java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:35:29,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:35:29,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:35:29,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:35:29,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:35:29,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:35:29,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:35:29,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:35:29,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:35:29,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:35:29,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:35:29,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:35:29,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:35:29,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:35:29,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:35:29,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:35:29,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:35:29,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:35:29,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:35:29,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:35:29,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:35:29,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:35:29,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:35:29,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:35:29,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:35:29,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:35:29,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:35:29,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:35:29,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:35:29,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:35:29,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:35:29,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:35:29,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:35:29,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:35:29,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:35:29,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:35:29,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:35:29,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:35:29,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:35:29,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:35:29,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:35:29,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:35:29,986 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:35:29,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:35:29,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:35:29,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:35:29,989 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:35:29,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:35:29,990 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:35:29,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:35:29,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:35:29,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:35:29,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:35:29,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:35:29,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:35:29,992 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:35:29,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:35:29,993 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:35:29,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:35:29,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:35:29,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:35:29,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:35:29,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:35:29,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:35:29,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:35:29,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:35:29,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:35:29,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:35:29,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:35:29,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:35:29,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:35:30,307 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:35:30,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:35:30,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:35:30,334 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:35:30,334 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:35:30,335 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2019-10-14 23:35:30,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf27543e/1e076dc6aaf740dbb8dea1de993f5da3/FLAGb3e4bdfd8 [2019-10-14 23:35:30,958 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:35:30,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2019-10-14 23:35:30,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf27543e/1e076dc6aaf740dbb8dea1de993f5da3/FLAGb3e4bdfd8 [2019-10-14 23:35:31,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf27543e/1e076dc6aaf740dbb8dea1de993f5da3 [2019-10-14 23:35:31,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:35:31,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:35:31,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:31,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:35:31,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:35:31,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:31" (1/1) ... [2019-10-14 23:35:31,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4924bc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31, skipping insertion in model container [2019-10-14 23:35:31,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:31" (1/1) ... [2019-10-14 23:35:31,261 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:35:31,324 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:35:31,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:31,771 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:35:31,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:31,899 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:35:31,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31 WrapperNode [2019-10-14 23:35:31,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:31,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:35:31,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:35:31,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:35:31,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2019-10-14 23:35:31,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2019-10-14 23:35:31,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2019-10-14 23:35:31,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2019-10-14 23:35:31,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2019-10-14 23:35:31,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2019-10-14 23:35:31,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... [2019-10-14 23:35:31,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:35:31,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:35:31,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:35:31,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:35:31,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:35:32,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:35:32,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:35:32,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:32,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:32,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:32,071 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:35:32,071 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:35:32,071 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:35:32,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:35:32,072 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:35:32,072 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:35:32,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:35:32,072 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:35:32,073 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:35:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:35:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:32,076 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:35:32,076 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:35:32,077 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:35:32,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:35:32,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:35:32,077 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:35:32,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:35:32,078 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:35:32,078 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:35:32,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:32,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:35:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:35:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:35:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:35:32,079 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:35:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:35:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:35:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:35:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:35:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:35:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:35:32,080 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:35:32,081 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:35:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:35:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:35:32,081 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:35:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:35:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:35:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:35:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:35:32,082 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:35:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:35:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:35:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:35:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:35:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:35:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:35:32,083 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:35:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:35:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:35:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:35:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:35:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:35:32,084 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:35:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:35:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:35:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:35:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:32,085 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:35:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:35:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:35:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:35:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:32,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:35:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:35:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:35:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:35:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:35:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:35:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:35:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:35:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:35:32,089 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:35:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:35:32,090 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:35:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:35:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:35:32,091 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:35:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:35:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:35:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:35:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:35:32,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:35:33,107 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:35:33,107 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:35:33,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:33 BoogieIcfgContainer [2019-10-14 23:35:33,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:35:33,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:35:33,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:35:33,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:35:33,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:35:31" (1/3) ... [2019-10-14 23:35:33,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4272a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:33, skipping insertion in model container [2019-10-14 23:35:33,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:31" (2/3) ... [2019-10-14 23:35:33,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4272a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:33, skipping insertion in model container [2019-10-14 23:35:33,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:33" (3/3) ... [2019-10-14 23:35:33,117 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2019-10-14 23:35:33,127 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:35:33,135 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:35:33,146 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:35:33,181 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:35:33,181 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:35:33,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:35:33,181 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:35:33,182 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:35:33,182 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:35:33,182 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:35:33,182 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:35:33,205 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2019-10-14 23:35:33,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:35:33,215 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:33,216 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:35:33,218 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:33,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1292486909, now seen corresponding path program 1 times [2019-10-14 23:35:33,231 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:33,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700682162] [2019-10-14 23:35:33,232 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:33,232 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:33,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:33,935 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:34,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700682162] [2019-10-14 23:35:34,069 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:34,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:35:34,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499658065] [2019-10-14 23:35:34,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:35:34,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:34,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:35:34,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:34,096 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2019-10-14 23:35:35,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:35,247 INFO L93 Difference]: Finished difference Result 311 states and 408 transitions. [2019-10-14 23:35:35,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:35:35,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:35:35,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:35,264 INFO L225 Difference]: With dead ends: 311 [2019-10-14 23:35:35,265 INFO L226 Difference]: Without dead ends: 174 [2019-10-14 23:35:35,270 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:35,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-14 23:35:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 138. [2019-10-14 23:35:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-14 23:35:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2019-10-14 23:35:35,361 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 51 [2019-10-14 23:35:35,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:35,361 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2019-10-14 23:35:35,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:35:35,362 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2019-10-14 23:35:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:35:35,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:35,366 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:35:35,366 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:35,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:35,367 INFO L82 PathProgramCache]: Analyzing trace with hash -11798802, now seen corresponding path program 1 times [2019-10-14 23:35:35,367 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:35,367 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398716933] [2019-10-14 23:35:35,367 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:35,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:35,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:35,704 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:35,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398716933] [2019-10-14 23:35:35,787 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:35,787 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:35:35,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676279578] [2019-10-14 23:35:35,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:35:35,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:35,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:35:35,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:35:35,790 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 5 states. [2019-10-14 23:35:36,314 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:37,384 INFO L93 Difference]: Finished difference Result 246 states and 307 transitions. [2019-10-14 23:35:37,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:35:37,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:35:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:37,389 INFO L225 Difference]: With dead ends: 246 [2019-10-14 23:35:37,389 INFO L226 Difference]: Without dead ends: 164 [2019-10-14 23:35:37,391 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:35:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-14 23:35:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2019-10-14 23:35:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-14 23:35:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2019-10-14 23:35:37,431 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 52 [2019-10-14 23:35:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:37,431 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2019-10-14 23:35:37,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:35:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2019-10-14 23:35:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:35:37,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:37,434 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 23:35:37,434 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:37,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1490469892, now seen corresponding path program 1 times [2019-10-14 23:35:37,435 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:37,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232739086] [2019-10-14 23:35:37,435 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:37,436 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:37,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:37,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:37,952 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:38,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232739086] [2019-10-14 23:35:38,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:38,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:38,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786382864] [2019-10-14 23:35:38,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:38,061 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:38,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:38,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:38,062 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand 9 states. [2019-10-14 23:35:38,615 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:38,964 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:35:39,275 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:39,543 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:40,518 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:42,725 INFO L93 Difference]: Finished difference Result 439 states and 556 transitions. [2019-10-14 23:35:42,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:35:42,726 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-14 23:35:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:42,732 INFO L225 Difference]: With dead ends: 439 [2019-10-14 23:35:42,732 INFO L226 Difference]: Without dead ends: 338 [2019-10-14 23:35:42,734 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:35:42,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2019-10-14 23:35:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 269. [2019-10-14 23:35:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2019-10-14 23:35:42,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 328 transitions. [2019-10-14 23:35:42,804 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 328 transitions. Word has length 57 [2019-10-14 23:35:42,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:42,805 INFO L462 AbstractCegarLoop]: Abstraction has 269 states and 328 transitions. [2019-10-14 23:35:42,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:42,805 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 328 transitions. [2019-10-14 23:35:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 23:35:42,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:42,809 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:35:42,809 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:42,810 INFO L82 PathProgramCache]: Analyzing trace with hash -512554003, now seen corresponding path program 1 times [2019-10-14 23:35:42,810 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:42,810 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381063361] [2019-10-14 23:35:42,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:42,810 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:42,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,136 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:43,254 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381063361] [2019-10-14 23:35:43,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:43,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:43,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984262157] [2019-10-14 23:35:43,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:43,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:43,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:43,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:43,256 INFO L87 Difference]: Start difference. First operand 269 states and 328 transitions. Second operand 9 states. [2019-10-14 23:35:43,697 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:44,936 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:45,372 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:45,647 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:45,961 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:47,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:47,489 INFO L93 Difference]: Finished difference Result 864 states and 1152 transitions. [2019-10-14 23:35:47,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:35:47,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-14 23:35:47,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:47,497 INFO L225 Difference]: With dead ends: 864 [2019-10-14 23:35:47,497 INFO L226 Difference]: Without dead ends: 623 [2019-10-14 23:35:47,499 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:35:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-14 23:35:47,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 486. [2019-10-14 23:35:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-10-14 23:35:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 596 transitions. [2019-10-14 23:35:47,621 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 596 transitions. Word has length 62 [2019-10-14 23:35:47,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:47,621 INFO L462 AbstractCegarLoop]: Abstraction has 486 states and 596 transitions. [2019-10-14 23:35:47,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:47,622 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 596 transitions. [2019-10-14 23:35:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 23:35:47,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:47,626 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:35:47,626 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:47,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:47,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1361940215, now seen corresponding path program 1 times [2019-10-14 23:35:47,627 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:47,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207237754] [2019-10-14 23:35:47,627 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:47,627 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:47,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,963 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:48,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207237754] [2019-10-14 23:35:48,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:48,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:48,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267650953] [2019-10-14 23:35:48,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:48,061 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:48,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:48,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:48,063 INFO L87 Difference]: Start difference. First operand 486 states and 596 transitions. Second operand 10 states. [2019-10-14 23:35:48,650 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:49,839 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:50,147 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:50,429 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:51,088 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:52,483 INFO L93 Difference]: Finished difference Result 1373 states and 1890 transitions. [2019-10-14 23:35:52,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-14 23:35:52,486 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-14 23:35:52,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:52,493 INFO L225 Difference]: With dead ends: 1373 [2019-10-14 23:35:52,493 INFO L226 Difference]: Without dead ends: 915 [2019-10-14 23:35:52,496 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:35:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2019-10-14 23:35:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 709. [2019-10-14 23:35:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2019-10-14 23:35:52,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 863 transitions. [2019-10-14 23:35:52,652 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 863 transitions. Word has length 66 [2019-10-14 23:35:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:52,653 INFO L462 AbstractCegarLoop]: Abstraction has 709 states and 863 transitions. [2019-10-14 23:35:52,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:35:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 863 transitions. [2019-10-14 23:35:52,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:35:52,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:52,656 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:35:52,657 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:52,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:52,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1572074791, now seen corresponding path program 1 times [2019-10-14 23:35:52,657 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:52,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683313185] [2019-10-14 23:35:52,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:52,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:52,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,972 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:53,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683313185] [2019-10-14 23:35:53,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:53,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:53,139 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310469461] [2019-10-14 23:35:53,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:53,140 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:53,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:53,141 INFO L87 Difference]: Start difference. First operand 709 states and 863 transitions. Second operand 10 states. [2019-10-14 23:35:53,637 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:54,814 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:55,103 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:35:55,427 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:55,731 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:57,562 INFO L93 Difference]: Finished difference Result 2413 states and 3450 transitions. [2019-10-14 23:35:57,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:35:57,562 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-14 23:35:57,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:57,575 INFO L225 Difference]: With dead ends: 2413 [2019-10-14 23:35:57,575 INFO L226 Difference]: Without dead ends: 1732 [2019-10-14 23:35:57,579 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2019-10-14 23:35:57,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2019-10-14 23:35:57,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1279. [2019-10-14 23:35:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2019-10-14 23:35:57,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1554 transitions. [2019-10-14 23:35:57,800 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1554 transitions. Word has length 89 [2019-10-14 23:35:57,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:57,800 INFO L462 AbstractCegarLoop]: Abstraction has 1279 states and 1554 transitions. [2019-10-14 23:35:57,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:35:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1554 transitions. [2019-10-14 23:35:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:35:57,804 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:57,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:35:57,805 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:57,805 INFO L82 PathProgramCache]: Analyzing trace with hash -153406106, now seen corresponding path program 1 times [2019-10-14 23:35:57,805 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:57,806 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786163350] [2019-10-14 23:35:57,806 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:57,806 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:57,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,128 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:35:58,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786163350] [2019-10-14 23:35:58,309 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:58,309 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:58,309 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194043138] [2019-10-14 23:35:58,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:58,310 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:58,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:58,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:58,312 INFO L87 Difference]: Start difference. First operand 1279 states and 1554 transitions. Second operand 10 states. [2019-10-14 23:35:59,812 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:00,088 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:00,389 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:00,662 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:01,876 INFO L93 Difference]: Finished difference Result 2983 states and 3988 transitions. [2019-10-14 23:36:01,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:01,877 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-14 23:36:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:01,889 INFO L225 Difference]: With dead ends: 2983 [2019-10-14 23:36:01,889 INFO L226 Difference]: Without dead ends: 1732 [2019-10-14 23:36:01,893 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:36:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2019-10-14 23:36:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1319. [2019-10-14 23:36:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2019-10-14 23:36:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1594 transitions. [2019-10-14 23:36:02,155 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1594 transitions. Word has length 89 [2019-10-14 23:36:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:02,155 INFO L462 AbstractCegarLoop]: Abstraction has 1319 states and 1594 transitions. [2019-10-14 23:36:02,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1594 transitions. [2019-10-14 23:36:02,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:36:02,159 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:02,159 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:02,160 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:02,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:02,160 INFO L82 PathProgramCache]: Analyzing trace with hash 548193768, now seen corresponding path program 1 times [2019-10-14 23:36:02,160 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:02,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836655690] [2019-10-14 23:36:02,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:02,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:02,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,460 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:02,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836655690] [2019-10-14 23:36:02,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:02,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:02,605 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673060834] [2019-10-14 23:36:02,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:02,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:02,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:02,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:02,607 INFO L87 Difference]: Start difference. First operand 1319 states and 1594 transitions. Second operand 12 states. [2019-10-14 23:36:03,228 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:03,525 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:03,783 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:04,709 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:04,989 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:05,240 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:06,405 INFO L93 Difference]: Finished difference Result 2667 states and 3530 transitions. [2019-10-14 23:36:06,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:06,407 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-14 23:36:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:06,416 INFO L225 Difference]: With dead ends: 2667 [2019-10-14 23:36:06,416 INFO L226 Difference]: Without dead ends: 1376 [2019-10-14 23:36:06,420 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:36:06,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2019-10-14 23:36:06,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1087. [2019-10-14 23:36:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1087 states. [2019-10-14 23:36:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1282 transitions. [2019-10-14 23:36:06,650 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1282 transitions. Word has length 89 [2019-10-14 23:36:06,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:06,651 INFO L462 AbstractCegarLoop]: Abstraction has 1087 states and 1282 transitions. [2019-10-14 23:36:06,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1282 transitions. [2019-10-14 23:36:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 23:36:06,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:06,657 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:06,658 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:06,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:06,658 INFO L82 PathProgramCache]: Analyzing trace with hash 81932175, now seen corresponding path program 1 times [2019-10-14 23:36:06,660 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:06,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425114322] [2019-10-14 23:36:06,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:06,660 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:06,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,978 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:07,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425114322] [2019-10-14 23:36:07,087 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:07,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:07,087 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594131826] [2019-10-14 23:36:07,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:07,088 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:07,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:07,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:07,089 INFO L87 Difference]: Start difference. First operand 1087 states and 1282 transitions. Second operand 8 states. [2019-10-14 23:36:07,544 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189