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_spec1_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:33:53,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:33:53,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:33:53,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:33:53,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:33:53,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:33:53,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:33:53,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:33:53,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:33:53,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:33:53,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:33:53,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:33:53,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:33:53,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:33:53,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:33:53,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:33:53,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:33:53,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:33:53,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:33:53,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:33:53,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:33:53,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:33:53,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:33:53,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:33:53,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:33:53,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:33:53,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:33:53,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:33:53,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:33:53,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:33:53,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:33:53,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:33:53,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:33:53,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:33:53,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:33:53,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:33:53,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:33:53,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:33:53,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:33:53,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:33:53,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:33:53,837 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 23:33:53,859 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:33:53,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:33:53,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:33:53,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:33:53,861 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:33:53,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:33:53,862 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:33:53,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:33:53,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:33:53,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:33:53,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:33:53,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:33:53,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:33:53,865 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:33:53,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:33:53,865 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:33:53,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:33:53,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:33:53,866 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:33:53,866 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:33:53,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:33:53,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:33:53,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:33:53,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:33:53,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:33:53,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:33:53,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:33:53,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:33:53,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:33:54,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:33:54,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:33:54,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:33:54,145 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:33:54,146 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:33:54,147 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-10-14 23:33:54,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac63b662a/76caef3d51f04af0a019ad8b8e643db5/FLAGa17751689 [2019-10-14 23:33:54,761 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:33:54,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-10-14 23:33:54,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac63b662a/76caef3d51f04af0a019ad8b8e643db5/FLAGa17751689 [2019-10-14 23:33:55,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac63b662a/76caef3d51f04af0a019ad8b8e643db5 [2019-10-14 23:33:55,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:33:55,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:33:55,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:33:55,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:33:55,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:33:55,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3471f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55, skipping insertion in model container [2019-10-14 23:33:55,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,095 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:33:55,158 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:33:55,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:33:55,611 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:33:55,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:33:55,746 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:33:55,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55 WrapperNode [2019-10-14 23:33:55,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:33:55,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:33:55,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:33:55,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:33:55,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55" (1/1) ... [2019-10-14 23:33:55,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:33:55,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:33:55,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:33:55,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:33:55,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55" (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 23:33:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:33:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:33:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:33:55,960 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:33:55,961 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:33:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:33:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:33:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:33:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:33:55,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:33:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:33:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:33:55,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:33:55,964 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:33:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:33:55,965 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:33:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:33:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:33:55,968 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:33:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:33:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:33:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:33:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:33:55,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:33:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:33:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:33:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:33:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:33:55,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:33:55,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:33:55,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:33:55,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:33:55,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:33:55,971 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:33:55,971 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:33:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:33:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:33:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:33:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:33:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:33:55,972 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:33:55,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:33:55,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:33:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:33:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:33:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:33:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:33:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:33:55,974 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:33:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:33:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:33:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:33:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:33:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:33:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:33:55,975 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:33:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:33:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:33:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:33:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:33:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:33:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:33:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:33:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:33:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:33:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:33:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:33:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:33:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:33:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:33:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:33:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:33:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:33:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:33:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:33:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:33:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:33:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:33:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:33:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:33:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:33:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:33:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:33:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:33:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:33:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:33:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:33:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:33:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:33:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:33:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:33:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:33:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:33:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:33:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:33:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:33:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:33:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:33:57,169 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:33:57,170 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:33:57,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:33:57 BoogieIcfgContainer [2019-10-14 23:33:57,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:33:57,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:33:57,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:33:57,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:33:57,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:33:55" (1/3) ... [2019-10-14 23:33:57,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bbe587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:33:57, skipping insertion in model container [2019-10-14 23:33:57,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:55" (2/3) ... [2019-10-14 23:33:57,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bbe587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:33:57, skipping insertion in model container [2019-10-14 23:33:57,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:33:57" (3/3) ... [2019-10-14 23:33:57,180 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product59.cil.c [2019-10-14 23:33:57,190 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:33:57,202 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:33:57,214 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:33:57,250 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:33:57,251 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:33:57,251 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:33:57,251 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:33:57,251 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:33:57,251 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:33:57,252 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:33:57,252 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:33:57,280 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-10-14 23:33:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:33:57,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:57,298 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 23:33:57,301 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1514827661, now seen corresponding path program 1 times [2019-10-14 23:33:57,317 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:57,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769157882] [2019-10-14 23:33:57,318 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:57,319 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:57,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,018 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:33:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:58,131 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 23:33:58,131 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769157882] [2019-10-14 23:33:58,132 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:33:58,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:33:58,133 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863194437] [2019-10-14 23:33:58,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:33:58,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:33:58,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:33:58,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:33:58,156 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2019-10-14 23:33:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:33:59,380 INFO L93 Difference]: Finished difference Result 337 states and 437 transitions. [2019-10-14 23:33:59,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:33:59,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:33:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:33:59,409 INFO L225 Difference]: With dead ends: 337 [2019-10-14 23:33:59,409 INFO L226 Difference]: Without dead ends: 182 [2019-10-14 23:33:59,417 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 23:33:59,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-10-14 23:33:59,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2019-10-14 23:33:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-10-14 23:33:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2019-10-14 23:33:59,523 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 46 [2019-10-14 23:33:59,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:33:59,524 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2019-10-14 23:33:59,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:33:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2019-10-14 23:33:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:33:59,527 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:59,528 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 23:33:59,528 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:59,528 INFO L82 PathProgramCache]: Analyzing trace with hash -932487912, now seen corresponding path program 1 times [2019-10-14 23:33:59,529 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:59,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309190898] [2019-10-14 23:33:59,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:59,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:59,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:59,889 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:33:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:59,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:59,925 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 23:33:59,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309190898] [2019-10-14 23:33:59,926 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:33:59,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:33:59,926 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871306079] [2019-10-14 23:33:59,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:33:59,928 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:33:59,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:33:59,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:33:59,929 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 4 states. [2019-10-14 23:34:00,376 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:01,326 INFO L93 Difference]: Finished difference Result 264 states and 320 transitions. [2019-10-14 23:34:01,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:34:01,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:34:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:01,330 INFO L225 Difference]: With dead ends: 264 [2019-10-14 23:34:01,331 INFO L226 Difference]: Without dead ends: 166 [2019-10-14 23:34:01,332 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 23:34:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-10-14 23:34:01,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 137. [2019-10-14 23:34:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-14 23:34:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-10-14 23:34:01,370 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 47 [2019-10-14 23:34:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:01,370 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-10-14 23:34:01,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:34:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-10-14 23:34:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:34:01,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:01,373 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:01,373 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash -896226788, now seen corresponding path program 1 times [2019-10-14 23:34:01,374 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:01,374 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055186850] [2019-10-14 23:34:01,374 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:01,374 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:01,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,774 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,883 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 23:34:01,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055186850] [2019-10-14 23:34:01,884 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:01,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:34:01,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083960911] [2019-10-14 23:34:01,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:01,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:01,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:01,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:34:01,886 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 8 states. [2019-10-14 23:34:02,353 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:02,687 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:02,984 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:03,263 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:04,129 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:06,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:06,309 INFO L93 Difference]: Finished difference Result 467 states and 576 transitions. [2019-10-14 23:34:06,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:34:06,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-14 23:34:06,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:06,317 INFO L225 Difference]: With dead ends: 467 [2019-10-14 23:34:06,317 INFO L226 Difference]: Without dead ends: 354 [2019-10-14 23:34:06,319 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 23:34:06,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-10-14 23:34:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 292. [2019-10-14 23:34:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2019-10-14 23:34:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 352 transitions. [2019-10-14 23:34:06,395 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 352 transitions. Word has length 51 [2019-10-14 23:34:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:06,396 INFO L462 AbstractCegarLoop]: Abstraction has 292 states and 352 transitions. [2019-10-14 23:34:06,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 352 transitions. [2019-10-14 23:34:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:34:06,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:06,400 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 23:34:06,400 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:06,400 INFO L82 PathProgramCache]: Analyzing trace with hash 278011294, now seen corresponding path program 1 times [2019-10-14 23:34:06,401 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:06,401 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644484774] [2019-10-14 23:34:06,401 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:06,401 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:06,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,789 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,871 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 23:34:06,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644484774] [2019-10-14 23:34:06,871 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:06,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:34:06,872 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853687759] [2019-10-14 23:34:06,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:06,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:06,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:06,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:34:06,874 INFO L87 Difference]: Start difference. First operand 292 states and 352 transitions. Second operand 8 states. [2019-10-14 23:34:07,500 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:08,710 WARN L191 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:09,100 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:09,438 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:09,778 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:10,327 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:11,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:11,495 INFO L93 Difference]: Finished difference Result 942 states and 1209 transitions. [2019-10-14 23:34:11,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:11,497 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:34:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:11,503 INFO L225 Difference]: With dead ends: 942 [2019-10-14 23:34:11,504 INFO L226 Difference]: Without dead ends: 674 [2019-10-14 23:34:11,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:34:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-10-14 23:34:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 539. [2019-10-14 23:34:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-14 23:34:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 654 transitions. [2019-10-14 23:34:11,631 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 654 transitions. Word has length 57 [2019-10-14 23:34:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:11,631 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 654 transitions. [2019-10-14 23:34:11,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 654 transitions. [2019-10-14 23:34:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 23:34:11,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:11,635 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 23:34:11,636 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:11,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1238143586, now seen corresponding path program 1 times [2019-10-14 23:34:11,636 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:11,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217358447] [2019-10-14 23:34:11,637 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:11,637 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:11,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,985 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:12,077 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 23:34:12,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217358447] [2019-10-14 23:34:12,078 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:12,078 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:12,078 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721529679] [2019-10-14 23:34:12,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:12,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:12,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:12,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:12,079 INFO L87 Difference]: Start difference. First operand 539 states and 654 transitions. Second operand 9 states. [2019-10-14 23:34:12,622 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:13,632 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:13,956 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:14,233 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:14,948 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:15,272 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:16,410 INFO L93 Difference]: Finished difference Result 1475 states and 1960 transitions. [2019-10-14 23:34:16,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:34:16,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-14 23:34:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:16,423 INFO L225 Difference]: With dead ends: 1475 [2019-10-14 23:34:16,423 INFO L226 Difference]: Without dead ends: 960 [2019-10-14 23:34:16,427 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:34:16,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2019-10-14 23:34:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 779. [2019-10-14 23:34:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2019-10-14 23:34:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 955 transitions. [2019-10-14 23:34:16,611 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 955 transitions. Word has length 61 [2019-10-14 23:34:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:16,612 INFO L462 AbstractCegarLoop]: Abstraction has 779 states and 955 transitions. [2019-10-14 23:34:16,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 955 transitions. [2019-10-14 23:34:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-14 23:34:16,615 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:16,616 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:16,616 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:16,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash 726814707, now seen corresponding path program 1 times [2019-10-14 23:34:16,617 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:16,617 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714198631] [2019-10-14 23:34:16,617 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:16,617 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:16,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,897 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:17,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714198631] [2019-10-14 23:34:17,005 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:17,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:17,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655104870] [2019-10-14 23:34:17,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:17,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:17,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:17,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:17,007 INFO L87 Difference]: Start difference. First operand 779 states and 955 transitions. Second operand 9 states. [2019-10-14 23:34:18,209 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:18,472 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:34:18,762 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:19,038 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:20,243 INFO L93 Difference]: Finished difference Result 1799 states and 2424 transitions. [2019-10-14 23:34:20,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:34:20,243 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-14 23:34:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:20,254 INFO L225 Difference]: With dead ends: 1799 [2019-10-14 23:34:20,255 INFO L226 Difference]: Without dead ends: 1044 [2019-10-14 23:34:20,258 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:34:20,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-10-14 23:34:20,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 805. [2019-10-14 23:34:20,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2019-10-14 23:34:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2019-10-14 23:34:20,470 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 98 [2019-10-14 23:34:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:20,471 INFO L462 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2019-10-14 23:34:20,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2019-10-14 23:34:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-14 23:34:20,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:20,481 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:20,481 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1620301045, now seen corresponding path program 1 times [2019-10-14 23:34:20,482 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:20,482 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913817991] [2019-10-14 23:34:20,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:20,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:20,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,785 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:20,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913817991] [2019-10-14 23:34:20,960 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:20,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:34:20,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421374785] [2019-10-14 23:34:20,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:34:20,961 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:20,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:34:20,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:34:20,963 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand 11 states. [2019-10-14 23:34:21,887 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:22,155 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:22,404 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:23,215 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:23,507 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:23,772 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:25,134 INFO L93 Difference]: Finished difference Result 1845 states and 2472 transitions. [2019-10-14 23:34:25,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:25,135 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2019-10-14 23:34:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:25,143 INFO L225 Difference]: With dead ends: 1845 [2019-10-14 23:34:25,143 INFO L226 Difference]: Without dead ends: 1064 [2019-10-14 23:34:25,147 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:34:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2019-10-14 23:34:25,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 821. [2019-10-14 23:34:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-10-14 23:34:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2019-10-14 23:34:25,294 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 98 [2019-10-14 23:34:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:25,295 INFO L462 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2019-10-14 23:34:25,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:34:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2019-10-14 23:34:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-14 23:34:25,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:25,298 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:25,298 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:25,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:25,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1612541686, now seen corresponding path program 1 times [2019-10-14 23:34:25,303 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:25,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930245930] [2019-10-14 23:34:25,304 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:25,304 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:25,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,587 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:25,764 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930245930] [2019-10-14 23:34:25,764 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:25,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:34:25,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363448999] [2019-10-14 23:34:25,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:34:25,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:25,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:34:25,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:34:25,767 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 7 states. [2019-10-14 23:34:26,197 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:26,700 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:29,260 INFO L93 Difference]: Finished difference Result 2734 states and 3697 transitions. [2019-10-14 23:34:29,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:34:29,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-10-14 23:34:29,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:29,273 INFO L225 Difference]: With dead ends: 2734 [2019-10-14 23:34:29,273 INFO L226 Difference]: Without dead ends: 1937 [2019-10-14 23:34:29,277 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:34:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2019-10-14 23:34:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1635. [2019-10-14 23:34:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1635 states. [2019-10-14 23:34:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2013 transitions. [2019-10-14 23:34:29,638 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2013 transitions. Word has length 98 [2019-10-14 23:34:29,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:29,640 INFO L462 AbstractCegarLoop]: Abstraction has 1635 states and 2013 transitions. [2019-10-14 23:34:29,640 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:34:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2013 transitions. [2019-10-14 23:34:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-14 23:34:29,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:29,645 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:29,645 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:29,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1468895920, now seen corresponding path program 1 times [2019-10-14 23:34:29,646 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:29,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531619131] [2019-10-14 23:34:29,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:29,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:29,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,979 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:34:30,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531619131] [2019-10-14 23:34:30,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017951284] [2019-10-14 23:34:30,206 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 23:34:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:30,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:34:30,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:34:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:30,667 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:34:30,667 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-14 23:34:30,667 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595707210] [2019-10-14 23:34:30,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:30,668 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:30,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:30,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:30,668 INFO L87 Difference]: Start difference. First operand 1635 states and 2013 transitions. Second operand 8 states. [2019-10-14 23:34:31,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:31,489 INFO L93 Difference]: Finished difference Result 3178 states and 3934 transitions. [2019-10-14 23:34:31,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:34:31,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2019-10-14 23:34:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:31,499 INFO L225 Difference]: With dead ends: 3178 [2019-10-14 23:34:31,500 INFO L226 Difference]: Without dead ends: 1567 [2019-10-14 23:34:31,505 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2019-10-14 23:34:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1567. [2019-10-14 23:34:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2019-10-14 23:34:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 1891 transitions. [2019-10-14 23:34:31,813 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 1891 transitions. Word has length 102 [2019-10-14 23:34:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:31,816 INFO L462 AbstractCegarLoop]: Abstraction has 1567 states and 1891 transitions. [2019-10-14 23:34:31,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 1891 transitions. [2019-10-14 23:34:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-14 23:34:31,823 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:31,824 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:32,039 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:34:32,040 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:32,041 INFO L82 PathProgramCache]: Analyzing trace with hash 844933528, now seen corresponding path program 1 times [2019-10-14 23:34:32,041 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:32,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679215751] [2019-10-14 23:34:32,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:32,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:32,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,492 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 23:34:32,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679215751] [2019-10-14 23:34:32,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138357984] [2019-10-14 23:34:32,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:34:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:33,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:34:33,042 INFO L279 TraceCheckSpWp]: Computing forward predicates...