/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_spec5_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:08:32,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:08:32,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:08:32,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:08:32,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:08:32,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:08:32,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:08:32,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:08:32,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:08:32,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:08:32,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:08:32,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:08:32,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:08:32,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:08:32,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:08:32,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:08:32,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:08:32,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:08:32,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:08:32,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:08:32,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:08:32,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:08:32,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:08:32,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:08:32,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:08:32,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:08:32,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:08:32,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:08:32,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:08:32,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:08:32,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:08:32,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:08:32,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:08:32,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:08:32,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:08:32,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:08:32,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:08:32,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:08:32,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:08:32,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:08:32,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:08:32,339 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 22:08:32,354 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:08:32,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:08:32,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:08:32,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:08:32,355 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:08:32,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:08:32,356 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:08:32,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:08:32,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:08:32,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:08:32,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:08:32,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:08:32,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:08:32,357 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:08:32,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:08:32,358 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:08:32,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:08:32,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:08:32,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:08:32,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:08:32,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:08:32,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:08:32,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:08:32,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:08:32,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:08:32,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:08:32,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:08:32,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:08:32,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:08:32,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:08:32,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:08:32,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:08:32,654 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:08:32,655 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:08:32,656 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-11-06 22:08:32,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44fcb65f6/d87517ce1a1f4479a1da814e244ec67a/FLAGa6262648c [2019-11-06 22:08:33,232 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:08:33,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-11-06 22:08:33,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44fcb65f6/d87517ce1a1f4479a1da814e244ec67a/FLAGa6262648c [2019-11-06 22:08:33,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44fcb65f6/d87517ce1a1f4479a1da814e244ec67a [2019-11-06 22:08:33,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:08:33,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:08:33,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:08:33,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:08:33,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:08:33,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:33" (1/1) ... [2019-11-06 22:08:33,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577ee990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:33, skipping insertion in model container [2019-11-06 22:08:33,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:08:33" (1/1) ... [2019-11-06 22:08:33,592 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:08:33,642 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:08:34,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:08:34,118 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:08:34,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:08:34,250 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:08:34,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34 WrapperNode [2019-11-06 22:08:34,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:08:34,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:08:34,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:08:34,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:08:34,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34" (1/1) ... [2019-11-06 22:08:34,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34" (1/1) ... [2019-11-06 22:08:34,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34" (1/1) ... [2019-11-06 22:08:34,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34" (1/1) ... [2019-11-06 22:08:34,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34" (1/1) ... [2019-11-06 22:08:34,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34" (1/1) ... [2019-11-06 22:08:34,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34" (1/1) ... [2019-11-06 22:08:34,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:08:34,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:08:34,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:08:34,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:08:34,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34" (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 22:08:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:08:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:08:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 22:08:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 22:08:34,434 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 22:08:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 22:08:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 22:08:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 22:08:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 22:08:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 22:08:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 22:08:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 22:08:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 22:08:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 22:08:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:08:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 22:08:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:08:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 22:08:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 22:08:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 22:08:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 22:08:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 22:08:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 22:08:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 22:08:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-11-06 22:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 22:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 22:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 22:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 22:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 22:08:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 22:08:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 22:08:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:08:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:08:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:08:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 22:08:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 22:08:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 22:08:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 22:08:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:08:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 22:08:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 22:08:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 22:08:34,446 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 22:08:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:08:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:08:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 22:08:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 22:08:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 22:08:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 22:08:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 22:08:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 22:08:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 22:08:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 22:08:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 22:08:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:08:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-11-06 22:08:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 22:08:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 22:08:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 22:08:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 22:08:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 22:08:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 22:08:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 22:08:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-11-06 22:08:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-11-06 22:08:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 22:08:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 22:08:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 22:08:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 22:08:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 22:08:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 22:08:34,452 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 22:08:34,452 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 22:08:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 22:08:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 22:08:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 22:08:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 22:08:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 22:08:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:08:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 22:08:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 22:08:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:08:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 22:08:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 22:08:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:08:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 22:08:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 22:08:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 22:08:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 22:08:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-11-06 22:08:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 22:08:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 22:08:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 22:08:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 22:08:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 22:08:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 22:08:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:08:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 22:08:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:08:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 22:08:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:08:35,697 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:08:35,698 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:08:35,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:35 BoogieIcfgContainer [2019-11-06 22:08:35,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:08:35,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:08:35,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:08:35,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:08:35,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:08:33" (1/3) ... [2019-11-06 22:08:35,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281fba43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:35, skipping insertion in model container [2019-11-06 22:08:35,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:08:34" (2/3) ... [2019-11-06 22:08:35,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281fba43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:08:35, skipping insertion in model container [2019-11-06 22:08:35,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:08:35" (3/3) ... [2019-11-06 22:08:35,710 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2019-11-06 22:08:35,720 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:08:35,730 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:08:35,742 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:08:35,769 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:08:35,770 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:08:35,770 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:08:35,770 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:08:35,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:08:35,771 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:08:35,771 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:08:35,771 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:08:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2019-11-06 22:08:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-06 22:08:35,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:35,807 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:08:35,809 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:35,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:35,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1133755032, now seen corresponding path program 1 times [2019-11-06 22:08:35,824 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:35,825 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433431055] [2019-11-06 22:08:35,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,487 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:36,636 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433431055] [2019-11-06 22:08:36,637 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:36,637 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:08:36,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075249791] [2019-11-06 22:08:36,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:08:36,645 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:36,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:08:36,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:08:36,663 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 4 states. [2019-11-06 22:08:37,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:37,905 INFO L93 Difference]: Finished difference Result 350 states and 444 transitions. [2019-11-06 22:08:37,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:08:37,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-11-06 22:08:37,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:37,923 INFO L225 Difference]: With dead ends: 350 [2019-11-06 22:08:37,923 INFO L226 Difference]: Without dead ends: 192 [2019-11-06 22:08:37,928 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:08:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2019-11-06 22:08:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 159. [2019-11-06 22:08:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-11-06 22:08:38,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2019-11-06 22:08:38,046 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 59 [2019-11-06 22:08:38,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:38,046 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2019-11-06 22:08:38,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:08:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2019-11-06 22:08:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-11-06 22:08:38,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:38,053 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:08:38,053 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:38,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:38,053 INFO L82 PathProgramCache]: Analyzing trace with hash -138893135, now seen corresponding path program 1 times [2019-11-06 22:08:38,055 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:38,055 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494173414] [2019-11-06 22:08:38,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,460 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:38,509 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494173414] [2019-11-06 22:08:38,509 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:38,510 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:08:38,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273538701] [2019-11-06 22:08:38,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:08:38,512 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:08:38,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:08:38,513 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 5 states. [2019-11-06 22:08:39,020 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:40,070 INFO L93 Difference]: Finished difference Result 289 states and 348 transitions. [2019-11-06 22:08:40,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:08:40,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2019-11-06 22:08:40,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:40,075 INFO L225 Difference]: With dead ends: 289 [2019-11-06 22:08:40,075 INFO L226 Difference]: Without dead ends: 182 [2019-11-06 22:08:40,102 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:08:40,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-11-06 22:08:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 150. [2019-11-06 22:08:40,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-06 22:08:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2019-11-06 22:08:40,149 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 60 [2019-11-06 22:08:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:40,150 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2019-11-06 22:08:40,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:08:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2019-11-06 22:08:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-11-06 22:08:40,152 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:40,152 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:08:40,153 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1740604635, now seen corresponding path program 1 times [2019-11-06 22:08:40,153 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:40,153 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672186959] [2019-11-06 22:08:40,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,520 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:40,639 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672186959] [2019-11-06 22:08:40,640 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:40,640 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:08:40,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788186489] [2019-11-06 22:08:40,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:08:40,641 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:40,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:08:40,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:08:40,641 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 9 states. [2019-11-06 22:08:41,112 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:41,487 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-11-06 22:08:41,753 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:42,012 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:43,022 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:45,106 INFO L93 Difference]: Finished difference Result 499 states and 610 transitions. [2019-11-06 22:08:45,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 22:08:45,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-11-06 22:08:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:45,113 INFO L225 Difference]: With dead ends: 499 [2019-11-06 22:08:45,114 INFO L226 Difference]: Without dead ends: 377 [2019-11-06 22:08:45,115 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-06 22:08:45,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2019-11-06 22:08:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 320. [2019-11-06 22:08:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-06 22:08:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 384 transitions. [2019-11-06 22:08:45,192 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 384 transitions. Word has length 64 [2019-11-06 22:08:45,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:45,192 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 384 transitions. [2019-11-06 22:08:45,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:08:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 384 transitions. [2019-11-06 22:08:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 22:08:45,195 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:45,195 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:08:45,195 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:45,196 INFO L82 PathProgramCache]: Analyzing trace with hash 659595443, now seen corresponding path program 1 times [2019-11-06 22:08:45,196 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:45,196 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72937353] [2019-11-06 22:08:45,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,549 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:08:45,672 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72937353] [2019-11-06 22:08:45,672 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:45,672 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:08:45,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223250080] [2019-11-06 22:08:45,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:08:45,673 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:45,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:08:45,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:08:45,674 INFO L87 Difference]: Start difference. First operand 320 states and 384 transitions. Second operand 9 states. [2019-11-06 22:08:46,129 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:46,840 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:47,951 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:48,213 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:48,528 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:48,831 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:49,772 INFO L93 Difference]: Finished difference Result 803 states and 1032 transitions. [2019-11-06 22:08:49,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 22:08:49,772 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2019-11-06 22:08:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:49,780 INFO L225 Difference]: With dead ends: 803 [2019-11-06 22:08:49,780 INFO L226 Difference]: Without dead ends: 511 [2019-11-06 22:08:49,781 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-11-06 22:08:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2019-11-06 22:08:49,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 447. [2019-11-06 22:08:49,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2019-11-06 22:08:49,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 535 transitions. [2019-11-06 22:08:49,877 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 535 transitions. Word has length 70 [2019-11-06 22:08:49,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:49,877 INFO L462 AbstractCegarLoop]: Abstraction has 447 states and 535 transitions. [2019-11-06 22:08:49,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:08:49,878 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 535 transitions. [2019-11-06 22:08:49,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 22:08:49,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:49,880 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:08:49,881 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:49,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:49,881 INFO L82 PathProgramCache]: Analyzing trace with hash -73914297, now seen corresponding path program 1 times [2019-11-06 22:08:49,881 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:49,882 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946086259] [2019-11-06 22:08:49,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,227 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:50,374 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946086259] [2019-11-06 22:08:50,374 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:50,374 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:08:50,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426617318] [2019-11-06 22:08:50,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 22:08:50,375 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:50,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 22:08:50,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:08:50,376 INFO L87 Difference]: Start difference. First operand 447 states and 535 transitions. Second operand 9 states. [2019-11-06 22:08:51,690 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:51,972 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:08:52,259 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:52,537 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:53,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:53,493 INFO L93 Difference]: Finished difference Result 956 states and 1224 transitions. [2019-11-06 22:08:53,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 22:08:53,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2019-11-06 22:08:53,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:53,499 INFO L225 Difference]: With dead ends: 956 [2019-11-06 22:08:53,499 INFO L226 Difference]: Without dead ends: 537 [2019-11-06 22:08:53,501 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-06 22:08:53,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-11-06 22:08:53,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 460. [2019-11-06 22:08:53,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-11-06 22:08:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 549 transitions. [2019-11-06 22:08:53,576 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 549 transitions. Word has length 107 [2019-11-06 22:08:53,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:53,576 INFO L462 AbstractCegarLoop]: Abstraction has 460 states and 549 transitions. [2019-11-06 22:08:53,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 22:08:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 549 transitions. [2019-11-06 22:08:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 22:08:53,578 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:53,579 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:08:53,579 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:53,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:53,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1854358405, now seen corresponding path program 1 times [2019-11-06 22:08:53,580 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:53,580 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554554663] [2019-11-06 22:08:53,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,858 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:54,010 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554554663] [2019-11-06 22:08:54,011 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:54,011 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 22:08:54,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713053272] [2019-11-06 22:08:54,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 22:08:54,013 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:54,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 22:08:54,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:08:54,014 INFO L87 Difference]: Start difference. First operand 460 states and 549 transitions. Second operand 11 states. [2019-11-06 22:08:54,643 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:08:54,895 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:55,156 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:56,043 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:56,393 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:56,688 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:08:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:08:57,880 INFO L93 Difference]: Finished difference Result 979 states and 1248 transitions. [2019-11-06 22:08:57,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 22:08:57,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2019-11-06 22:08:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:08:57,885 INFO L225 Difference]: With dead ends: 979 [2019-11-06 22:08:57,885 INFO L226 Difference]: Without dead ends: 547 [2019-11-06 22:08:57,887 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-11-06 22:08:57,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-11-06 22:08:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 468. [2019-11-06 22:08:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-11-06 22:08:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2019-11-06 22:08:57,980 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 107 [2019-11-06 22:08:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:08:57,980 INFO L462 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2019-11-06 22:08:57,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 22:08:57,980 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2019-11-06 22:08:57,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 22:08:57,982 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:08:57,983 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:08:57,983 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:08:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:08:57,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1613818276, now seen corresponding path program 1 times [2019-11-06 22:08:57,984 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:08:57,984 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207959970] [2019-11-06 22:08:57,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:08:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,270 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:08:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:08:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:08:58,411 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207959970] [2019-11-06 22:08:58,411 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:08:58,411 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 22:08:58,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153494951] [2019-11-06 22:08:58,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:08:58,412 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:08:58,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:08:58,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:08:58,413 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 7 states. [2019-11-06 22:08:58,821 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:08:59,435 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:01,663 INFO L93 Difference]: Finished difference Result 1447 states and 1864 transitions. [2019-11-06 22:09:01,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 22:09:01,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2019-11-06 22:09:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:01,673 INFO L225 Difference]: With dead ends: 1447 [2019-11-06 22:09:01,673 INFO L226 Difference]: Without dead ends: 1007 [2019-11-06 22:09:01,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-11-06 22:09:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2019-11-06 22:09:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 933. [2019-11-06 22:09:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2019-11-06 22:09:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1131 transitions. [2019-11-06 22:09:01,913 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1131 transitions. Word has length 107 [2019-11-06 22:09:01,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:01,913 INFO L462 AbstractCegarLoop]: Abstraction has 933 states and 1131 transitions. [2019-11-06 22:09:01,913 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:09:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1131 transitions. [2019-11-06 22:09:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-06 22:09:01,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:01,920 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:01,920 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:01,921 INFO L82 PathProgramCache]: Analyzing trace with hash 608509898, now seen corresponding path program 1 times [2019-11-06 22:09:01,922 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:01,922 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878409878] [2019-11-06 22:09:01,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,347 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:09:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:09:02,517 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878409878] [2019-11-06 22:09:02,517 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:02,517 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 22:09:02,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823666982] [2019-11-06 22:09:02,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:09:02,518 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:02,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 22:09:02,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-06 22:09:02,519 INFO L87 Difference]: Start difference. First operand 933 states and 1131 transitions. Second operand 12 states. [2019-11-06 22:09:03,033 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:03,797 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:04,566 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:04,942 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:05,207 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 22:09:05,501 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:05,812 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 22:09:07,944 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 22:09:08,262 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 22:09:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:08,995 INFO L93 Difference]: Finished difference Result 2649 states and 3420 transitions. [2019-11-06 22:09:08,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-06 22:09:08,996 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2019-11-06 22:09:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:09,008 INFO L225 Difference]: With dead ends: 2649 [2019-11-06 22:09:09,008 INFO L226 Difference]: Without dead ends: 1932 [2019-11-06 22:09:09,011 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2019-11-06 22:09:09,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2019-11-06 22:09:09,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1638. [2019-11-06 22:09:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2019-11-06 22:09:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1972 transitions. [2019-11-06 22:09:09,312 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1972 transitions. Word has length 111 [2019-11-06 22:09:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:09,315 INFO L462 AbstractCegarLoop]: Abstraction has 1638 states and 1972 transitions. [2019-11-06 22:09:09,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 22:09:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1972 transitions. [2019-11-06 22:09:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-06 22:09:09,320 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:09,322 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:09,322 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:09,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:09,322 INFO L82 PathProgramCache]: Analyzing trace with hash 866799866, now seen corresponding path program 1 times [2019-11-06 22:09:09,323 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:09,323 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443524599] [2019-11-06 22:09:09,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,700 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 22:09:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-06 22:09:10,128 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443524599] [2019-11-06 22:09:10,128 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711036588] [2019-11-06 22:09:10,129 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 22:09:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:10,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-06 22:09:10,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:09:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:09:10,604 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 22:09:10,604 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 20 [2019-11-06 22:09:10,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413827194] [2019-11-06 22:09:10,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-06 22:09:10,605 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:10,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-06 22:09:10,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-11-06 22:09:10,606 INFO L87 Difference]: Start difference. First operand 1638 states and 1972 transitions. Second operand 20 states. [2019-11-06 22:09:11,352 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-11-06 22:09:11,765 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-11-06 22:09:12,076 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 196