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_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:40:19,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:40:19,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:40:19,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:40:19,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:40:19,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:40:19,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:40:19,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:40:19,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:40:19,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:40:19,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:40:19,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:40:19,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:40:19,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:40:19,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:40:19,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:40:19,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:40:19,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:40:19,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:40:19,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:40:19,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:40:19,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:40:19,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:40:19,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:40:19,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:40:19,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:40:19,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:40:19,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:40:19,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:40:19,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:40:19,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:40:19,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:40:19,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:40:19,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:40:19,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:40:19,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:40:19,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:40:19,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:40:19,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:40:19,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:40:19,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:40:19,144 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 19:40:19,165 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:40:19,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:40:19,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:40:19,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:40:19,168 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:40:19,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:40:19,168 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:40:19,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:40:19,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:40:19,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:40:19,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:40:19,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:40:19,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:40:19,171 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:40:19,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:40:19,171 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:40:19,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:40:19,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:40:19,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:40:19,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:40:19,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:40:19,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:40:19,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:40:19,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:40:19,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:40:19,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:40:19,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:40:19,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:40:19,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:40:19,477 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:40:19,496 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:40:19,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:40:19,503 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:40:19,503 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:40:19,504 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-10-13 19:40:19,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e08169d/7af2121ada5b479981a6cec02e0d1840/FLAGcb63bbed1 [2019-10-13 19:40:20,081 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:40:20,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2019-10-13 19:40:20,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e08169d/7af2121ada5b479981a6cec02e0d1840/FLAGcb63bbed1 [2019-10-13 19:40:20,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e08169d/7af2121ada5b479981a6cec02e0d1840 [2019-10-13 19:40:20,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:40:20,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:40:20,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:40:20,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:40:20,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:40:20,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:20" (1/1) ... [2019-10-13 19:40:20,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4753c9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20, skipping insertion in model container [2019-10-13 19:40:20,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:20" (1/1) ... [2019-10-13 19:40:20,357 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:40:20,419 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:40:20,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:40:20,816 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:40:20,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:40:20,981 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:40:20,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20 WrapperNode [2019-10-13 19:40:20,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:40:20,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:40:20,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:40:20,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:40:20,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2019-10-13 19:40:20,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2019-10-13 19:40:21,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2019-10-13 19:40:21,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2019-10-13 19:40:21,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2019-10-13 19:40:21,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2019-10-13 19:40:21,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (1/1) ... [2019-10-13 19:40:21,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:40:21,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:40:21,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:40:21,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:40:21,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (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 19:40:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:40:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:40:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:40:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:40:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:40:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:40:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:40:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:40:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:40:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:40:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:40:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:40:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:40:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:40:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:40:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:40:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:40:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:40:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:40:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:40:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:40:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:40:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:40:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:40:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:40:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:40:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:40:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:40:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:40:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:40:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:40:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:40:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:40:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:40:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:40:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:40:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:40:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:40:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:40:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:40:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:40:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:40:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:40:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:40:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:40:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:40:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:40:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:40:21,159 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:40:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:40:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:40:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:40:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:40:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:40:21,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:40:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:40:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:40:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:40:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:40:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:40:21,161 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:40:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:40:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:40:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:40:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:40:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:40:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:40:21,162 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:40:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:40:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:40:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:40:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:40:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:40:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:40:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:40:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:40:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:40:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:40:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:40:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:40:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:40:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:40:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:40:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:40:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:40:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:40:21,165 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:40:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:40:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:40:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:40:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:40:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:40:21,166 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:40:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:40:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:40:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:40:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:40:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:40:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:40:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:40:22,172 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:40:22,173 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:40:22,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:22 BoogieIcfgContainer [2019-10-13 19:40:22,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:40:22,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:40:22,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:40:22,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:40:22,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:20" (1/3) ... [2019-10-13 19:40:22,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe1c3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:22, skipping insertion in model container [2019-10-13 19:40:22,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:20" (2/3) ... [2019-10-13 19:40:22,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe1c3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:22, skipping insertion in model container [2019-10-13 19:40:22,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:22" (3/3) ... [2019-10-13 19:40:22,183 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2019-10-13 19:40:22,194 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:40:22,203 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:40:22,214 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:40:22,239 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:40:22,240 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:40:22,240 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:40:22,240 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:40:22,241 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:40:22,241 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:40:22,241 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:40:22,241 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:40:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2019-10-13 19:40:22,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:40:22,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:22,274 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:22,276 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:22,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2019-10-13 19:40:22,291 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:22,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246357327] [2019-10-13 19:40:22,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:22,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:22,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,906 WARN L191 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:23,022 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 19:40:23,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246357327] [2019-10-13 19:40:23,024 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:23,024 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:40:23,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230376361] [2019-10-13 19:40:23,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:40:23,029 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:23,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:40:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:40:23,047 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2019-10-13 19:40:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:24,403 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2019-10-13 19:40:24,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:40:24,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:40:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:24,431 INFO L225 Difference]: With dead ends: 365 [2019-10-13 19:40:24,431 INFO L226 Difference]: Without dead ends: 197 [2019-10-13 19:40:24,438 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:40:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-10-13 19:40:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2019-10-13 19:40:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-10-13 19:40:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2019-10-13 19:40:24,553 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2019-10-13 19:40:24,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:24,553 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2019-10-13 19:40:24,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:40:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2019-10-13 19:40:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:40:24,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:24,565 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:24,565 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:24,566 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2019-10-13 19:40:24,566 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:24,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103303020] [2019-10-13 19:40:24,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:24,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:24,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,966 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:25,000 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 19:40:25,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103303020] [2019-10-13 19:40:25,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:25,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:40:25,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048332733] [2019-10-13 19:40:25,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:40:25,003 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:25,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:40:25,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:40:25,004 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2019-10-13 19:40:25,508 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:26,528 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2019-10-13 19:40:26,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:26,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:40:26,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:26,533 INFO L225 Difference]: With dead ends: 292 [2019-10-13 19:40:26,536 INFO L226 Difference]: Without dead ends: 181 [2019-10-13 19:40:26,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:40:26,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-10-13 19:40:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2019-10-13 19:40:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-13 19:40:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2019-10-13 19:40:26,581 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2019-10-13 19:40:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:26,582 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2019-10-13 19:40:26,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:40:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2019-10-13 19:40:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:40:26,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:26,584 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 19:40:26,584 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:26,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:26,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2019-10-13 19:40:26,585 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:26,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962697772] [2019-10-13 19:40:26,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:26,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:26,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,898 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:26,988 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 19:40:26,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962697772] [2019-10-13 19:40:26,988 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:26,988 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:40:26,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770466447] [2019-10-13 19:40:26,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:40:26,989 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:26,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:40:26,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:40:26,990 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2019-10-13 19:40:27,434 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:27,764 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:28,029 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:28,305 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:29,063 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:31,321 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2019-10-13 19:40:31,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:40:31,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:40:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:31,327 INFO L225 Difference]: With dead ends: 510 [2019-10-13 19:40:31,327 INFO L226 Difference]: Without dead ends: 384 [2019-10-13 19:40:31,328 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:40:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2019-10-13 19:40:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2019-10-13 19:40:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-10-13 19:40:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2019-10-13 19:40:31,406 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2019-10-13 19:40:31,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:31,406 INFO L462 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2019-10-13 19:40:31,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2019-10-13 19:40:31,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:40:31,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:31,409 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 19:40:31,409 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:31,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:31,409 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2019-10-13 19:40:31,409 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:31,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77146350] [2019-10-13 19:40:31,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:31,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:31,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,752 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,894 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 19:40:31,894 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77146350] [2019-10-13 19:40:31,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:31,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:40:31,895 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866551395] [2019-10-13 19:40:31,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:40:31,895 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:31,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:40:31,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:31,896 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2019-10-13 19:40:32,534 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:32,866 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:33,133 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:33,386 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:34,001 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:34,906 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:35,370 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:35,743 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:36,022 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:36,353 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:36,753 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:37,206 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:37,665 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:40,090 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2019-10-13 19:40:40,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:40:40,090 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-10-13 19:40:40,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:40,100 INFO L225 Difference]: With dead ends: 1305 [2019-10-13 19:40:40,100 INFO L226 Difference]: Without dead ends: 1011 [2019-10-13 19:40:40,102 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:40:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2019-10-13 19:40:40,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2019-10-13 19:40:40,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2019-10-13 19:40:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2019-10-13 19:40:40,368 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2019-10-13 19:40:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:40,369 INFO L462 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2019-10-13 19:40:40,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:40:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2019-10-13 19:40:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:40:40,373 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:40,374 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:40,376 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:40,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:40,376 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2019-10-13 19:40:40,376 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:40,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141736666] [2019-10-13 19:40:40,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:40,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:40,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,672 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,750 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 19:40:40,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141736666] [2019-10-13 19:40:40,750 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:40,750 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:40:40,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659957552] [2019-10-13 19:40:40,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:40,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:40,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:40,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:40:40,752 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2019-10-13 19:40:41,180 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:43,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:43,252 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2019-10-13 19:40:43,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:40:43,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-10-13 19:40:43,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:43,266 INFO L225 Difference]: With dead ends: 2165 [2019-10-13 19:40:43,266 INFO L226 Difference]: Without dead ends: 1279 [2019-10-13 19:40:43,272 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2019-10-13 19:40:43,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2019-10-13 19:40:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2019-10-13 19:40:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2019-10-13 19:40:43,672 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2019-10-13 19:40:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:43,673 INFO L462 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2019-10-13 19:40:43,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2019-10-13 19:40:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:40:43,683 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:43,683 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:40:43,684 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:43,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:43,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2019-10-13 19:40:43,684 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:43,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262232687] [2019-10-13 19:40:43,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:43,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:43,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,076 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:40:44,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262232687] [2019-10-13 19:40:44,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654943663] [2019-10-13 19:40:44,187 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 19:40:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:40:44,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:40:44,512 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:44,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-10-13 19:40:44,513 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608081452] [2019-10-13 19:40:44,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 19:40:44,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:44,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 19:40:44,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:44,515 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 15 states. [2019-10-13 19:40:45,049 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:45,778 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:46,639 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:48,303 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:48,749 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:49,945 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:50,252 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:50,779 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:51,692 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:52,095 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:52,410 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:52,704 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:53,163 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:53,499 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:54,270 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:54,611 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:54,981 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:55,223 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:55,639 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:55,921 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:56,297 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:56,577 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:57,055 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:57,336 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:57,722 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:58,007 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:58,782 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:59,080 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:59,343 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190