java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:36:48,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:36:48,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:36:48,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:36:48,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:36:48,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:36:48,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:36:48,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:36:48,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:36:48,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:36:48,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:36:48,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:36:48,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:36:48,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:36:48,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:36:48,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:36:48,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:36:48,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:36:48,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:36:48,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:36:48,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:36:48,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:36:48,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:36:48,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:36:48,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:36:48,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:36:48,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:36:48,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:36:48,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:36:48,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:36:48,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:36:48,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:36:48,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:36:48,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:36:48,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:36:48,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:36:48,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:36:48,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:36:48,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:36:48,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:36:48,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:36:48,153 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 19:36:48,171 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:36:48,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:36:48,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:36:48,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:36:48,172 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:36:48,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:36:48,173 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:36:48,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:36:48,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:36:48,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:36:48,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:36:48,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:36:48,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:36:48,174 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:36:48,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:36:48,175 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:36:48,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:36:48,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:36:48,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:36:48,176 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:36:48,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:36:48,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:36:48,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:36:48,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:36:48,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:36:48,177 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:36:48,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:36:48,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:36:48,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:36:48,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:36:48,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:36:48,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:36:48,453 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:36:48,453 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:36:48,454 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product52.cil.c [2019-10-13 19:36:48,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37099f752/3dff558bb755441285493cdd9f0194bd/FLAGf04477902 [2019-10-13 19:36:49,105 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:36:49,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product52.cil.c [2019-10-13 19:36:49,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37099f752/3dff558bb755441285493cdd9f0194bd/FLAGf04477902 [2019-10-13 19:36:49,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37099f752/3dff558bb755441285493cdd9f0194bd [2019-10-13 19:36:49,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:36:49,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:36:49,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:49,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:36:49,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:36:49,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:49" (1/1) ... [2019-10-13 19:36:49,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f6a702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:49, skipping insertion in model container [2019-10-13 19:36:49,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:49" (1/1) ... [2019-10-13 19:36:49,398 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:36:49,456 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:36:49,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:49,879 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:36:49,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:50,005 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:36:50,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50 WrapperNode [2019-10-13 19:36:50,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:50,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:36:50,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:36:50,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:36:50,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50" (1/1) ... [2019-10-13 19:36:50,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50" (1/1) ... [2019-10-13 19:36:50,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50" (1/1) ... [2019-10-13 19:36:50,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50" (1/1) ... [2019-10-13 19:36:50,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50" (1/1) ... [2019-10-13 19:36:50,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50" (1/1) ... [2019-10-13 19:36:50,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50" (1/1) ... [2019-10-13 19:36:50,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:36:50,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:36:50,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:36:50,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:36:50,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50" (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 [2019-10-13 19:36:50,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:36:50,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:36:50,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:50,165 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:36:50,165 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:36:50,165 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:36:50,165 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:36:50,165 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:36:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:36:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:36:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:36:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:36:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:36:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:36:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:36:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:36:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:36:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:36:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:36:50,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:36:50,168 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:36:50,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:36:50,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:50,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:50,168 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:36:50,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:36:50,169 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:36:50,169 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:36:50,169 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:36:50,169 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:36:50,169 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:36:50,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:36:50,170 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:36:50,170 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:36:50,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:36:50,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:36:50,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:50,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:50,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:50,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:36:50,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:36:50,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:36:50,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:36:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:36:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:36:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:36:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:36:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:36:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:36:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:36:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:36:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:36:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:36:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:36:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:36:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:36:50,173 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:36:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:36:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:36:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:36:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:36:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:36:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:50,174 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:36:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:36:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:36:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:36:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:36:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:36:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:36:50,175 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:36:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:36:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:36:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:36:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:36:50,176 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:36:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:36:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:36:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:36:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:36:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:36:50,177 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:36:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:36:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:36:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:36:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:36:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:36:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:36:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:36:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:36:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:36:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:36:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:36:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:36:50,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:36:51,245 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:36:51,245 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:36:51,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:51 BoogieIcfgContainer [2019-10-13 19:36:51,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:36:51,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:36:51,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:36:51,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:36:51,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:49" (1/3) ... [2019-10-13 19:36:51,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446bd665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:51, skipping insertion in model container [2019-10-13 19:36:51,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:50" (2/3) ... [2019-10-13 19:36:51,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446bd665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:51, skipping insertion in model container [2019-10-13 19:36:51,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:51" (3/3) ... [2019-10-13 19:36:51,259 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product52.cil.c [2019-10-13 19:36:51,269 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:36:51,281 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:36:51,292 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:36:51,332 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:36:51,332 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:36:51,332 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:36:51,333 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:36:51,333 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:36:51,334 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:36:51,334 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:36:51,334 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:36:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-10-13 19:36:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:36:51,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:51,372 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:36:51,374 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:51,378 INFO L82 PathProgramCache]: Analyzing trace with hash 422856307, now seen corresponding path program 1 times [2019-10-13 19:36:51,388 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:51,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695445737] [2019-10-13 19:36:51,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:51,389 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:51,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,094 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,210 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 19:36:52,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695445737] [2019-10-13 19:36:52,212 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:52,212 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:36:52,212 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86112359] [2019-10-13 19:36:52,217 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:36:52,218 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:52,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:36:52,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:52,235 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2019-10-13 19:36:53,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:53,481 INFO L93 Difference]: Finished difference Result 321 states and 418 transitions. [2019-10-13 19:36:53,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:36:53,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-13 19:36:53,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:53,513 INFO L225 Difference]: With dead ends: 321 [2019-10-13 19:36:53,513 INFO L226 Difference]: Without dead ends: 179 [2019-10-13 19:36:53,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:53,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2019-10-13 19:36:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 143. [2019-10-13 19:36:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-10-13 19:36:53,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2019-10-13 19:36:53,628 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 51 [2019-10-13 19:36:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:53,628 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2019-10-13 19:36:53,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:36:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2019-10-13 19:36:53,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:36:53,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:53,632 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 19:36:53,633 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:53,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:53,633 INFO L82 PathProgramCache]: Analyzing trace with hash 83135735, now seen corresponding path program 1 times [2019-10-13 19:36:53,633 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:53,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82562745] [2019-10-13 19:36:53,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:53,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:53,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,014 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:54,092 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 19:36:54,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82562745] [2019-10-13 19:36:54,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:54,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:36:54,093 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391771076] [2019-10-13 19:36:54,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:36:54,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:54,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:36:54,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:36:54,096 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 5 states. [2019-10-13 19:36:54,574 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:55,556 INFO L93 Difference]: Finished difference Result 256 states and 317 transitions. [2019-10-13 19:36:55,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:36:55,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-13 19:36:55,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:55,561 INFO L225 Difference]: With dead ends: 256 [2019-10-13 19:36:55,561 INFO L226 Difference]: Without dead ends: 169 [2019-10-13 19:36:55,563 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:36:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-10-13 19:36:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2019-10-13 19:36:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-13 19:36:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 156 transitions. [2019-10-13 19:36:55,598 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 156 transitions. Word has length 52 [2019-10-13 19:36:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:55,598 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 156 transitions. [2019-10-13 19:36:55,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:36:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2019-10-13 19:36:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:36:55,601 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:55,601 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:36:55,601 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:55,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:55,602 INFO L82 PathProgramCache]: Analyzing trace with hash 522733086, now seen corresponding path program 1 times [2019-10-13 19:36:55,602 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:55,602 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105279765] [2019-10-13 19:36:55,602 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:55,603 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:55,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:55,948 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,050 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 19:36:56,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105279765] [2019-10-13 19:36:56,051 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:56,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:36:56,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141737001] [2019-10-13 19:36:56,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:36:56,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:56,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:36:56,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:36:56,053 INFO L87 Difference]: Start difference. First operand 134 states and 156 transitions. Second operand 9 states. [2019-10-13 19:36:56,488 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:56,863 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:57,145 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:57,409 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:58,348 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:00,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:00,584 INFO L93 Difference]: Finished difference Result 454 states and 571 transitions. [2019-10-13 19:37:00,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:37:00,584 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-13 19:37:00,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:00,590 INFO L225 Difference]: With dead ends: 454 [2019-10-13 19:37:00,591 INFO L226 Difference]: Without dead ends: 348 [2019-10-13 19:37:00,592 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:37:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2019-10-13 19:37:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 279. [2019-10-13 19:37:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-10-13 19:37:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 338 transitions. [2019-10-13 19:37:00,666 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 338 transitions. Word has length 57 [2019-10-13 19:37:00,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:00,666 INFO L462 AbstractCegarLoop]: Abstraction has 279 states and 338 transitions. [2019-10-13 19:37:00,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:37:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 338 transitions. [2019-10-13 19:37:00,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-13 19:37:00,669 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:00,670 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:00,670 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:00,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:00,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1095308141, now seen corresponding path program 1 times [2019-10-13 19:37:00,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:00,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273086837] [2019-10-13 19:37:00,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:00,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:00,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,015 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,148 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 19:37:01,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273086837] [2019-10-13 19:37:01,150 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:01,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:37:01,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279250611] [2019-10-13 19:37:01,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:37:01,151 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:01,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:37:01,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:37:01,152 INFO L87 Difference]: Start difference. First operand 279 states and 338 transitions. Second operand 9 states. [2019-10-13 19:37:01,760 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:03,074 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:03,500 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:03,865 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:04,223 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:05,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:05,715 INFO L93 Difference]: Finished difference Result 894 states and 1182 transitions. [2019-10-13 19:37:05,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:37:05,717 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-13 19:37:05,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:05,726 INFO L225 Difference]: With dead ends: 894 [2019-10-13 19:37:05,727 INFO L226 Difference]: Without dead ends: 643 [2019-10-13 19:37:05,729 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:37:05,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2019-10-13 19:37:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 506. [2019-10-13 19:37:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2019-10-13 19:37:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 616 transitions. [2019-10-13 19:37:05,853 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 616 transitions. Word has length 62 [2019-10-13 19:37:05,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:05,853 INFO L462 AbstractCegarLoop]: Abstraction has 506 states and 616 transitions. [2019-10-13 19:37:05,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:37:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 616 transitions. [2019-10-13 19:37:05,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-13 19:37:05,857 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:05,857 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:05,858 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:05,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:05,858 INFO L82 PathProgramCache]: Analyzing trace with hash -656052983, now seen corresponding path program 1 times [2019-10-13 19:37:05,858 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:05,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603049733] [2019-10-13 19:37:05,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:05,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:05,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,166 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:06,261 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 19:37:06,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603049733] [2019-10-13 19:37:06,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:06,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:06,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779938443] [2019-10-13 19:37:06,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:06,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:06,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:06,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:06,264 INFO L87 Difference]: Start difference. First operand 506 states and 616 transitions. Second operand 10 states. [2019-10-13 19:37:06,698 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:07,927 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:08,233 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:08,552 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:09,226 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:10,655 INFO L93 Difference]: Finished difference Result 1413 states and 1930 transitions. [2019-10-13 19:37:10,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 19:37:10,658 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-13 19:37:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:10,665 INFO L225 Difference]: With dead ends: 1413 [2019-10-13 19:37:10,665 INFO L226 Difference]: Without dead ends: 935 [2019-10-13 19:37:10,668 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:37:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2019-10-13 19:37:10,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 729. [2019-10-13 19:37:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2019-10-13 19:37:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 883 transitions. [2019-10-13 19:37:10,830 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 883 transitions. Word has length 66 [2019-10-13 19:37:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:10,831 INFO L462 AbstractCegarLoop]: Abstraction has 729 states and 883 transitions. [2019-10-13 19:37:10,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 883 transitions. [2019-10-13 19:37:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:37:10,833 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:10,834 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 19:37:10,834 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:10,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:10,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1934115710, now seen corresponding path program 1 times [2019-10-13 19:37:10,835 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:10,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929764013] [2019-10-13 19:37:10,835 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:10,835 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:10,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,099 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:11,232 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 19:37:11,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929764013] [2019-10-13 19:37:11,233 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:11,233 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:11,233 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453983579] [2019-10-13 19:37:11,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:11,234 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:11,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:11,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:11,235 INFO L87 Difference]: Start difference. First operand 729 states and 883 transitions. Second operand 10 states. [2019-10-13 19:37:12,512 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:12,817 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:37:13,120 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:13,405 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:14,712 INFO L93 Difference]: Finished difference Result 1710 states and 2278 transitions. [2019-10-13 19:37:14,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:37:14,713 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-13 19:37:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:14,725 INFO L225 Difference]: With dead ends: 1710 [2019-10-13 19:37:14,725 INFO L226 Difference]: Without dead ends: 1009 [2019-10-13 19:37:14,728 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:37:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2019-10-13 19:37:14,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 755. [2019-10-13 19:37:14,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2019-10-13 19:37:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 911 transitions. [2019-10-13 19:37:14,919 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 911 transitions. Word has length 89 [2019-10-13 19:37:14,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:14,919 INFO L462 AbstractCegarLoop]: Abstraction has 755 states and 911 transitions. [2019-10-13 19:37:14,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 911 transitions. [2019-10-13 19:37:14,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:37:14,922 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:14,923 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 19:37:14,923 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:14,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:14,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1232515836, now seen corresponding path program 1 times [2019-10-13 19:37:14,923 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:14,924 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442553467] [2019-10-13 19:37:14,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:14,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:14,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,232 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,398 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 19:37:15,399 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442553467] [2019-10-13 19:37:15,400 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:15,400 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:37:15,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408437375] [2019-10-13 19:37:15,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:37:15,401 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:15,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:37:15,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:15,402 INFO L87 Difference]: Start difference. First operand 755 states and 911 transitions. Second operand 12 states. [2019-10-13 19:37:16,179 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:16,458 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:16,766 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:17,750 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:18,074 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:18,367 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:19,660 INFO L93 Difference]: Finished difference Result 1764 states and 2387 transitions. [2019-10-13 19:37:19,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:37:19,661 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-13 19:37:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:19,669 INFO L225 Difference]: With dead ends: 1764 [2019-10-13 19:37:19,669 INFO L226 Difference]: Without dead ends: 1037 [2019-10-13 19:37:19,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:37:19,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2019-10-13 19:37:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 771. [2019-10-13 19:37:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2019-10-13 19:37:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 927 transitions. [2019-10-13 19:37:19,845 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 927 transitions. Word has length 89 [2019-10-13 19:37:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:19,847 INFO L462 AbstractCegarLoop]: Abstraction has 771 states and 927 transitions. [2019-10-13 19:37:19,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:37:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 927 transitions. [2019-10-13 19:37:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:37:19,849 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:19,849 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 19:37:19,850 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:19,850 INFO L82 PathProgramCache]: Analyzing trace with hash 492965061, now seen corresponding path program 1 times [2019-10-13 19:37:19,850 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:19,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908830128] [2019-10-13 19:37:19,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:19,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:19,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,145 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:20,271 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 19:37:20,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908830128] [2019-10-13 19:37:20,272 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:20,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:20,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484086519] [2019-10-13 19:37:20,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:20,273 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:20,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:20,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:20,273 INFO L87 Difference]: Start difference. First operand 771 states and 927 transitions. Second operand 8 states. [2019-10-13 19:37:20,699 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:21,356 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:24,325 INFO L93 Difference]: Finished difference Result 2695 states and 3681 transitions. [2019-10-13 19:37:24,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 19:37:24,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-13 19:37:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:24,340 INFO L225 Difference]: With dead ends: 2695 [2019-10-13 19:37:24,340 INFO L226 Difference]: Without dead ends: 1952 [2019-10-13 19:37:24,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-13 19:37:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1952 states. [2019-10-13 19:37:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1952 to 1595. [2019-10-13 19:37:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1595 states. [2019-10-13 19:37:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 1941 transitions. [2019-10-13 19:37:24,740 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 1941 transitions. Word has length 89 [2019-10-13 19:37:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:24,740 INFO L462 AbstractCegarLoop]: Abstraction has 1595 states and 1941 transitions. [2019-10-13 19:37:24,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 1941 transitions. [2019-10-13 19:37:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 19:37:24,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:24,746 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:24,747 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:24,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1931984341, now seen corresponding path program 1 times [2019-10-13 19:37:24,747 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:24,748 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039371064] [2019-10-13 19:37:24,748 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:24,748 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:24,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,108 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:25,224 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 19:37:25,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039371064] [2019-10-13 19:37:25,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:25,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:25,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832111643] [2019-10-13 19:37:25,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:25,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:25,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:25,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:25,227 INFO L87 Difference]: Start difference. First operand 1595 states and 1941 transitions. Second operand 8 states. [2019-10-13 19:37:25,638 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:28,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:28,564 INFO L93 Difference]: Finished difference Result 3247 states and 4460 transitions. [2019-10-13 19:37:28,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 19:37:28,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2019-10-13 19:37:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:28,586 INFO L225 Difference]: With dead ends: 3247 [2019-10-13 19:37:28,586 INFO L226 Difference]: Without dead ends: 3244 [2019-10-13 19:37:28,589 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:37:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states.