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_spec3_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:38:07,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:38:07,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:38:07,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:38:07,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:38:07,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:38:07,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:38:07,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:38:07,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:38:07,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:38:07,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:38:07,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:38:07,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:38:07,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:38:07,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:38:07,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:38:07,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:38:07,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:38:07,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:38:07,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:38:07,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:38:07,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:38:07,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:38:07,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:38:07,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:38:07,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:38:07,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:38:07,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:38:07,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:38:07,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:38:07,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:38:07,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:38:07,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:38:07,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:38:07,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:38:07,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:38:07,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:38:07,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:38:07,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:38:07,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:38:07,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:38:07,146 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 19:38:07,168 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:38:07,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:38:07,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:38:07,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:38:07,170 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:38:07,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:38:07,171 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:38:07,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:38:07,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:38:07,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:38:07,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:38:07,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:38:07,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:38:07,173 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:38:07,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:38:07,174 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:38:07,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:38:07,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:38:07,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:38:07,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:38:07,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:38:07,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:38:07,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:38:07,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:38:07,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:38:07,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:38:07,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:38:07,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:38:07,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:38:07,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:38:07,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:38:07,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:38:07,493 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:38:07,494 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:38:07,494 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c [2019-10-13 19:38:07,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0144d00d/e3c32936ceb142b1ab485fd42bbb59f6/FLAGbb3f7d4d4 [2019-10-13 19:38:08,073 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:38:08,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product58.cil.c [2019-10-13 19:38:08,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0144d00d/e3c32936ceb142b1ab485fd42bbb59f6/FLAGbb3f7d4d4 [2019-10-13 19:38:08,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0144d00d/e3c32936ceb142b1ab485fd42bbb59f6 [2019-10-13 19:38:08,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:38:08,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:38:08,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:38:08,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:38:08,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:38:08,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:08" (1/1) ... [2019-10-13 19:38:08,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7789f9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:08, skipping insertion in model container [2019-10-13 19:38:08,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:08" (1/1) ... [2019-10-13 19:38:08,373 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:38:08,417 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:38:08,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:38:08,901 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:38:09,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:38:09,076 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:38:09,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09 WrapperNode [2019-10-13 19:38:09,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:38:09,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:38:09,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:38:09,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:38:09,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09" (1/1) ... [2019-10-13 19:38:09,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09" (1/1) ... [2019-10-13 19:38:09,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09" (1/1) ... [2019-10-13 19:38:09,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09" (1/1) ... [2019-10-13 19:38:09,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09" (1/1) ... [2019-10-13 19:38:09,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09" (1/1) ... [2019-10-13 19:38:09,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09" (1/1) ... [2019-10-13 19:38:09,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:38:09,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:38:09,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:38:09,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:38:09,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09" (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 19:38:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:38:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:38:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:38:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:38:09,241 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:38:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:38:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:38:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:38:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:38:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:38:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:38:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:38:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:38:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:38:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:38:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:38:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:38:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:38:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:38:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:38:09,248 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:38:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:38:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:38:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:38:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:38:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:38:09,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:38:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:38:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:38:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:38:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:38:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:38:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:38:09,250 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:38:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:38:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:38:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:38:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:38:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:38:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:38:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:38:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:38:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:38:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:38:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:38:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:38:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:38:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:38:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:38:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:38:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:38:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:38:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:38:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:38:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:38:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:38:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:38:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:38:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:38:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:38:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:38:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:38:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:38:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:38:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:38:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:38:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:38:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:38:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:38:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:38:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:38:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:38:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:38:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:38:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:38:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:38:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:38:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:38:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:38:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:38:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:38:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:38:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:38:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:38:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:38:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:38:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:38:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:38:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:38:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:38:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:38:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:38:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:38:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:38:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:38:09,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:38:09,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:38:09,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:38:10,408 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:38:10,409 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:38:10,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:10 BoogieIcfgContainer [2019-10-13 19:38:10,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:38:10,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:38:10,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:38:10,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:38:10,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:38:08" (1/3) ... [2019-10-13 19:38:10,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2f3487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:10, skipping insertion in model container [2019-10-13 19:38:10,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:09" (2/3) ... [2019-10-13 19:38:10,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2f3487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:10, skipping insertion in model container [2019-10-13 19:38:10,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:10" (3/3) ... [2019-10-13 19:38:10,421 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product58.cil.c [2019-10-13 19:38:10,431 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:38:10,441 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:38:10,452 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:38:10,487 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:38:10,487 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:38:10,488 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:38:10,488 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:38:10,488 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:38:10,488 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:38:10,489 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:38:10,489 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:38:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-10-13 19:38:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:38:10,522 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:10,523 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] [2019-10-13 19:38:10,525 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:10,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:10,531 INFO L82 PathProgramCache]: Analyzing trace with hash -743083680, now seen corresponding path program 1 times [2019-10-13 19:38:10,538 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:10,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831412091] [2019-10-13 19:38:10,538 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:10,539 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:10,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,219 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,352 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 19:38:11,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831412091] [2019-10-13 19:38:11,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:11,354 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:38:11,354 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665990407] [2019-10-13 19:38:11,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:38:11,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:11,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:38:11,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:38:11,381 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2019-10-13 19:38:12,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:12,682 INFO L93 Difference]: Finished difference Result 344 states and 442 transitions. [2019-10-13 19:38:12,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:38:12,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:38:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:12,699 INFO L225 Difference]: With dead ends: 344 [2019-10-13 19:38:12,700 INFO L226 Difference]: Without dead ends: 185 [2019-10-13 19:38:12,705 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 19:38:12,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2019-10-13 19:38:12,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 150. [2019-10-13 19:38:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-13 19:38:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2019-10-13 19:38:12,797 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 52 [2019-10-13 19:38:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:12,798 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2019-10-13 19:38:12,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:38:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2019-10-13 19:38:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:38:12,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:12,803 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] [2019-10-13 19:38:12,803 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:12,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:12,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1294042386, now seen corresponding path program 1 times [2019-10-13 19:38:12,804 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:12,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612841879] [2019-10-13 19:38:12,804 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:12,804 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:12,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,160 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:13,221 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 19:38:13,222 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612841879] [2019-10-13 19:38:13,222 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:13,222 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:38:13,223 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922661424] [2019-10-13 19:38:13,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:38:13,225 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:13,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:38:13,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:38:13,225 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand 4 states. [2019-10-13 19:38:13,706 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:14,708 INFO L93 Difference]: Finished difference Result 273 states and 329 transitions. [2019-10-13 19:38:14,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:38:14,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:38:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:14,713 INFO L225 Difference]: With dead ends: 273 [2019-10-13 19:38:14,713 INFO L226 Difference]: Without dead ends: 169 [2019-10-13 19:38:14,716 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 19:38:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-10-13 19:38:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 141. [2019-10-13 19:38:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-13 19:38:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 163 transitions. [2019-10-13 19:38:14,755 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 163 transitions. Word has length 53 [2019-10-13 19:38:14,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:14,755 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 163 transitions. [2019-10-13 19:38:14,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:38:14,755 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 163 transitions. [2019-10-13 19:38:14,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:38:14,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:14,758 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] [2019-10-13 19:38:14,758 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:14,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:14,759 INFO L82 PathProgramCache]: Analyzing trace with hash 593618756, now seen corresponding path program 1 times [2019-10-13 19:38:14,759 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:14,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382114237] [2019-10-13 19:38:14,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,099 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:15,163 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 19:38:15,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382114237] [2019-10-13 19:38:15,163 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:15,164 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:15,164 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829853014] [2019-10-13 19:38:15,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:15,165 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:15,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:15,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:15,166 INFO L87 Difference]: Start difference. First operand 141 states and 163 transitions. Second operand 8 states. [2019-10-13 19:38:15,658 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:15,983 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:16,281 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:16,531 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:18,008 INFO L93 Difference]: Finished difference Result 286 states and 347 transitions. [2019-10-13 19:38:18,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:18,009 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-13 19:38:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:18,013 INFO L225 Difference]: With dead ends: 286 [2019-10-13 19:38:18,013 INFO L226 Difference]: Without dead ends: 169 [2019-10-13 19:38:18,014 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:18,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-10-13 19:38:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 141. [2019-10-13 19:38:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-13 19:38:18,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 162 transitions. [2019-10-13 19:38:18,050 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 162 transitions. Word has length 58 [2019-10-13 19:38:18,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:18,051 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 162 transitions. [2019-10-13 19:38:18,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 162 transitions. [2019-10-13 19:38:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-13 19:38:18,054 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:18,054 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:18,054 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:18,055 INFO L82 PathProgramCache]: Analyzing trace with hash -16856487, now seen corresponding path program 1 times [2019-10-13 19:38:18,055 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:18,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960922364] [2019-10-13 19:38:18,055 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:18,055 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:18,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,397 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:18,483 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 19:38:18,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960922364] [2019-10-13 19:38:18,484 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:18,484 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:38:18,485 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049290439] [2019-10-13 19:38:18,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:38:18,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:18,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:38:18,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:38:18,486 INFO L87 Difference]: Start difference. First operand 141 states and 162 transitions. Second operand 6 states. [2019-10-13 19:38:18,951 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:20,305 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:21,160 INFO L93 Difference]: Finished difference Result 395 states and 483 transitions. [2019-10-13 19:38:21,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:38:21,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-13 19:38:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:21,165 INFO L225 Difference]: With dead ends: 395 [2019-10-13 19:38:21,165 INFO L226 Difference]: Without dead ends: 278 [2019-10-13 19:38:21,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:38:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-13 19:38:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 235. [2019-10-13 19:38:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2019-10-13 19:38:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 267 transitions. [2019-10-13 19:38:21,219 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 267 transitions. Word has length 71 [2019-10-13 19:38:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:21,219 INFO L462 AbstractCegarLoop]: Abstraction has 235 states and 267 transitions. [2019-10-13 19:38:21,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:38:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 267 transitions. [2019-10-13 19:38:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-13 19:38:21,222 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:21,222 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:21,223 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:21,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1762317239, now seen corresponding path program 1 times [2019-10-13 19:38:21,223 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:21,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151667576] [2019-10-13 19:38:21,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:21,224 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:21,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,537 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,658 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 19:38:21,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151667576] [2019-10-13 19:38:21,659 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:21,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:21,660 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693917136] [2019-10-13 19:38:21,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:21,661 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:21,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:21,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:21,662 INFO L87 Difference]: Start difference. First operand 235 states and 267 transitions. Second operand 8 states. [2019-10-13 19:38:22,183 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:23,792 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:24,079 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:24,349 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:24,622 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:25,491 INFO L93 Difference]: Finished difference Result 630 states and 778 transitions. [2019-10-13 19:38:25,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:38:25,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2019-10-13 19:38:25,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:25,495 INFO L225 Difference]: With dead ends: 630 [2019-10-13 19:38:25,495 INFO L226 Difference]: Without dead ends: 419 [2019-10-13 19:38:25,497 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2019-10-13 19:38:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 376. [2019-10-13 19:38:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2019-10-13 19:38:25,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 435 transitions. [2019-10-13 19:38:25,571 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 435 transitions. Word has length 85 [2019-10-13 19:38:25,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:25,571 INFO L462 AbstractCegarLoop]: Abstraction has 376 states and 435 transitions. [2019-10-13 19:38:25,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 435 transitions. [2019-10-13 19:38:25,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:38:25,573 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:25,574 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:25,574 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:25,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:25,575 INFO L82 PathProgramCache]: Analyzing trace with hash 25171709, now seen corresponding path program 1 times [2019-10-13 19:38:25,575 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:25,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255656319] [2019-10-13 19:38:25,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:25,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:25,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,912 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:26,064 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 19:38:26,064 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255656319] [2019-10-13 19:38:26,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:26,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:38:26,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968237352] [2019-10-13 19:38:26,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:38:26,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:26,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:38:26,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:38:26,068 INFO L87 Difference]: Start difference. First operand 376 states and 435 transitions. Second operand 10 states. [2019-10-13 19:38:26,504 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:28,244 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:28,552 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:28,835 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:29,131 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:29,446 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:30,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:30,518 INFO L93 Difference]: Finished difference Result 855 states and 1072 transitions. [2019-10-13 19:38:30,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:38:30,521 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-13 19:38:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:30,527 INFO L225 Difference]: With dead ends: 855 [2019-10-13 19:38:30,527 INFO L226 Difference]: Without dead ends: 633 [2019-10-13 19:38:30,529 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:38:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-13 19:38:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 561. [2019-10-13 19:38:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2019-10-13 19:38:30,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 658 transitions. [2019-10-13 19:38:30,634 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 658 transitions. Word has length 89 [2019-10-13 19:38:30,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:30,635 INFO L462 AbstractCegarLoop]: Abstraction has 561 states and 658 transitions. [2019-10-13 19:38:30,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:38:30,635 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 658 transitions. [2019-10-13 19:38:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:38:30,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:30,638 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:30,638 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:30,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:30,639 INFO L82 PathProgramCache]: Analyzing trace with hash -897511874, now seen corresponding path program 1 times [2019-10-13 19:38:30,639 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:30,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251582467] [2019-10-13 19:38:30,639 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:30,639 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:30,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,935 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:31,031 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 19:38:31,031 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251582467] [2019-10-13 19:38:31,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:31,032 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:31,032 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439858947] [2019-10-13 19:38:31,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:31,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:31,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:31,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:31,033 INFO L87 Difference]: Start difference. First operand 561 states and 658 transitions. Second operand 8 states. [2019-10-13 19:38:32,083 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:32,338 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:32,624 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:33,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:33,953 INFO L93 Difference]: Finished difference Result 1032 states and 1257 transitions. [2019-10-13 19:38:33,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:33,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-13 19:38:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:33,965 INFO L225 Difference]: With dead ends: 1032 [2019-10-13 19:38:33,965 INFO L226 Difference]: Without dead ends: 621 [2019-10-13 19:38:33,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-10-13 19:38:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 561. [2019-10-13 19:38:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2019-10-13 19:38:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 657 transitions. [2019-10-13 19:38:34,101 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 657 transitions. Word has length 89 [2019-10-13 19:38:34,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:34,101 INFO L462 AbstractCegarLoop]: Abstraction has 561 states and 657 transitions. [2019-10-13 19:38:34,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:34,102 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 657 transitions. [2019-10-13 19:38:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:38:34,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:34,107 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:34,107 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:34,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1741517376, now seen corresponding path program 1 times [2019-10-13 19:38:34,108 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:34,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356121805] [2019-10-13 19:38:34,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:34,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:34,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,430 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:34,616 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 19:38:34,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356121805] [2019-10-13 19:38:34,625 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:34,626 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:38:34,626 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309662175] [2019-10-13 19:38:34,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:38:34,632 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:34,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:38:34,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:34,634 INFO L87 Difference]: Start difference. First operand 561 states and 657 transitions. Second operand 12 states. [2019-10-13 19:38:35,494 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:35,767 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:36,041 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:36,909 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:37,181 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:37,478 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:37,745 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:39,320 INFO L93 Difference]: Finished difference Result 1169 states and 1432 transitions. [2019-10-13 19:38:39,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:38:39,320 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-13 19:38:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:39,328 INFO L225 Difference]: With dead ends: 1169 [2019-10-13 19:38:39,328 INFO L226 Difference]: Without dead ends: 632 [2019-10-13 19:38:39,331 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:38:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-10-13 19:38:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 568. [2019-10-13 19:38:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-13 19:38:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 664 transitions. [2019-10-13 19:38:39,441 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 664 transitions. Word has length 89 [2019-10-13 19:38:39,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:39,442 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 664 transitions. [2019-10-13 19:38:39,442 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:38:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 664 transitions. [2019-10-13 19:38:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 19:38:39,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:39,446 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] [2019-10-13 19:38:39,446 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:39,447 INFO L82 PathProgramCache]: Analyzing trace with hash -124080585, now seen corresponding path program 1 times [2019-10-13 19:38:39,447 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:39,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941045499] [2019-10-13 19:38:39,447 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:39,447 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:39,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,745 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:39,986 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 19:38:39,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941045499] [2019-10-13 19:38:39,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18529471] [2019-10-13 19:38:39,990 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 19:38:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:40,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 19:38:40,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:38:40,411 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 19:38:40,412 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:38:40,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-13 19:38:40,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838118632] [2019-10-13 19:38:40,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:40,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:40,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:40,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:40,414 INFO L87 Difference]: Start difference. First operand 568 states and 664 transitions. Second operand 8 states. [2019-10-13 19:38:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:41,211 INFO L93 Difference]: Finished difference Result 1643 states and 1960 transitions. [2019-10-13 19:38:41,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:41,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2019-10-13 19:38:41,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:41,220 INFO L225 Difference]: With dead ends: 1643 [2019-10-13 19:38:41,220 INFO L226 Difference]: Without dead ends: 1099 [2019-10-13 19:38:41,223 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2019-10-13 19:38:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1096. [2019-10-13 19:38:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2019-10-13 19:38:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1284 transitions. [2019-10-13 19:38:41,537 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1284 transitions. Word has length 101 [2019-10-13 19:38:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:41,538 INFO L462 AbstractCegarLoop]: Abstraction has 1096 states and 1284 transitions. [2019-10-13 19:38:41,538 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1284 transitions. [2019-10-13 19:38:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 19:38:41,541 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:41,541 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] [2019-10-13 19:38:41,747 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:38:41,748 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:41,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:41,748 INFO L82 PathProgramCache]: Analyzing trace with hash 115613659, now seen corresponding path program 1 times [2019-10-13 19:38:41,748 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:41,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868423255] [2019-10-13 19:38:41,749 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:41,749 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:41,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,085 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:42,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868423255] [2019-10-13 19:38:42,241 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:42,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 19:38:42,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89865287] [2019-10-13 19:38:42,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:38:42,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:42,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:38:42,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:42,243 INFO L87 Difference]: Start difference. First operand 1096 states and 1284 transitions. Second operand 14 states. [2019-10-13 19:38:43,334 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:43,659 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:43,952 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:44,613 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:45,549 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:45,943 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188