,463 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:39:05,498 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:39:05,499 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:39:05,499 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:39:05,499 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:39:05,500 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:39:05,500 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:39:05,500 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:39:05,500 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:39:05,527 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-10-14 23:39:05,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:39:05,537 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:05,538 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] [2019-10-14 23:39:05,540 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:05,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2134554421, now seen corresponding path program 1 times [2019-10-14 23:39:05,555 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:05,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317904602] [2019-10-14 23:39:05,556 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:05,556 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:05,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,254 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:06,357 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 23:39:06,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317904602] [2019-10-14 23:39:06,361 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:06,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:39:06,361 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193845926] [2019-10-14 23:39:06,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:39:06,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:06,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:39:06,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:39:06,384 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2019-10-14 23:39:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:07,753 INFO L93 Difference]: Finished difference Result 352 states and 451 transitions. [2019-10-14 23:39:07,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:39:07,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:39:07,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:07,772 INFO L225 Difference]: With dead ends: 352 [2019-10-14 23:39:07,772 INFO L226 Difference]: Without dead ends: 190 [2019-10-14 23:39:07,780 INFO L600 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 [2019-10-14 23:39:07,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2019-10-14 23:39:07,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2019-10-14 23:39:07,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-10-14 23:39:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2019-10-14 23:39:07,879 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 46 [2019-10-14 23:39:07,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:07,880 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2019-10-14 23:39:07,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:39:07,880 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2019-10-14 23:39:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:39:07,884 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:07,884 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] [2019-10-14 23:39:07,884 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:07,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1258335028, now seen corresponding path program 1 times [2019-10-14 23:39:07,885 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:07,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819862912] [2019-10-14 23:39:07,886 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:07,886 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:07,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,234 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:08,267 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 23:39:08,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819862912] [2019-10-14 23:39:08,268 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:08,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:39:08,269 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645946073] [2019-10-14 23:39:08,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:39:08,271 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:08,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:39:08,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:39:08,273 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand 4 states. [2019-10-14 23:39:08,743 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:09,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:09,725 INFO L93 Difference]: Finished difference Result 275 states and 330 transitions. [2019-10-14 23:39:09,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:09,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:39:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:09,728 INFO L225 Difference]: With dead ends: 275 [2019-10-14 23:39:09,729 INFO L226 Difference]: Without dead ends: 174 [2019-10-14 23:39:09,730 INFO L600 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 [2019-10-14 23:39:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-14 23:39:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 144. [2019-10-14 23:39:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-14 23:39:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 166 transitions. [2019-10-14 23:39:09,799 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 166 transitions. Word has length 47 [2019-10-14 23:39:09,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:09,800 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 166 transitions. [2019-10-14 23:39:09,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:39:09,800 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 166 transitions. [2019-10-14 23:39:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:39:09,803 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:09,804 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 23:39:09,804 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash 598975815, now seen corresponding path program 1 times [2019-10-14 23:39:09,808 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:09,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589884189] [2019-10-14 23:39:09,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:09,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:09,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,214 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:10,362 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 23:39:10,362 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589884189] [2019-10-14 23:39:10,363 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:10,363 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:39:10,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592576623] [2019-10-14 23:39:10,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:10,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:10,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:10,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:39:10,365 INFO L87 Difference]: Start difference. First operand 144 states and 166 transitions. Second operand 8 states. [2019-10-14 23:39:10,775 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:11,162 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:11,441 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:11,696 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:12,537 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:14,738 INFO L93 Difference]: Finished difference Result 491 states and 599 transitions. [2019-10-14 23:39:14,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:39:14,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-14 23:39:14,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:14,744 INFO L225 Difference]: With dead ends: 491 [2019-10-14 23:39:14,744 INFO L226 Difference]: Without dead ends: 371 [2019-10-14 23:39:14,746 INFO L600 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 [2019-10-14 23:39:14,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-10-14 23:39:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 302. [2019-10-14 23:39:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2019-10-14 23:39:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 360 transitions. [2019-10-14 23:39:14,853 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 360 transitions. Word has length 52 [2019-10-14 23:39:14,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:14,855 INFO L462 AbstractCegarLoop]: Abstraction has 302 states and 360 transitions. [2019-10-14 23:39:14,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 360 transitions. [2019-10-14 23:39:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:39:14,860 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:14,861 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] [2019-10-14 23:39:14,865 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:14,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:14,865 INFO L82 PathProgramCache]: Analyzing trace with hash 301540465, now seen corresponding path program 1 times [2019-10-14 23:39:14,866 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:14,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538943992] [2019-10-14 23:39:14,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:14,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:14,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,249 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:15,353 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 23:39:15,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538943992] [2019-10-14 23:39:15,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:15,354 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:39:15,354 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726356375] [2019-10-14 23:39:15,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:39:15,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:15,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:39:15,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:15,355 INFO L87 Difference]: Start difference. First operand 302 states and 360 transitions. Second operand 12 states. [2019-10-14 23:39:15,805 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:16,146 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:16,442 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:16,753 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:17,361 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:18,346 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:18,799 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:19,112 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:19,404 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:19,773 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:20,183 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:20,572 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:20,986 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:23,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:23,235 INFO L93 Difference]: Finished difference Result 1233 states and 1656 transitions. [2019-10-14 23:39:23,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:23,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-14 23:39:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:23,245 INFO L225 Difference]: With dead ends: 1233 [2019-10-14 23:39:23,245 INFO L226 Difference]: Without dead ends: 955 [2019-10-14 23:39:23,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2019-10-14 23:39:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 854. [2019-10-14 23:39:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2019-10-14 23:39:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1066 transitions. [2019-10-14 23:39:23,473 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1066 transitions. Word has length 57 [2019-10-14 23:39:23,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:23,474 INFO L462 AbstractCegarLoop]: Abstraction has 854 states and 1066 transitions. [2019-10-14 23:39:23,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1066 transitions. [2019-10-14 23:39:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 23:39:23,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:23,478 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] [2019-10-14 23:39:23,479 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:23,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1216503305, now seen corresponding path program 1 times [2019-10-14 23:39:23,479 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:23,479 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816114711] [2019-10-14 23:39:23,479 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:23,480 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:23,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,740 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:23,809 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 23:39:23,809 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816114711] [2019-10-14 23:39:23,810 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:23,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:39:23,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019187367] [2019-10-14 23:39:23,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:23,811 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:23,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:23,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:39:23,811 INFO L87 Difference]: Start difference. First operand 854 states and 1066 transitions. Second operand 6 states. [2019-10-14 23:39:24,185 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:26,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:26,243 INFO L93 Difference]: Finished difference Result 2019 states and 2693 transitions. [2019-10-14 23:39:26,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:39:26,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-14 23:39:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:26,255 INFO L225 Difference]: With dead ends: 2019 [2019-10-14 23:39:26,256 INFO L226 Difference]: Without dead ends: 1189 [2019-10-14 23:39:26,259 INFO L600 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 [2019-10-14 23:39:26,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-10-14 23:39:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1098. [2019-10-14 23:39:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2019-10-14 23:39:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1364 transitions. [2019-10-14 23:39:26,497 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1364 transitions. Word has length 61 [2019-10-14 23:39:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:26,498 INFO L462 AbstractCegarLoop]: Abstraction has 1098 states and 1364 transitions. [2019-10-14 23:39:26,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1364 transitions. [2019-10-14 23:39:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:39:26,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:26,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:26,503 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:26,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1663970326, now seen corresponding path program 1 times [2019-10-14 23:39:26,503 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:26,504 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543887936] [2019-10-14 23:39:26,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:26,504 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:26,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,855 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-14 23:39:26,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543887936] [2019-10-14 23:39:26,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572827414] [2019-10-14 23:39:26,992 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 23:39:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:39:27,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:39:27,386 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:27,386 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-14 23:39:27,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017902974] [2019-10-14 23:39:27,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 23:39:27,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:27,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 23:39:27,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:27,389 INFO L87 Difference]: Start difference. First operand 1098 states and 1364 transitions. Second operand 15 states. [2019-10-14 23:39:27,931 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:28,768 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:29,609 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:31,321 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:31,839 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:33,486 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:33,771 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:34,267 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:35,447 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:35,785 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:36,074 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:36,406 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:36,742 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:37,107 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:37,441 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:37,752 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:38,042 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:38,516 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:39,209 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:39,900 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:40,210 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:40,519 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:41,095 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:41,452 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:41,739 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:42,031 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:42,386 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189