java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:55,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:55,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:55,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:55,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:55,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:55,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:55,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:55,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:55,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:55,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:55,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:55,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:55,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:55,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:55,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:55,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:55,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:55,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:55,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:55,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:55,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:55,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:55,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:55,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:55,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:55,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:55,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:55,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:55,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:55,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:55,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:55,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:55,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:55,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:55,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:55,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:55,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:55,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:55,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:55,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:55,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:36:55,467 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:55,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:55,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:55,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:55,473 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:55,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:55,474 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:55,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:55,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:55,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:55,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:55,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:55,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:55,475 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:55,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:55,475 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:55,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:55,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:55,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:55,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:55,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:55,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:55,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:55,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:55,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:55,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:55,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:55,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:55,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:55,766 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:55,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:55,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:55,791 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:55,791 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:55,792 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-10-14 23:36:55,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1860e867/63e8d886b75f4adca1a9c4316cd4113d/FLAG8e75db4f0 [2019-10-14 23:36:56,449 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:56,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product50.cil.c [2019-10-14 23:36:56,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1860e867/63e8d886b75f4adca1a9c4316cd4113d/FLAG8e75db4f0 [2019-10-14 23:36:56,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1860e867/63e8d886b75f4adca1a9c4316cd4113d [2019-10-14 23:36:56,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:56,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:56,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:56,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:56,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:56,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:56" (1/1) ... [2019-10-14 23:36:56,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e73cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:56, skipping insertion in model container [2019-10-14 23:36:56,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:56" (1/1) ... [2019-10-14 23:36:56,767 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:56,817 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:57,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:57,273 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:57,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:57,403 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:57,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57 WrapperNode [2019-10-14 23:36:57,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:57,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:57,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:57,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:57,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57" (1/1) ... [2019-10-14 23:36:57,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57" (1/1) ... [2019-10-14 23:36:57,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57" (1/1) ... [2019-10-14 23:36:57,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57" (1/1) ... [2019-10-14 23:36:57,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57" (1/1) ... [2019-10-14 23:36:57,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57" (1/1) ... [2019-10-14 23:36:57,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57" (1/1) ... [2019-10-14 23:36:57,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:57,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:57,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:57,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:57,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:57,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:57,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:57,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:57,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:57,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:57,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:57,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:57,583 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:57,584 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:57,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:57,584 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:57,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:57,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:57,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:36:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:57,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:57,586 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:36:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:36:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:57,589 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:57,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:57,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:36:57,592 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:57,593 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:36:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:57,594 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:36:57,595 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:57,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:58,712 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:58,713 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:58,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:58 BoogieIcfgContainer [2019-10-14 23:36:58,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:58,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:58,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:58,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:58,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:56" (1/3) ... [2019-10-14 23:36:58,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ddb441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:58, skipping insertion in model container [2019-10-14 23:36:58,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:57" (2/3) ... [2019-10-14 23:36:58,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ddb441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:58, skipping insertion in model container [2019-10-14 23:36:58,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:58" (3/3) ... [2019-10-14 23:36:58,726 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product50.cil.c [2019-10-14 23:36:58,737 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:58,748 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:58,760 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:58,797 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:58,798 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:58,798 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:58,798 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:58,798 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:58,799 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:58,799 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:58,799 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-10-14 23:36:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:58,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:58,837 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:58,840 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:58,846 INFO L82 PathProgramCache]: Analyzing trace with hash 291336746, now seen corresponding path program 1 times [2019-10-14 23:36:58,855 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:58,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547793626] [2019-10-14 23:36:58,856 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:58,856 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:58,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,523 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:59,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547793626] [2019-10-14 23:36:59,617 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:59,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:36:59,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042305986] [2019-10-14 23:36:59,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:36:59,625 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:59,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:36:59,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:36:59,643 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2019-10-14 23:37:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:00,949 INFO L93 Difference]: Finished difference Result 318 states and 412 transitions. [2019-10-14 23:37:00,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:37:00,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:37:00,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:00,968 INFO L225 Difference]: With dead ends: 318 [2019-10-14 23:37:00,969 INFO L226 Difference]: Without dead ends: 171 [2019-10-14 23:37:00,974 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:37:00,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-10-14 23:37:01,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 138. [2019-10-14 23:37:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-10-14 23:37:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2019-10-14 23:37:01,071 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2019-10-14 23:37:01,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:01,071 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2019-10-14 23:37:01,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:37:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2019-10-14 23:37:01,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:37:01,075 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:01,076 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:01,076 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:01,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:01,077 INFO L82 PathProgramCache]: Analyzing trace with hash -951540010, now seen corresponding path program 1 times [2019-10-14 23:37:01,077 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:01,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404847360] [2019-10-14 23:37:01,077 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:01,078 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:01,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,492 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:01,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404847360] [2019-10-14 23:37:01,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:01,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:37:01,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068179785] [2019-10-14 23:37:01,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:37:01,531 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:01,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:37:01,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:37:01,532 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 4 states. [2019-10-14 23:37:01,999 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:02,846 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2019-10-14 23:37:02,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:37:02,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:37:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:02,850 INFO L225 Difference]: With dead ends: 247 [2019-10-14 23:37:02,850 INFO L226 Difference]: Without dead ends: 155 [2019-10-14 23:37:02,852 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:37:02,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-10-14 23:37:02,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2019-10-14 23:37:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-14 23:37:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2019-10-14 23:37:02,891 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 53 [2019-10-14 23:37:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:02,891 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2019-10-14 23:37:02,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:37:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2019-10-14 23:37:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 23:37:02,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:02,894 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:02,894 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:02,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:02,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1718267444, now seen corresponding path program 1 times [2019-10-14 23:37:02,895 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:02,895 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067660691] [2019-10-14 23:37:02,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:02,895 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:02,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:03,275 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:03,341 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067660691] [2019-10-14 23:37:03,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:03,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:03,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074353941] [2019-10-14 23:37:03,343 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:03,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:03,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:03,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:03,344 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 8 states. [2019-10-14 23:37:03,828 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:04,138 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:04,421 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:04,725 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:06,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:06,083 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2019-10-14 23:37:06,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:06,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-14 23:37:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:06,087 INFO L225 Difference]: With dead ends: 260 [2019-10-14 23:37:06,087 INFO L226 Difference]: Without dead ends: 155 [2019-10-14 23:37:06,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-10-14 23:37:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 129. [2019-10-14 23:37:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-14 23:37:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 148 transitions. [2019-10-14 23:37:06,122 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 148 transitions. Word has length 58 [2019-10-14 23:37:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:06,122 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 148 transitions. [2019-10-14 23:37:06,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2019-10-14 23:37:06,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-14 23:37:06,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:06,125 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:06,126 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:06,126 INFO L82 PathProgramCache]: Analyzing trace with hash -625773272, now seen corresponding path program 1 times [2019-10-14 23:37:06,126 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:06,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236287022] [2019-10-14 23:37:06,127 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:06,127 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:06,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,394 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:06,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236287022] [2019-10-14 23:37:06,523 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:06,523 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:37:06,523 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926270590] [2019-10-14 23:37:06,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:37:06,524 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:06,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:37:06,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:37:06,526 INFO L87 Difference]: Start difference. First operand 129 states and 148 transitions. Second operand 6 states. [2019-10-14 23:37:06,863 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:08,152 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:08,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:08,758 INFO L93 Difference]: Finished difference Result 369 states and 453 transitions. [2019-10-14 23:37:08,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:37:08,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-14 23:37:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:08,763 INFO L225 Difference]: With dead ends: 369 [2019-10-14 23:37:08,763 INFO L226 Difference]: Without dead ends: 264 [2019-10-14 23:37:08,764 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:37:08,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2019-10-14 23:37:08,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 221. [2019-10-14 23:37:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2019-10-14 23:37:08,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 251 transitions. [2019-10-14 23:37:08,817 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 251 transitions. Word has length 71 [2019-10-14 23:37:08,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:08,818 INFO L462 AbstractCegarLoop]: Abstraction has 221 states and 251 transitions. [2019-10-14 23:37:08,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:37:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 251 transitions. [2019-10-14 23:37:08,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-10-14 23:37:08,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:08,820 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:08,820 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:08,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:08,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1888633043, now seen corresponding path program 1 times [2019-10-14 23:37:08,821 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:08,821 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800614214] [2019-10-14 23:37:08,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:08,822 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:08,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,120 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:09,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800614214] [2019-10-14 23:37:09,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:09,246 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:09,246 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555167584] [2019-10-14 23:37:09,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:09,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:09,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:09,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:09,250 INFO L87 Difference]: Start difference. First operand 221 states and 251 transitions. Second operand 8 states. [2019-10-14 23:37:09,661 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:11,044 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:11,346 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:11,630 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:11,926 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:12,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:12,810 INFO L93 Difference]: Finished difference Result 588 states and 730 transitions. [2019-10-14 23:37:12,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:37:12,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2019-10-14 23:37:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:12,816 INFO L225 Difference]: With dead ends: 588 [2019-10-14 23:37:12,817 INFO L226 Difference]: Without dead ends: 391 [2019-10-14 23:37:12,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-10-14 23:37:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 348. [2019-10-14 23:37:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2019-10-14 23:37:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 403 transitions. [2019-10-14 23:37:12,887 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 403 transitions. Word has length 85 [2019-10-14 23:37:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:12,888 INFO L462 AbstractCegarLoop]: Abstraction has 348 states and 403 transitions. [2019-10-14 23:37:12,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 403 transitions. [2019-10-14 23:37:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:37:12,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:12,890 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:12,890 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:12,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:12,891 INFO L82 PathProgramCache]: Analyzing trace with hash 408582233, now seen corresponding path program 1 times [2019-10-14 23:37:12,891 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:12,891 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825528031] [2019-10-14 23:37:12,891 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:12,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:12,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,193 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:13,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825528031] [2019-10-14 23:37:13,318 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:13,318 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:37:13,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560096084] [2019-10-14 23:37:13,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:37:13,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:13,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:37:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:13,320 INFO L87 Difference]: Start difference. First operand 348 states and 403 transitions. Second operand 10 states. [2019-10-14 23:37:13,813 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:15,277 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:15,609 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:15,887 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:16,141 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:16,540 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:17,944 INFO L93 Difference]: Finished difference Result 799 states and 1008 transitions. [2019-10-14 23:37:17,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:37:17,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2019-10-14 23:37:17,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:17,949 INFO L225 Difference]: With dead ends: 799 [2019-10-14 23:37:17,949 INFO L226 Difference]: Without dead ends: 591 [2019-10-14 23:37:17,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:37:17,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2019-10-14 23:37:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 519. [2019-10-14 23:37:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-14 23:37:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 610 transitions. [2019-10-14 23:37:18,045 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 610 transitions. Word has length 89 [2019-10-14 23:37:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:18,045 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 610 transitions. [2019-10-14 23:37:18,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:37:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 610 transitions. [2019-10-14 23:37:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:37:18,048 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:18,048 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:18,048 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:18,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:18,049 INFO L82 PathProgramCache]: Analyzing trace with hash -514101350, now seen corresponding path program 1 times [2019-10-14 23:37:18,049 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:18,049 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060677849] [2019-10-14 23:37:18,049 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:18,049 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:18,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,311 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:18,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060677849] [2019-10-14 23:37:18,444 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:18,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:18,445 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518433697] [2019-10-14 23:37:18,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:18,445 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:18,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:18,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:18,446 INFO L87 Difference]: Start difference. First operand 519 states and 610 transitions. Second operand 8 states. [2019-10-14 23:37:19,397 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:19,644 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:19,917 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:20,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:20,937 INFO L93 Difference]: Finished difference Result 962 states and 1177 transitions. [2019-10-14 23:37:20,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:20,937 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2019-10-14 23:37:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:20,941 INFO L225 Difference]: With dead ends: 962 [2019-10-14 23:37:20,942 INFO L226 Difference]: Without dead ends: 579 [2019-10-14 23:37:20,943 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:20,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-10-14 23:37:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 519. [2019-10-14 23:37:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-14 23:37:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 609 transitions. [2019-10-14 23:37:21,052 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 609 transitions. Word has length 89 [2019-10-14 23:37:21,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:21,053 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 609 transitions. [2019-10-14 23:37:21,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:21,053 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 609 transitions. [2019-10-14 23:37:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-14 23:37:21,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:21,056 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:21,056 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:21,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1358106852, now seen corresponding path program 1 times [2019-10-14 23:37:21,057 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:21,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709787620] [2019-10-14 23:37:21,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:21,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:21,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,366 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:21,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709787620] [2019-10-14 23:37:21,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:21,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:21,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973558836] [2019-10-14 23:37:21,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:21,539 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:21,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:21,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:21,540 INFO L87 Difference]: Start difference. First operand 519 states and 609 transitions. Second operand 12 states. [2019-10-14 23:37:22,175 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:22,447 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:22,717 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:23,492 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:23,765 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:24,063 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:24,318 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:25,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:25,716 INFO L93 Difference]: Finished difference Result 1063 states and 1302 transitions. [2019-10-14 23:37:25,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:25,717 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2019-10-14 23:37:25,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:25,724 INFO L225 Difference]: With dead ends: 1063 [2019-10-14 23:37:25,724 INFO L226 Difference]: Without dead ends: 568 [2019-10-14 23:37:25,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:37:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-14 23:37:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 519. [2019-10-14 23:37:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-14 23:37:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 607 transitions. [2019-10-14 23:37:25,882 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 607 transitions. Word has length 89 [2019-10-14 23:37:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:25,882 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 607 transitions. [2019-10-14 23:37:25,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:25,883 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 607 transitions. [2019-10-14 23:37:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-14 23:37:25,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:25,887 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:25,887 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:25,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:25,888 INFO L82 PathProgramCache]: Analyzing trace with hash -967187523, now seen corresponding path program 1 times [2019-10-14 23:37:25,888 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:25,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175569169] [2019-10-14 23:37:25,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:25,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:25,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,276 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:26,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175569169] [2019-10-14 23:37:26,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:26,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:37:26,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915155893] [2019-10-14 23:37:26,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:37:26,437 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:26,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:37:26,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:37:26,439 INFO L87 Difference]: Start difference. First operand 519 states and 607 transitions. Second operand 13 states. [2019-10-14 23:37:27,413 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:27,690 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:27,962 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:29,033 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:29,812 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:30,214 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:30,514 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:31,381 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:31,728 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:32,108 INFO L93 Difference]: Finished difference Result 1056 states and 1260 transitions. [2019-10-14 23:37:32,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:37:32,108 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2019-10-14 23:37:32,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:32,113 INFO L225 Difference]: With dead ends: 1056 [2019-10-14 23:37:32,113 INFO L226 Difference]: Without dead ends: 561 [2019-10-14 23:37:32,116 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2019-10-14 23:37:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2019-10-14 23:37:32,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 519. [2019-10-14 23:37:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2019-10-14 23:37:32,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 595 transitions. [2019-10-14 23:37:32,228 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 595 transitions. Word has length 90 [2019-10-14 23:37:32,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:32,231 INFO L462 AbstractCegarLoop]: Abstraction has 519 states and 595 transitions. [2019-10-14 23:37:32,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:37:32,231 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 595 transitions. [2019-10-14 23:37:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-14 23:37:32,237 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:32,238 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:32,238 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:32,238 INFO L82 PathProgramCache]: Analyzing trace with hash -129105783, now seen corresponding path program 1 times [2019-10-14 23:37:32,239 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:32,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719935110] [2019-10-14 23:37:32,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:32,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:32,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,550 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:37:32,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719935110] [2019-10-14 23:37:32,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511298871] [2019-10-14 23:37:32,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:33,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-14 23:37:33,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:37:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:37:33,326 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:37:33,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-10-14 23:37:33,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066699077] [2019-10-14 23:37:33,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-14 23:37:33,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:33,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-14 23:37:33,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:37:33,328 INFO L87 Difference]: Start difference. First operand 519 states and 595 transitions. Second operand 19 states. [2019-10-14 23:37:34,079 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:35,035 WARN L191 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 188