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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:35:04,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:35:04,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:35:04,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:35:04,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:35:04,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:35:04,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:35:04,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:35:04,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:35:04,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:35:04,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:35:04,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:35:04,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:35:04,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:35:04,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:35:04,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:35:04,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:35:04,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:35:04,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:35:04,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:35:04,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:35:04,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:35:04,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:35:04,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:35:04,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:35:04,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:35:04,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:35:04,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:35:04,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:35:04,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:35:04,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:35:04,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:35:04,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:35:04,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:35:04,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:35:04,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:35:04,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:35:04,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:35:04,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:35:04,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:35:04,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:35:04,972 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 [2019-10-13 19:35:04,990 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:35:04,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:35:04,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:35:04,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:35:04,993 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:35:04,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:35:04,993 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:35:04,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:35:04,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:35:04,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:35:04,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:35:04,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:35:04,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:35:04,996 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:35:04,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:35:04,996 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:35:04,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:35:04,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:35:04,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:35:04,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:35:04,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:35:04,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:35:04,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:35:04,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:35:04,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:35:04,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:35:04,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:35:04,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:35:04,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:35:05,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:35:05,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:35:05,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:35:05,283 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:35:05,283 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:35:05,284 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product63.cil.c [2019-10-13 19:35:05,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b5fe4fe/07bfd8550f854e24be7d7c3259265ebb/FLAG44ec904aa [2019-10-13 19:35:05,914 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:35:05,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product63.cil.c [2019-10-13 19:35:05,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b5fe4fe/07bfd8550f854e24be7d7c3259265ebb/FLAG44ec904aa [2019-10-13 19:35:06,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9b5fe4fe/07bfd8550f854e24be7d7c3259265ebb [2019-10-13 19:35:06,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:35:06,203 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:35:06,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:35:06,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:35:06,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:35:06,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:06" (1/1) ... [2019-10-13 19:35:06,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b043f65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06, skipping insertion in model container [2019-10-13 19:35:06,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:35:06" (1/1) ... [2019-10-13 19:35:06,219 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:35:06,274 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:35:06,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:35:06,778 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:35:06,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:35:06,938 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:35:06,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06 WrapperNode [2019-10-13 19:35:06,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:35:06,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:35:06,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:35:06,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:35:06,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06" (1/1) ... [2019-10-13 19:35:06,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06" (1/1) ... [2019-10-13 19:35:06,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06" (1/1) ... [2019-10-13 19:35:06,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06" (1/1) ... [2019-10-13 19:35:07,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06" (1/1) ... [2019-10-13 19:35:07,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06" (1/1) ... [2019-10-13 19:35:07,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06" (1/1) ... [2019-10-13 19:35:07,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:35:07,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:35:07,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:35:07,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:35:07,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06" (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 [2019-10-13 19:35:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:35:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:35:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:35:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:35:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:35:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:35:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:35:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:35:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:35:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:35:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:35:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:35:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:35:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:35:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:35:07,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:35:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:35:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:35:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:35:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:35:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:35:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:35:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:35:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:35:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:35:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:35:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:35:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:35:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:35:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:35:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:35:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:35:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:35:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:35:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:35:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:35:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:35:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:35:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:35:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:35:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:35:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:35:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:35:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:35:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:35:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:35:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:35:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:35:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:35:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:35:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:35:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:35:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:35:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:35:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:35:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:35:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:35:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:35:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:35:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:35:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:35:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:35:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:35:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:35:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:35:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:35:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:35:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:35:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:35:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:35:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:35:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:35:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:35:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:35:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:35:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:35:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:35:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:35:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:35:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:35:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:35:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:35:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:35:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:35:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:35:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:35:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:35:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:35:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:35:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:35:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:35:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:35:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:35:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:35:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:35:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:35:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:35:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:35:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:35:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:35:08,350 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:35:08,350 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:35:08,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:08 BoogieIcfgContainer [2019-10-13 19:35:08,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:35:08,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:35:08,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:35:08,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:35:08,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:35:06" (1/3) ... [2019-10-13 19:35:08,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134e512f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:08, skipping insertion in model container [2019-10-13 19:35:08,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:35:06" (2/3) ... [2019-10-13 19:35:08,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134e512f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:35:08, skipping insertion in model container [2019-10-13 19:35:08,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:35:08" (3/3) ... [2019-10-13 19:35:08,363 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product63.cil.c [2019-10-13 19:35:08,372 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:35:08,381 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:35:08,393 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:35:08,423 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:35:08,423 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:35:08,423 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:35:08,424 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:35:08,424 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:35:08,424 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:35:08,424 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:35:08,424 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:35:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2019-10-13 19:35:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:35:08,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:08,456 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] [2019-10-13 19:35:08,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:08,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:08,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1613581470, now seen corresponding path program 1 times [2019-10-13 19:35:08,473 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:08,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346321037] [2019-10-13 19:35:08,474 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:08,474 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:08,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,162 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:09,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346321037] [2019-10-13 19:35:09,282 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:09,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:35:09,283 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809661380] [2019-10-13 19:35:09,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:35:09,288 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:09,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:35:09,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:35:09,305 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2019-10-13 19:35:10,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:10,673 INFO L93 Difference]: Finished difference Result 359 states and 470 transitions. [2019-10-13 19:35:10,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:35:10,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:35:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:10,694 INFO L225 Difference]: With dead ends: 359 [2019-10-13 19:35:10,694 INFO L226 Difference]: Without dead ends: 194 [2019-10-13 19:35:10,699 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 [2019-10-13 19:35:10,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-10-13 19:35:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 156. [2019-10-13 19:35:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-10-13 19:35:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 187 transitions. [2019-10-13 19:35:10,818 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 187 transitions. Word has length 46 [2019-10-13 19:35:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:10,819 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 187 transitions. [2019-10-13 19:35:10,819 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:35:10,819 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 187 transitions. [2019-10-13 19:35:10,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:35:10,822 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:10,823 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] [2019-10-13 19:35:10,823 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:10,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:10,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1476283687, now seen corresponding path program 1 times [2019-10-13 19:35:10,824 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:10,824 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982879095] [2019-10-13 19:35:10,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:10,824 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:10,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:11,172 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:11,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982879095] [2019-10-13 19:35:11,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:11,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:35:11,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835983979] [2019-10-13 19:35:11,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:35:11,211 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:11,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:35:11,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:35:11,212 INFO L87 Difference]: Start difference. First operand 156 states and 187 transitions. Second operand 4 states. [2019-10-13 19:35:11,717 WARN L191 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:12,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:12,729 INFO L93 Difference]: Finished difference Result 286 states and 353 transitions. [2019-10-13 19:35:12,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:35:12,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:35:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:12,735 INFO L225 Difference]: With dead ends: 286 [2019-10-13 19:35:12,735 INFO L226 Difference]: Without dead ends: 178 [2019-10-13 19:35:12,737 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 [2019-10-13 19:35:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-10-13 19:35:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 147. [2019-10-13 19:35:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-10-13 19:35:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 175 transitions. [2019-10-13 19:35:12,777 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 175 transitions. Word has length 47 [2019-10-13 19:35:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:12,778 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 175 transitions. [2019-10-13 19:35:12,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:35:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 175 transitions. [2019-10-13 19:35:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:35:12,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:12,780 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] [2019-10-13 19:35:12,781 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:12,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:12,781 INFO L82 PathProgramCache]: Analyzing trace with hash 474549322, now seen corresponding path program 1 times [2019-10-13 19:35:12,781 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:12,782 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065234713] [2019-10-13 19:35:12,782 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:12,782 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:12,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,121 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:13,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065234713] [2019-10-13 19:35:13,259 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:13,259 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:13,259 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740002804] [2019-10-13 19:35:13,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:13,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:13,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:13,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:13,262 INFO L87 Difference]: Start difference. First operand 147 states and 175 transitions. Second operand 8 states. [2019-10-13 19:35:13,765 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:14,112 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:35:14,377 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:14,671 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:15,476 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:17,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:17,952 INFO L93 Difference]: Finished difference Result 501 states and 627 transitions. [2019-10-13 19:35:17,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:17,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:35:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:17,960 INFO L225 Difference]: With dead ends: 501 [2019-10-13 19:35:17,963 INFO L226 Difference]: Without dead ends: 378 [2019-10-13 19:35:17,965 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 [2019-10-13 19:35:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2019-10-13 19:35:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 312. [2019-10-13 19:35:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2019-10-13 19:35:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 382 transitions. [2019-10-13 19:35:18,067 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 382 transitions. Word has length 51 [2019-10-13 19:35:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:18,068 INFO L462 AbstractCegarLoop]: Abstraction has 312 states and 382 transitions. [2019-10-13 19:35:18,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 382 transitions. [2019-10-13 19:35:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:35:18,071 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:18,071 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] [2019-10-13 19:35:18,072 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:18,072 INFO L82 PathProgramCache]: Analyzing trace with hash 912243430, now seen corresponding path program 1 times [2019-10-13 19:35:18,072 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:18,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708094814] [2019-10-13 19:35:18,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:18,073 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:18,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,422 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:18,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708094814] [2019-10-13 19:35:18,523 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:18,523 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:18,524 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452314411] [2019-10-13 19:35:18,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:18,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:18,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:18,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:18,527 INFO L87 Difference]: Start difference. First operand 312 states and 382 transitions. Second operand 8 states. [2019-10-13 19:35:19,053 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:20,011 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:20,527 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:20,866 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:21,154 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:21,857 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:23,190 INFO L93 Difference]: Finished difference Result 1010 states and 1311 transitions. [2019-10-13 19:35:23,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:23,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-13 19:35:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:23,197 INFO L225 Difference]: With dead ends: 1010 [2019-10-13 19:35:23,198 INFO L226 Difference]: Without dead ends: 722 [2019-10-13 19:35:23,199 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:23,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2019-10-13 19:35:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 579. [2019-10-13 19:35:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-10-13 19:35:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 714 transitions. [2019-10-13 19:35:23,326 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 714 transitions. Word has length 57 [2019-10-13 19:35:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:23,327 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 714 transitions. [2019-10-13 19:35:23,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:23,327 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 714 transitions. [2019-10-13 19:35:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:35:23,331 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:23,331 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] [2019-10-13 19:35:23,331 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:23,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:23,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1983295510, now seen corresponding path program 1 times [2019-10-13 19:35:23,332 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:23,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082304357] [2019-10-13 19:35:23,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:23,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:23,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,691 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:23,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082304357] [2019-10-13 19:35:23,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:23,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:23,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908378962] [2019-10-13 19:35:23,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:23,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:23,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:23,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:23,779 INFO L87 Difference]: Start difference. First operand 579 states and 714 transitions. Second operand 9 states. [2019-10-13 19:35:24,286 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:25,283 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:25,605 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:25,896 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:26,737 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:27,055 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:28,326 INFO L93 Difference]: Finished difference Result 1607 states and 2148 transitions. [2019-10-13 19:35:28,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:35:28,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-13 19:35:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:28,335 INFO L225 Difference]: With dead ends: 1607 [2019-10-13 19:35:28,335 INFO L226 Difference]: Without dead ends: 1052 [2019-10-13 19:35:28,338 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:35:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2019-10-13 19:35:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 871. [2019-10-13 19:35:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 871 states. [2019-10-13 19:35:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1071 transitions. [2019-10-13 19:35:28,487 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1071 transitions. Word has length 61 [2019-10-13 19:35:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:28,487 INFO L462 AbstractCegarLoop]: Abstraction has 871 states and 1071 transitions. [2019-10-13 19:35:28,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1071 transitions. [2019-10-13 19:35:28,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:35:28,491 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:28,491 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, 1] [2019-10-13 19:35:28,491 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:28,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:28,492 INFO L82 PathProgramCache]: Analyzing trace with hash -575696431, now seen corresponding path program 1 times [2019-10-13 19:35:28,492 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:28,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861968399] [2019-10-13 19:35:28,492 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:28,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:28,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,821 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:28,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861968399] [2019-10-13 19:35:28,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:28,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:28,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207268994] [2019-10-13 19:35:28,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:28,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:28,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:28,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:28,986 INFO L87 Difference]: Start difference. First operand 871 states and 1071 transitions. Second operand 9 states. [2019-10-13 19:35:30,240 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:30,554 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:35:30,877 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:31,162 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:32,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:32,582 INFO L93 Difference]: Finished difference Result 1983 states and 2672 transitions. [2019-10-13 19:35:32,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:32,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2019-10-13 19:35:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:32,597 INFO L225 Difference]: With dead ends: 1983 [2019-10-13 19:35:32,597 INFO L226 Difference]: Without dead ends: 1136 [2019-10-13 19:35:32,602 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:35:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2019-10-13 19:35:32,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 897. [2019-10-13 19:35:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2019-10-13 19:35:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1099 transitions. [2019-10-13 19:35:32,819 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1099 transitions. Word has length 103 [2019-10-13 19:35:32,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:32,820 INFO L462 AbstractCegarLoop]: Abstraction has 897 states and 1099 transitions. [2019-10-13 19:35:32,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:32,820 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1099 transitions. [2019-10-13 19:35:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:35:32,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:32,825 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, 1] [2019-10-13 19:35:32,826 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:32,826 INFO L82 PathProgramCache]: Analyzing trace with hash -928784813, now seen corresponding path program 1 times [2019-10-13 19:35:32,827 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:32,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340817880] [2019-10-13 19:35:32,827 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:32,827 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:32,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,180 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:33,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340817880] [2019-10-13 19:35:33,362 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:33,362 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:35:33,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878004714] [2019-10-13 19:35:33,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:35:33,363 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:33,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:35:33,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:35:33,364 INFO L87 Difference]: Start difference. First operand 897 states and 1099 transitions. Second operand 11 states. [2019-10-13 19:35:34,110 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:34,388 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:34,657 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:35,569 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:35,870 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:36,154 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:37,748 INFO L93 Difference]: Finished difference Result 2029 states and 2720 transitions. [2019-10-13 19:35:37,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:37,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2019-10-13 19:35:37,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:37,758 INFO L225 Difference]: With dead ends: 2029 [2019-10-13 19:35:37,758 INFO L226 Difference]: Without dead ends: 1156 [2019-10-13 19:35:37,763 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:35:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2019-10-13 19:35:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 913. [2019-10-13 19:35:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2019-10-13 19:35:38,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1115 transitions. [2019-10-13 19:35:38,005 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1115 transitions. Word has length 103 [2019-10-13 19:35:38,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:38,006 INFO L462 AbstractCegarLoop]: Abstraction has 913 states and 1115 transitions. [2019-10-13 19:35:38,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:35:38,006 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1115 transitions. [2019-10-13 19:35:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:35:38,010 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:38,011 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, 1] [2019-10-13 19:35:38,011 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:38,012 INFO L82 PathProgramCache]: Analyzing trace with hash 204405780, now seen corresponding path program 1 times [2019-10-13 19:35:38,020 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:38,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551981626] [2019-10-13 19:35:38,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:38,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:38,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,403 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:38,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551981626] [2019-10-13 19:35:38,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:38,582 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:35:38,582 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543023400] [2019-10-13 19:35:38,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:35:38,584 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:38,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:35:38,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:35:38,584 INFO L87 Difference]: Start difference. First operand 913 states and 1115 transitions. Second operand 7 states. [2019-10-13 19:35:39,029 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:39,592 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:42,459 INFO L93 Difference]: Finished difference Result 2958 states and 3993 transitions. [2019-10-13 19:35:42,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:35:42,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2019-10-13 19:35:42,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:42,476 INFO L225 Difference]: With dead ends: 2958 [2019-10-13 19:35:42,476 INFO L226 Difference]: Without dead ends: 2069 [2019-10-13 19:35:42,480 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:42,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2019-10-13 19:35:42,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1767. [2019-10-13 19:35:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2019-10-13 19:35:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2181 transitions. [2019-10-13 19:35:42,831 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2181 transitions. Word has length 103 [2019-10-13 19:35:42,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:42,831 INFO L462 AbstractCegarLoop]: Abstraction has 1767 states and 2181 transitions. [2019-10-13 19:35:42,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:35:42,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2181 transitions. [2019-10-13 19:35:42,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 19:35:42,835 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:42,835 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, 1, 1, 1, 1, 1] [2019-10-13 19:35:42,835 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:42,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:42,836 INFO L82 PathProgramCache]: Analyzing trace with hash -796699686, now seen corresponding path program 1 times [2019-10-13 19:35:42,836 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:42,836 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848297210] [2019-10-13 19:35:42,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:42,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:42,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,165 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:35:43,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848297210] [2019-10-13 19:35:43,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329374242] [2019-10-13 19:35:43,583 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 [2019-10-13 19:35:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:43,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:35:43,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:35:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:44,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:35:44,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-13 19:35:44,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138955349] [2019-10-13 19:35:44,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:44,001 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:44,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:44,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:44,002 INFO L87 Difference]: Start difference. First operand 1767 states and 2181 transitions. Second operand 8 states. [2019-10-13 19:35:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:44,826 INFO L93 Difference]: Finished difference Result 3438 states and 4268 transitions. [2019-10-13 19:35:44,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:35:44,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-10-13 19:35:44,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:44,838 INFO L225 Difference]: With dead ends: 3438 [2019-10-13 19:35:44,839 INFO L226 Difference]: Without dead ends: 1695 [2019-10-13 19:35:44,845 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 132 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:44,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states.