/usr/bin/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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:04:47,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:04:48,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:04:48,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:04:48,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:04:48,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:04:48,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:04:48,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:04:48,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:04:48,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:04:48,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:04:48,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:04:48,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:04:48,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:04:48,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:04:48,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:04:48,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:04:48,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:04:48,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:04:48,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:04:48,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:04:48,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:04:48,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:04:48,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:04:48,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:04:48,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:04:48,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:04:48,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:04:48,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:04:48,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:04:48,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:04:48,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:04:48,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:04:48,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:04:48,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:04:48,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:04:48,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:04:48,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:04:48,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:04:48,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:04:48,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:04:48,090 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 [2019-11-06 22:04:48,110 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:04:48,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:04:48,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:04:48,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:04:48,112 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:04:48,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:04:48,117 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:04:48,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:04:48,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:04:48,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:04:48,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:04:48,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:04:48,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:04:48,118 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:04:48,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:04:48,118 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:04:48,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:04:48,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:04:48,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:04:48,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:04:48,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:04:48,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:04:48,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:04:48,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:04:48,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:04:48,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:04:48,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:04:48,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:04:48,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:04:48,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:04:48,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:04:48,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:04:48,443 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:04:48,443 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:04:48,444 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c [2019-11-06 22:04:48,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/280f74fc7/4766c8fd5ed8429b9b044f0bb663548f/FLAGc2a193b9f [2019-11-06 22:04:49,059 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:04:49,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product64.cil.c [2019-11-06 22:04:49,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/280f74fc7/4766c8fd5ed8429b9b044f0bb663548f/FLAGc2a193b9f [2019-11-06 22:04:49,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/280f74fc7/4766c8fd5ed8429b9b044f0bb663548f [2019-11-06 22:04:49,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:04:49,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:04:49,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:49,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:04:49,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:04:49,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:49" (1/1) ... [2019-11-06 22:04:49,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8cd29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:49, skipping insertion in model container [2019-11-06 22:04:49,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:04:49" (1/1) ... [2019-11-06 22:04:49,360 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:04:49,428 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:04:49,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:49,882 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:04:49,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:04:50,036 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:04:50,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50 WrapperNode [2019-11-06 22:04:50,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:04:50,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:04:50,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:04:50,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:04:50,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2019-11-06 22:04:50,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2019-11-06 22:04:50,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2019-11-06 22:04:50,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2019-11-06 22:04:50,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2019-11-06 22:04:50,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2019-11-06 22:04:50,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (1/1) ... [2019-11-06 22:04:50,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:04:50,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:04:50,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:04:50,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:04:50,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (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 [2019-11-06 22:04:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:04:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:04:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:04:50,179 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:04:50,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:04:50,180 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:04:50,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:04:50,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:04:50,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:50,181 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:04:50,181 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:04:50,182 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:04:50,182 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:50,183 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:04:50,183 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:04:50,185 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:04:50,185 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:04:50,185 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:04:50,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:04:50,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:04:50,185 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:04:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:04:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:04:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 22:04:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-11-06 22:04:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:50,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:04:50,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:04:50,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:04:50,188 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:04:50,189 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:04:50,189 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:04:50,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:04:50,189 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:04:50,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:04:50,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:04:50,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:04:50,190 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:04:50,190 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:04:50,190 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:04:50,190 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:04:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:04:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:04:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-11-06 22:04:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 22:04:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:04:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:04:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:04:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:04:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:04:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:04:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:04:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:04:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:04:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:04:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:04:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:04:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 22:04:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:04:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:04:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:04:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:04:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:04:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:04:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:04:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:04:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:04:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:04:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:04:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:04:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:04:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:04:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:04:50,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:04:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:04:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:04:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:04:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:04:50,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:04:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:04:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:04:51,231 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:04:51,232 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:04:51,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:51 BoogieIcfgContainer [2019-11-06 22:04:51,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:04:51,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:04:51,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:04:51,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:04:51,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:04:49" (1/3) ... [2019-11-06 22:04:51,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1cbfaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:51, skipping insertion in model container [2019-11-06 22:04:51,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:04:50" (2/3) ... [2019-11-06 22:04:51,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1cbfaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:04:51, skipping insertion in model container [2019-11-06 22:04:51,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:04:51" (3/3) ... [2019-11-06 22:04:51,243 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product64.cil.c [2019-11-06 22:04:51,253 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:04:51,263 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:04:51,275 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:04:51,308 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:04:51,308 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:04:51,308 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:04:51,308 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:04:51,309 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:04:51,309 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:04:51,309 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:04:51,309 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:04:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2019-11-06 22:04:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 22:04:51,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:51,343 INFO L410 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] [2019-11-06 22:04:51,345 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:51,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:51,350 INFO L82 PathProgramCache]: Analyzing trace with hash 22774911, now seen corresponding path program 1 times [2019-11-06 22:04:51,360 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:51,360 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065189707] [2019-11-06 22:04:51,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:51,999 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:52,081 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065189707] [2019-11-06 22:04:52,082 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:52,083 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:04:52,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467343682] [2019-11-06 22:04:52,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:04:52,093 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:52,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:04:52,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:04:52,116 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 3 states. [2019-11-06 22:04:53,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:53,530 INFO L93 Difference]: Finished difference Result 374 states and 484 transitions. [2019-11-06 22:04:53,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:04:53,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 22:04:53,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:53,553 INFO L225 Difference]: With dead ends: 374 [2019-11-06 22:04:53,553 INFO L226 Difference]: Without dead ends: 202 [2019-11-06 22:04:53,561 INFO L630 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 [2019-11-06 22:04:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-11-06 22:04:53,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 163. [2019-11-06 22:04:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2019-11-06 22:04:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2019-11-06 22:04:53,687 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 46 [2019-11-06 22:04:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:53,689 INFO L462 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2019-11-06 22:04:53,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:04:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2019-11-06 22:04:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 22:04:53,694 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:53,694 INFO L410 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] [2019-11-06 22:04:53,695 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1731168874, now seen corresponding path program 1 times [2019-11-06 22:04:53,696 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:53,697 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124213307] [2019-11-06 22:04:53,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,074 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:54,111 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124213307] [2019-11-06 22:04:54,111 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:54,111 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:04:54,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584075035] [2019-11-06 22:04:54,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:04:54,114 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:54,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:04:54,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:04:54,115 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 4 states. [2019-11-06 22:04:54,605 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:04:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:04:55,688 INFO L93 Difference]: Finished difference Result 297 states and 363 transitions. [2019-11-06 22:04:55,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:04:55,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 22:04:55,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:04:55,692 INFO L225 Difference]: With dead ends: 297 [2019-11-06 22:04:55,692 INFO L226 Difference]: Without dead ends: 186 [2019-11-06 22:04:55,694 INFO L630 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 [2019-11-06 22:04:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-11-06 22:04:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 154. [2019-11-06 22:04:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-11-06 22:04:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2019-11-06 22:04:55,739 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 47 [2019-11-06 22:04:55,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:04:55,739 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2019-11-06 22:04:55,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:04:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2019-11-06 22:04:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 22:04:55,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:04:55,742 INFO L410 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] [2019-11-06 22:04:55,742 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:04:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:04:55,743 INFO L82 PathProgramCache]: Analyzing trace with hash -976432514, now seen corresponding path program 1 times [2019-11-06 22:04:55,743 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:04:55,743 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633494404] [2019-11-06 22:04:55,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:04:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:56,099 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:04:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:04:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:04:56,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633494404] [2019-11-06 22:04:56,190 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:04:56,190 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 22:04:56,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018132447] [2019-11-06 22:04:56,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 22:04:56,191 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:04:56,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 22:04:56,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:04:56,192 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand 8 states. [2019-11-06 22:04:56,650 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:04:56,988 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:04:57,248 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:57,521 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:04:58,319 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:05:00,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:05:00,877 INFO L93 Difference]: Finished difference Result 525 states and 650 transitions. [2019-11-06 22:05:00,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:05:00,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-11-06 22:05:00,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:05:00,887 INFO L225 Difference]: With dead ends: 525 [2019-11-06 22:05:00,887 INFO L226 Difference]: Without dead ends: 395 [2019-11-06 22:05:00,888 INFO L630 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 [2019-11-06 22:05:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-11-06 22:05:00,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 322. [2019-11-06 22:05:00,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-11-06 22:05:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 390 transitions. [2019-11-06 22:05:00,977 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 390 transitions. Word has length 52 [2019-11-06 22:05:00,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:05:00,977 INFO L462 AbstractCegarLoop]: Abstraction has 322 states and 390 transitions. [2019-11-06 22:05:00,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 22:05:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 390 transitions. [2019-11-06 22:05:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:05:00,980 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:05:00,981 INFO L410 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] [2019-11-06 22:05:00,981 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:05:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:05:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1952402222, now seen corresponding path program 1 times [2019-11-06 22:05:00,982 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:05:00,982 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750033045] [2019-11-06 22:05:00,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:05:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:01,318 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:05:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:05:01,433 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750033045] [2019-11-06 22:05:01,434 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:05:01,434 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:05:01,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074225295] [2019-11-06 22:05:01,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:05:01,435 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:05:01,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:05:01,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:05:01,436 INFO L87 Difference]: Start difference. First operand 322 states and 390 transitions. Second operand 12 states. [2019-11-06 22:05:02,077 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:02,417 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:02,679 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:02,953 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:03,585 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:05:04,570 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:05,023 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:05,442 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:05,746 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:05:06,061 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:06,472 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:06,909 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:07,361 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:09,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:05:09,902 INFO L93 Difference]: Finished difference Result 1325 states and 1806 transitions. [2019-11-06 22:05:09,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 22:05:09,903 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2019-11-06 22:05:09,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:05:09,915 INFO L225 Difference]: With dead ends: 1325 [2019-11-06 22:05:09,916 INFO L226 Difference]: Without dead ends: 1027 [2019-11-06 22:05:09,919 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-11-06 22:05:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-11-06 22:05:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 922. [2019-11-06 22:05:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2019-11-06 22:05:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1176 transitions. [2019-11-06 22:05:10,148 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1176 transitions. Word has length 57 [2019-11-06 22:05:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:05:10,149 INFO L462 AbstractCegarLoop]: Abstraction has 922 states and 1176 transitions. [2019-11-06 22:05:10,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:05:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1176 transitions. [2019-11-06 22:05:10,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-06 22:05:10,153 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:05:10,153 INFO L410 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] [2019-11-06 22:05:10,154 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:05:10,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:05:10,154 INFO L82 PathProgramCache]: Analyzing trace with hash 474058772, now seen corresponding path program 1 times [2019-11-06 22:05:10,154 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:05:10,155 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474470397] [2019-11-06 22:05:10,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:05:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,453 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:05:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:05:10,574 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474470397] [2019-11-06 22:05:10,574 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:05:10,574 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:05:10,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044564942] [2019-11-06 22:05:10,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:05:10,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:05:10,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:05:10,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:05:10,576 INFO L87 Difference]: Start difference. First operand 922 states and 1176 transitions. Second operand 6 states. [2019-11-06 22:05:10,922 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:05:13,144 INFO L93 Difference]: Finished difference Result 2205 states and 2989 transitions. [2019-11-06 22:05:13,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-06 22:05:13,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2019-11-06 22:05:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:05:13,153 INFO L225 Difference]: With dead ends: 2205 [2019-11-06 22:05:13,154 INFO L226 Difference]: Without dead ends: 1307 [2019-11-06 22:05:13,158 INFO L630 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 [2019-11-06 22:05:13,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2019-11-06 22:05:13,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1216. [2019-11-06 22:05:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2019-11-06 22:05:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1510 transitions. [2019-11-06 22:05:13,391 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1510 transitions. Word has length 61 [2019-11-06 22:05:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:05:13,391 INFO L462 AbstractCegarLoop]: Abstraction has 1216 states and 1510 transitions. [2019-11-06 22:05:13,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:05:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1510 transitions. [2019-11-06 22:05:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-06 22:05:13,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:05:13,395 INFO L410 BasicCegarLoop]: trace histogram [2, 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] [2019-11-06 22:05:13,395 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:05:13,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:05:13,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1364424505, now seen corresponding path program 1 times [2019-11-06 22:05:13,396 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:05:13,396 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737113320] [2019-11-06 22:05:13,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:05:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,730 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 22:05:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-06 22:05:13,880 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737113320] [2019-11-06 22:05:13,880 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241426529] [2019-11-06 22:05:13,881 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 [2019-11-06 22:05:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:05:14,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-06 22:05:14,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:05:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:05:14,225 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:05:14,225 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2019-11-06 22:05:14,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541017022] [2019-11-06 22:05:14,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-06 22:05:14,226 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:05:14,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-06 22:05:14,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:05:14,227 INFO L87 Difference]: Start difference. First operand 1216 states and 1510 transitions. Second operand 15 states. [2019-11-06 22:05:14,930 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:15,669 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:16,501 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:05:18,153 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:05:18,588 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:20,063 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:20,324 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:20,875 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:21,912 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:22,335 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:22,660 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:22,954 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:23,403 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:23,784 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:24,791 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:25,202 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 22:05:25,455 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:05:25,890 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:05:26,531 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:26,810 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 22:05:27,169 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:27,508 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:05:28,364 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190