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_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:33:48,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:33:48,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:33:48,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:33:48,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:33:48,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:33:48,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:33:48,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:33:48,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:33:48,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:33:48,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:33:48,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:33:48,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:33:48,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:33:48,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:33:48,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:33:48,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:33:48,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:33:48,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:33:48,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:33:48,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:33:48,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:33:48,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:33:48,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:33:48,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:33:48,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:33:48,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:33:48,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:33:48,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:33:48,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:33:48,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:33:48,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:33:48,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:33:48,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:33:48,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:33:48,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:33:48,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:33:48,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:33:48,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:33:48,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:33:48,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:33:48,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:33:48,094 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:33:48,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:33:48,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:33:48,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:33:48,097 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:33:48,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:33:48,097 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:33:48,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:33:48,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:33:48,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:33:48,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:33:48,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:33:48,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:33:48,099 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:33:48,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:33:48,099 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:33:48,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:33:48,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:33:48,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:33:48,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:33:48,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:33:48,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:33:48,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:33:48,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:33:48,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:33:48,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:33:48,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:33:48,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:33:48,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:33:48,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:33:48,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:33:48,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:33:48,440 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:33:48,441 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:33:48,441 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product48.cil.c [2019-10-14 23:33:48,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676855d80/30cf948ca1234c34a29af2edf569bf25/FLAG30d31dc3d [2019-10-14 23:33:49,029 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:33:49,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product48.cil.c [2019-10-14 23:33:49,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676855d80/30cf948ca1234c34a29af2edf569bf25/FLAG30d31dc3d [2019-10-14 23:33:49,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/676855d80/30cf948ca1234c34a29af2edf569bf25 [2019-10-14 23:33:49,325 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:33:49,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:33:49,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:33:49,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:33:49,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:33:49,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:49" (1/1) ... [2019-10-14 23:33:49,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a30decc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49, skipping insertion in model container [2019-10-14 23:33:49,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:49" (1/1) ... [2019-10-14 23:33:49,342 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:33:49,404 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:33:49,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:33:49,878 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:33:49,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:33:50,019 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:33:50,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50 WrapperNode [2019-10-14 23:33:50,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:33:50,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:33:50,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:33:50,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:33:50,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50" (1/1) ... [2019-10-14 23:33:50,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50" (1/1) ... [2019-10-14 23:33:50,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50" (1/1) ... [2019-10-14 23:33:50,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50" (1/1) ... [2019-10-14 23:33:50,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50" (1/1) ... [2019-10-14 23:33:50,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50" (1/1) ... [2019-10-14 23:33:50,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50" (1/1) ... [2019-10-14 23:33:50,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:33:50,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:33:50,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:33:50,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:33:50,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:33:50,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:33:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:33:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:33:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:33:50,173 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:33:50,174 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:33:50,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:33:50,174 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:33:50,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:33:50,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:33:50,174 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:33:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:33:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:33:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:33:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:33:50,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:33:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:33:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:33:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:33:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:33:50,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:33:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:33:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:33:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:33:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:33:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:33:50,177 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:33:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:33:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:33:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:33:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:33:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:33:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:33:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:33:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:33:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:33:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:33:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:33:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:33:50,180 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:33:50,180 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:33:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:33:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:33:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:33:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:33:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:33:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:33:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:33:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:33:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:33:50,181 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:33:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:33:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:33:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:33:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:33:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:33:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:33:50,182 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:33:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:33:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:33:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:33:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:33:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:33:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:33:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:33:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:33:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:33:50,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:33:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:33:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:33:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:33:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:33:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:33:50,185 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:33:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:33:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:33:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:33:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:33:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:33:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:33:50,187 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:33:50,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:33:50,187 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:33:50,187 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:33:50,187 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:33:50,187 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:33:50,187 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:33:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:33:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:33:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:33:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:33:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:33:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:33:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:33:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:33:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:33:51,352 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:33:51,352 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:33:51,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:33:51 BoogieIcfgContainer [2019-10-14 23:33:51,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:33:51,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:33:51,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:33:51,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:33:51,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:33:49" (1/3) ... [2019-10-14 23:33:51,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cebb447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:33:51, skipping insertion in model container [2019-10-14 23:33:51,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:50" (2/3) ... [2019-10-14 23:33:51,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cebb447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:33:51, skipping insertion in model container [2019-10-14 23:33:51,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:33:51" (3/3) ... [2019-10-14 23:33:51,365 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product48.cil.c [2019-10-14 23:33:51,376 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:33:51,386 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:33:51,398 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:33:51,438 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:33:51,439 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:33:51,439 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:33:51,439 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:33:51,439 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:33:51,439 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:33:51,440 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:33:51,440 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:33:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2019-10-14 23:33:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:33:51,473 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:51,474 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:33:51,476 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:51,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash -952681071, now seen corresponding path program 1 times [2019-10-14 23:33:51,491 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:51,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669462578] [2019-10-14 23:33:51,492 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:51,492 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:51,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:52,222 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:33:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:52,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:33:52,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669462578] [2019-10-14 23:33:52,297 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:33:52,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:33:52,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628963186] [2019-10-14 23:33:52,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:33:52,311 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:33:52,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:33:52,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:33:52,330 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 3 states. [2019-10-14 23:33:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:33:53,648 INFO L93 Difference]: Finished difference Result 326 states and 427 transitions. [2019-10-14 23:33:53,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:33:53,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:33:53,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:33:53,666 INFO L225 Difference]: With dead ends: 326 [2019-10-14 23:33:53,666 INFO L226 Difference]: Without dead ends: 177 [2019-10-14 23:33:53,675 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:33:53,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-10-14 23:33:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 140. [2019-10-14 23:33:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-14 23:33:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2019-10-14 23:33:53,785 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 46 [2019-10-14 23:33:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:33:53,785 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2019-10-14 23:33:53,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:33:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2019-10-14 23:33:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:33:53,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:53,789 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:33:53,790 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:53,790 INFO L82 PathProgramCache]: Analyzing trace with hash -448216280, now seen corresponding path program 1 times [2019-10-14 23:33:53,791 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:53,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364864135] [2019-10-14 23:33:53,791 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:53,791 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:53,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:54,133 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:33:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:33:54,170 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364864135] [2019-10-14 23:33:54,170 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:33:54,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:33:54,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826766988] [2019-10-14 23:33:54,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:33:54,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:33:54,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:33:54,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:33:54,180 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand 4 states. [2019-10-14 23:33:54,727 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:33:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:33:55,738 INFO L93 Difference]: Finished difference Result 249 states and 306 transitions. [2019-10-14 23:33:55,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:33:55,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:33:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:33:55,742 INFO L225 Difference]: With dead ends: 249 [2019-10-14 23:33:55,742 INFO L226 Difference]: Without dead ends: 161 [2019-10-14 23:33:55,745 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:33:55,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-14 23:33:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 131. [2019-10-14 23:33:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-10-14 23:33:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 154 transitions. [2019-10-14 23:33:55,785 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 154 transitions. Word has length 47 [2019-10-14 23:33:55,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:33:55,785 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 154 transitions. [2019-10-14 23:33:55,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:33:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 154 transitions. [2019-10-14 23:33:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:33:55,787 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:55,788 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 23:33:55,788 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:55,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:55,788 INFO L82 PathProgramCache]: Analyzing trace with hash -673738792, now seen corresponding path program 1 times [2019-10-14 23:33:55,789 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:55,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364785346] [2019-10-14 23:33:55,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:55,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:55,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:56,175 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:33:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:33:56,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364785346] [2019-10-14 23:33:56,327 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:33:56,327 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:33:56,327 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835983979] [2019-10-14 23:33:56,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:33:56,328 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:33:56,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:33:56,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:33:56,329 INFO L87 Difference]: Start difference. First operand 131 states and 154 transitions. Second operand 8 states. [2019-10-14 23:33:56,880 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:33:57,227 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:33:57,524 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:33:57,792 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:33:58,677 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:00,829 INFO L93 Difference]: Finished difference Result 452 states and 563 transitions. [2019-10-14 23:34:00,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:34:00,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-14 23:34:00,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:00,836 INFO L225 Difference]: With dead ends: 452 [2019-10-14 23:34:00,836 INFO L226 Difference]: Without dead ends: 345 [2019-10-14 23:34:00,840 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:34:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2019-10-14 23:34:00,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 276. [2019-10-14 23:34:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2019-10-14 23:34:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 336 transitions. [2019-10-14 23:34:00,927 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 336 transitions. Word has length 52 [2019-10-14 23:34:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:00,927 INFO L462 AbstractCegarLoop]: Abstraction has 276 states and 336 transitions. [2019-10-14 23:34:00,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 336 transitions. [2019-10-14 23:34:00,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:34:00,930 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:00,931 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:00,931 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:00,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1909301517, now seen corresponding path program 1 times [2019-10-14 23:34:00,932 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:00,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791896708] [2019-10-14 23:34:00,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:00,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:00,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,277 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:01,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791896708] [2019-10-14 23:34:01,383 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:01,383 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:34:01,383 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830936773] [2019-10-14 23:34:01,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:01,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:01,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:01,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:34:01,385 INFO L87 Difference]: Start difference. First operand 276 states and 336 transitions. Second operand 8 states. [2019-10-14 23:34:01,859 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:03,021 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:03,427 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:03,688 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:04,038 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:04,565 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:05,783 INFO L93 Difference]: Finished difference Result 897 states and 1167 transitions. [2019-10-14 23:34:05,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:05,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:34:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:05,791 INFO L225 Difference]: With dead ends: 897 [2019-10-14 23:34:05,791 INFO L226 Difference]: Without dead ends: 645 [2019-10-14 23:34:05,793 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 [2019-10-14 23:34:05,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2019-10-14 23:34:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 507. [2019-10-14 23:34:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-10-14 23:34:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 622 transitions. [2019-10-14 23:34:05,927 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 622 transitions. Word has length 57 [2019-10-14 23:34:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:05,927 INFO L462 AbstractCegarLoop]: Abstraction has 507 states and 622 transitions. [2019-10-14 23:34:05,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 622 transitions. [2019-10-14 23:34:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 23:34:05,931 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:05,931 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:34:05,931 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:05,932 INFO L82 PathProgramCache]: Analyzing trace with hash 431982967, now seen corresponding path program 1 times [2019-10-14 23:34:05,932 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:05,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475649348] [2019-10-14 23:34:05,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:05,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:05,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,240 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:06,336 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475649348] [2019-10-14 23:34:06,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:06,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:06,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146042788] [2019-10-14 23:34:06,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:06,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:06,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:06,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:06,338 INFO L87 Difference]: Start difference. First operand 507 states and 622 transitions. Second operand 9 states. [2019-10-14 23:34:06,956 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:08,050 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:08,344 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:08,630 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:09,360 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:09,642 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:10,829 INFO L93 Difference]: Finished difference Result 1445 states and 1936 transitions. [2019-10-14 23:34:10,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:34:10,829 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-14 23:34:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:10,839 INFO L225 Difference]: With dead ends: 1445 [2019-10-14 23:34:10,839 INFO L226 Difference]: Without dead ends: 962 [2019-10-14 23:34:10,842 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:34:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2019-10-14 23:34:11,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 775. [2019-10-14 23:34:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2019-10-14 23:34:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 951 transitions. [2019-10-14 23:34:11,113 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 951 transitions. Word has length 61 [2019-10-14 23:34:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:11,113 INFO L462 AbstractCegarLoop]: Abstraction has 775 states and 951 transitions. [2019-10-14 23:34:11,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 951 transitions. [2019-10-14 23:34:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 23:34:11,119 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:11,120 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] [2019-10-14 23:34:11,120 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:11,120 INFO L82 PathProgramCache]: Analyzing trace with hash -597595789, now seen corresponding path program 1 times [2019-10-14 23:34:11,121 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:11,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577072145] [2019-10-14 23:34:11,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:11,121 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:11,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,451 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:11,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577072145] [2019-10-14 23:34:11,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:11,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:11,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127311311] [2019-10-14 23:34:11,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:11,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:11,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:11,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:11,677 INFO L87 Difference]: Start difference. First operand 775 states and 951 transitions. Second operand 9 states. [2019-10-14 23:34:12,446 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:13,585 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:13,863 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:34:14,149 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:14,434 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:34:16,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:16,499 INFO L93 Difference]: Finished difference Result 2577 states and 3608 transitions. [2019-10-14 23:34:16,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:34:16,499 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2019-10-14 23:34:16,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:16,518 INFO L225 Difference]: With dead ends: 2577 [2019-10-14 23:34:16,519 INFO L226 Difference]: Without dead ends: 1826 [2019-10-14 23:34:16,522 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:34:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2019-10-14 23:34:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1403. [2019-10-14 23:34:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2019-10-14 23:34:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1706 transitions. [2019-10-14 23:34:16,786 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1706 transitions. Word has length 99 [2019-10-14 23:34:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:16,786 INFO L462 AbstractCegarLoop]: Abstraction has 1403 states and 1706 transitions. [2019-10-14 23:34:16,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1706 transitions. [2019-10-14 23:34:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 23:34:16,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:16,792 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] [2019-10-14 23:34:16,792 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:16,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:16,792 INFO L82 PathProgramCache]: Analyzing trace with hash -589836430, now seen corresponding path program 1 times [2019-10-14 23:34:16,793 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:16,793 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610704161] [2019-10-14 23:34:16,793 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:16,793 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:16,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,087 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:17,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610704161] [2019-10-14 23:34:17,205 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:17,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:17,205 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036347255] [2019-10-14 23:34:17,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:17,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:17,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:17,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:17,207 INFO L87 Difference]: Start difference. First operand 1403 states and 1706 transitions. Second operand 9 states. [2019-10-14 23:34:18,686 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:18,947 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:34:19,251 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:19,525 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:20,813 INFO L93 Difference]: Finished difference Result 3221 states and 4321 transitions. [2019-10-14 23:34:20,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:34:20,815 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2019-10-14 23:34:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:20,828 INFO L225 Difference]: With dead ends: 3221 [2019-10-14 23:34:20,828 INFO L226 Difference]: Without dead ends: 1842 [2019-10-14 23:34:20,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:34:20,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2019-10-14 23:34:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1443. [2019-10-14 23:34:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2019-10-14 23:34:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1746 transitions. [2019-10-14 23:34:21,125 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1746 transitions. Word has length 99 [2019-10-14 23:34:21,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:21,125 INFO L462 AbstractCegarLoop]: Abstraction has 1443 states and 1746 transitions. [2019-10-14 23:34:21,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:21,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1746 transitions. [2019-10-14 23:34:21,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 23:34:21,132 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:21,132 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] [2019-10-14 23:34:21,132 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:21,133 INFO L82 PathProgramCache]: Analyzing trace with hash 303649908, now seen corresponding path program 1 times [2019-10-14 23:34:21,133 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:21,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065204789] [2019-10-14 23:34:21,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:21,139 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:21,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,417 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:34:21,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065204789] [2019-10-14 23:34:21,550 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:21,550 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:34:21,551 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625282485] [2019-10-14 23:34:21,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:34:21,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:21,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:34:21,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:34:21,552 INFO L87 Difference]: Start difference. First operand 1443 states and 1746 transitions. Second operand 11 states. [2019-10-14 23:34:22,289 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:22,545 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:22,793 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:23,661 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:23,966 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:24,230 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:25,570 INFO L93 Difference]: Finished difference Result 2835 states and 3696 transitions. [2019-10-14 23:34:25,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:25,570 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2019-10-14 23:34:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:25,579 INFO L225 Difference]: With dead ends: 2835 [2019-10-14 23:34:25,579 INFO L226 Difference]: Without dead ends: 1416 [2019-10-14 23:34:25,584 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:34:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2019-10-14 23:34:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1153. [2019-10-14 23:34:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2019-10-14 23:34:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1370 transitions. [2019-10-14 23:34:25,836 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1370 transitions. Word has length 99 [2019-10-14 23:34:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:25,837 INFO L462 AbstractCegarLoop]: Abstraction has 1153 states and 1370 transitions. [2019-10-14 23:34:25,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:34:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1370 transitions. [2019-10-14 23:34:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-14 23:34:25,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:25,843 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] [2019-10-14 23:34:25,844 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1696809349, now seen corresponding path program 1 times [2019-10-14 23:34:25,845 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:25,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402502614] [2019-10-14 23:34:25,845 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:25,846 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:25,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,176 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:34:26,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402502614] [2019-10-14 23:34:26,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242612667] [2019-10-14 23:34:26,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:34:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:26,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:34:26,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:34:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:26,899 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:34:26,899 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-14 23:34:26,899 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709978001] [2019-10-14 23:34:26,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:26,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:26,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:26,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:26,901 INFO L87 Difference]: Start difference. First operand 1153 states and 1370 transitions. Second operand 8 states. [2019-10-14 23:34:27,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:27,522 INFO L93 Difference]: Finished difference Result 2256 states and 2696 transitions. [2019-10-14 23:34:27,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:34:27,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-14 23:34:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:27,532 INFO L225 Difference]: With dead ends: 2256 [2019-10-14 23:34:27,532 INFO L226 Difference]: Without dead ends: 1127 [2019-10-14 23:34:27,537 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states.