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_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:37:34,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:37:34,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:37:34,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:37:34,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:37:34,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:37:34,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:37:34,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:37:34,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:37:34,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:37:34,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:37:34,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:37:34,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:37:34,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:37:34,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:37:34,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:37:34,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:37:34,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:37:34,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:37:34,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:37:34,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:37:34,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:37:34,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:37:34,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:37:34,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:37:34,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:37:34,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:37:34,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:37:34,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:37:34,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:37:34,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:37:34,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:37:34,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:37:34,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:37:34,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:37:34,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:37:34,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:37:34,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:37:34,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:37:34,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:37:34,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:37:34,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:37:34,530 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:37:34,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:37:34,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:37:34,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:37:34,535 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:37:34,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:37:34,536 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:37:34,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:37:34,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:37:34,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:37:34,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:37:34,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:37:34,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:37:34,537 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:37:34,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:37:34,538 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:37:34,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:37:34,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:37:34,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:37:34,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:37:34,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:37:34,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:34,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:37:34,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:37:34,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:37:34,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:37:34,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:37:34,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:37:34,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:37:34,828 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:37:34,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:37:34,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:37:34,847 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:37:34,847 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:37:34,848 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product37.cil.c [2019-10-13 19:37:34,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/967257bb0/d3010f37711f43348e6a4ee0a55746bb/FLAG345061415 [2019-10-13 19:37:35,465 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:37:35,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product37.cil.c [2019-10-13 19:37:35,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/967257bb0/d3010f37711f43348e6a4ee0a55746bb/FLAG345061415 [2019-10-13 19:37:35,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/967257bb0/d3010f37711f43348e6a4ee0a55746bb [2019-10-13 19:37:35,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:37:35,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:37:35,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:35,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:37:35,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:37:35,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:35" (1/1) ... [2019-10-13 19:37:35,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3233fd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:35, skipping insertion in model container [2019-10-13 19:37:35,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:35" (1/1) ... [2019-10-13 19:37:35,764 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:37:35,828 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:37:36,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:36,316 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:37:36,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:36,437 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:37:36,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36 WrapperNode [2019-10-13 19:37:36,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:36,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:37:36,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:37:36,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:37:36,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36" (1/1) ... [2019-10-13 19:37:36,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36" (1/1) ... [2019-10-13 19:37:36,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36" (1/1) ... [2019-10-13 19:37:36,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36" (1/1) ... [2019-10-13 19:37:36,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36" (1/1) ... [2019-10-13 19:37:36,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36" (1/1) ... [2019-10-13 19:37:36,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36" (1/1) ... [2019-10-13 19:37:36,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:37:36,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:37:36,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:37:36,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:37:36,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:37:36,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:37:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:37:36,592 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:37:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:37:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:37:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:37:36,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:37:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:37:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:37:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:37:36,596 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:37:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:37:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:37:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:37:36,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:37:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:37:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:37:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:37:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:37:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:37:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:37:36,600 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:37:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:37:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:37:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:37:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:37:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:37:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:37:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:37:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:37:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:37:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:37:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:37:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:37:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:37:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:37:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:37:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:37:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:37:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:37:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:37:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:37:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:37:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:37:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:37:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:37:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:37:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:37:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:37:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:37:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:37:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:37:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:37:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:37:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:37:36,606 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:37:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:37:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:37:36,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:37:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:37:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:37:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:37:36,608 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:37:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:37:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:37:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:37:36,609 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:37:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:37:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:37:36,610 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:37:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:37:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:37:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:37:36,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:37:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:37:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:37:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:37:37,651 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:37:37,651 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:37:37,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:37 BoogieIcfgContainer [2019-10-13 19:37:37,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:37:37,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:37:37,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:37:37,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:37:37,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:35" (1/3) ... [2019-10-13 19:37:37,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8bb2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:37, skipping insertion in model container [2019-10-13 19:37:37,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:36" (2/3) ... [2019-10-13 19:37:37,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8bb2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:37, skipping insertion in model container [2019-10-13 19:37:37,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:37" (3/3) ... [2019-10-13 19:37:37,661 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product37.cil.c [2019-10-13 19:37:37,671 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:37:37,680 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:37:37,692 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:37:37,719 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:37:37,719 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:37:37,719 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:37:37,719 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:37:37,720 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:37:37,720 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:37:37,720 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:37:37,720 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:37:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2019-10-13 19:37:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:37:37,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:37,755 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:37,757 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:37,762 INFO L82 PathProgramCache]: Analyzing trace with hash -286818330, now seen corresponding path program 1 times [2019-10-13 19:37:37,772 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:37,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396468642] [2019-10-13 19:37:37,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:37,773 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:37,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,435 WARN L191 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:38,565 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396468642] [2019-10-13 19:37:38,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:38,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:37:38,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283216956] [2019-10-13 19:37:38,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:37:38,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:38,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:37:38,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:37:38,607 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2019-10-13 19:37:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:39,784 INFO L93 Difference]: Finished difference Result 299 states and 392 transitions. [2019-10-13 19:37:39,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:37:39,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:37:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:39,802 INFO L225 Difference]: With dead ends: 299 [2019-10-13 19:37:39,802 INFO L226 Difference]: Without dead ends: 161 [2019-10-13 19:37:39,807 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 [2019-10-13 19:37:39,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2019-10-13 19:37:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 129. [2019-10-13 19:37:39,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2019-10-13 19:37:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 152 transitions. [2019-10-13 19:37:39,897 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 152 transitions. Word has length 52 [2019-10-13 19:37:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:39,897 INFO L462 AbstractCegarLoop]: Abstraction has 129 states and 152 transitions. [2019-10-13 19:37:39,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:37:39,897 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 152 transitions. [2019-10-13 19:37:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:37:39,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:39,902 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] [2019-10-13 19:37:39,902 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:39,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:39,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2080874190, now seen corresponding path program 1 times [2019-10-13 19:37:39,903 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:39,903 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556734434] [2019-10-13 19:37:39,903 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:39,903 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:39,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,292 WARN L191 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:40,345 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556734434] [2019-10-13 19:37:40,346 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:40,346 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:37:40,346 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680708744] [2019-10-13 19:37:40,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:37:40,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:40,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:37:40,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:40,361 INFO L87 Difference]: Start difference. First operand 129 states and 152 transitions. Second operand 4 states. [2019-10-13 19:37:40,869 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:41,703 INFO L93 Difference]: Finished difference Result 232 states and 283 transitions. [2019-10-13 19:37:41,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:37:41,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:37:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:41,706 INFO L225 Difference]: With dead ends: 232 [2019-10-13 19:37:41,707 INFO L226 Difference]: Without dead ends: 145 [2019-10-13 19:37:41,708 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 [2019-10-13 19:37:41,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-10-13 19:37:41,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2019-10-13 19:37:41,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-13 19:37:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2019-10-13 19:37:41,743 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 53 [2019-10-13 19:37:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:41,744 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2019-10-13 19:37:41,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:37:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2019-10-13 19:37:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:37:41,746 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:41,746 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:41,746 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:41,747 INFO L82 PathProgramCache]: Analyzing trace with hash -655892717, now seen corresponding path program 1 times [2019-10-13 19:37:41,747 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:41,747 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244049876] [2019-10-13 19:37:41,747 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:41,748 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:41,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,092 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:42,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244049876] [2019-10-13 19:37:42,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:42,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:42,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540561912] [2019-10-13 19:37:42,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:42,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:42,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:42,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:42,181 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 8 states. [2019-10-13 19:37:42,761 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:43,110 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:43,392 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:43,680 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:44,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:44,926 INFO L93 Difference]: Finished difference Result 241 states and 297 transitions. [2019-10-13 19:37:44,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:37:44,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-13 19:37:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:44,930 INFO L225 Difference]: With dead ends: 241 [2019-10-13 19:37:44,930 INFO L226 Difference]: Without dead ends: 145 [2019-10-13 19:37:44,931 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-10-13 19:37:44,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2019-10-13 19:37:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-13 19:37:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2019-10-13 19:37:44,965 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 57 [2019-10-13 19:37:44,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:44,966 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2019-10-13 19:37:44,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2019-10-13 19:37:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:37:44,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:44,968 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] [2019-10-13 19:37:44,969 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:44,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:44,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1564257937, now seen corresponding path program 1 times [2019-10-13 19:37:44,969 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:44,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152031919] [2019-10-13 19:37:44,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:44,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:44,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,310 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:45,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152031919] [2019-10-13 19:37:45,387 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:45,388 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:37:45,388 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543521190] [2019-10-13 19:37:45,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:37:45,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:45,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:37:45,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:37:45,389 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand 6 states. [2019-10-13 19:37:45,866 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:47,106 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:47,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:47,859 INFO L93 Difference]: Finished difference Result 345 states and 427 transitions. [2019-10-13 19:37:47,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:37:47,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-13 19:37:47,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:47,864 INFO L225 Difference]: With dead ends: 345 [2019-10-13 19:37:47,864 INFO L226 Difference]: Without dead ends: 249 [2019-10-13 19:37:47,865 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 [2019-10-13 19:37:47,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2019-10-13 19:37:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 208. [2019-10-13 19:37:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2019-10-13 19:37:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 238 transitions. [2019-10-13 19:37:47,916 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 238 transitions. Word has length 70 [2019-10-13 19:37:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:47,917 INFO L462 AbstractCegarLoop]: Abstraction has 208 states and 238 transitions. [2019-10-13 19:37:47,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:37:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 238 transitions. [2019-10-13 19:37:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:37:47,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:47,919 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] [2019-10-13 19:37:47,919 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:47,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1686316557, now seen corresponding path program 1 times [2019-10-13 19:37:47,920 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:47,920 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801809589] [2019-10-13 19:37:47,920 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:47,920 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:47,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,250 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:48,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801809589] [2019-10-13 19:37:48,385 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:48,385 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:48,385 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446761479] [2019-10-13 19:37:48,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:48,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:48,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:48,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:48,390 INFO L87 Difference]: Start difference. First operand 208 states and 238 transitions. Second operand 8 states. [2019-10-13 19:37:48,895 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:50,245 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:50,578 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:50,911 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:51,201 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:52,013 INFO L93 Difference]: Finished difference Result 551 states and 690 transitions. [2019-10-13 19:37:52,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:37:52,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-13 19:37:52,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:52,020 INFO L225 Difference]: With dead ends: 551 [2019-10-13 19:37:52,020 INFO L226 Difference]: Without dead ends: 367 [2019-10-13 19:37:52,022 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:37:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2019-10-13 19:37:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 327. [2019-10-13 19:37:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2019-10-13 19:37:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 382 transitions. [2019-10-13 19:37:52,093 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 382 transitions. Word has length 84 [2019-10-13 19:37:52,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:52,094 INFO L462 AbstractCegarLoop]: Abstraction has 327 states and 382 transitions. [2019-10-13 19:37:52,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:52,094 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 382 transitions. [2019-10-13 19:37:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:37:52,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:52,096 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] [2019-10-13 19:37:52,096 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:52,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:52,097 INFO L82 PathProgramCache]: Analyzing trace with hash 645528839, now seen corresponding path program 1 times [2019-10-13 19:37:52,097 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:52,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400231555] [2019-10-13 19:37:52,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,433 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:52,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400231555] [2019-10-13 19:37:52,557 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:52,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:52,557 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148149207] [2019-10-13 19:37:52,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:52,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:52,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:52,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:52,559 INFO L87 Difference]: Start difference. First operand 327 states and 382 transitions. Second operand 10 states. [2019-10-13 19:37:53,169 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:54,670 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:55,028 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:55,316 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:55,583 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:55,998 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:57,314 INFO L93 Difference]: Finished difference Result 748 states and 953 transitions. [2019-10-13 19:37:57,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:37:57,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-13 19:37:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:57,320 INFO L225 Difference]: With dead ends: 748 [2019-10-13 19:37:57,320 INFO L226 Difference]: Without dead ends: 553 [2019-10-13 19:37:57,322 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 [2019-10-13 19:37:57,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2019-10-13 19:37:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 485. [2019-10-13 19:37:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-13 19:37:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 576 transitions. [2019-10-13 19:37:57,412 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 576 transitions. Word has length 88 [2019-10-13 19:37:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:57,413 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 576 transitions. [2019-10-13 19:37:57,413 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:57,413 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 576 transitions. [2019-10-13 19:37:57,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:37:57,415 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:57,415 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] [2019-10-13 19:37:57,415 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:57,416 INFO L82 PathProgramCache]: Analyzing trace with hash -277154744, now seen corresponding path program 1 times [2019-10-13 19:37:57,416 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:57,416 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566204510] [2019-10-13 19:37:57,416 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:57,417 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:57,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,671 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:57,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566204510] [2019-10-13 19:37:57,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:57,803 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:57,803 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937581338] [2019-10-13 19:37:57,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:57,804 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:57,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:57,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:57,805 INFO L87 Difference]: Start difference. First operand 485 states and 576 transitions. Second operand 8 states. [2019-10-13 19:37:58,868 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:59,143 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:59,428 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:00,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:00,545 INFO L93 Difference]: Finished difference Result 898 states and 1109 transitions. [2019-10-13 19:38:00,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:00,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-13 19:38:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:00,552 INFO L225 Difference]: With dead ends: 898 [2019-10-13 19:38:00,552 INFO L226 Difference]: Without dead ends: 541 [2019-10-13 19:38:00,554 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 [2019-10-13 19:38:00,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-10-13 19:38:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 485. [2019-10-13 19:38:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-13 19:38:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 575 transitions. [2019-10-13 19:38:00,655 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 575 transitions. Word has length 88 [2019-10-13 19:38:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:00,655 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 575 transitions. [2019-10-13 19:38:00,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:00,656 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 575 transitions. [2019-10-13 19:38:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:38:00,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:00,658 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] [2019-10-13 19:38:00,658 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:00,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1121160246, now seen corresponding path program 1 times [2019-10-13 19:38:00,659 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:00,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939352941] [2019-10-13 19:38:00,659 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:00,659 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:00,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,975 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:01,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939352941] [2019-10-13 19:38:01,119 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:01,119 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:38:01,119 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214276860] [2019-10-13 19:38:01,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:38:01,120 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:01,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:38:01,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:01,121 INFO L87 Difference]: Start difference. First operand 485 states and 575 transitions. Second operand 12 states. [2019-10-13 19:38:01,947 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:02,207 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:02,458 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:03,252 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:03,536 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:03,841 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:04,108 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:05,346 INFO L93 Difference]: Finished difference Result 997 states and 1235 transitions. [2019-10-13 19:38:05,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:38:05,348 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-13 19:38:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:05,353 INFO L225 Difference]: With dead ends: 997 [2019-10-13 19:38:05,353 INFO L226 Difference]: Without dead ends: 536 [2019-10-13 19:38:05,355 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 [2019-10-13 19:38:05,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2019-10-13 19:38:05,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 485. [2019-10-13 19:38:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-13 19:38:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 573 transitions. [2019-10-13 19:38:05,449 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 573 transitions. Word has length 88 [2019-10-13 19:38:05,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:05,449 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 573 transitions. [2019-10-13 19:38:05,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:38:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 573 transitions. [2019-10-13 19:38:05,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-10-13 19:38:05,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:05,451 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:05,452 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:05,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:05,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1811416500, now seen corresponding path program 1 times [2019-10-13 19:38:05,453 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:05,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395191545] [2019-10-13 19:38:05,453 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:05,453 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:05,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,841 WARN L191 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:06,138 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395191545] [2019-10-13 19:38:06,138 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:06,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:38:06,141 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328110484] [2019-10-13 19:38:06,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:38:06,142 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:06,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:38:06,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:38:06,143 INFO L87 Difference]: Start difference. First operand 485 states and 573 transitions. Second operand 13 states. [2019-10-13 19:38:07,017 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:07,280 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:07,533 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:08,568 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:09,331 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:09,720 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:10,027 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:10,814 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:11,134 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:11,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:11,512 INFO L93 Difference]: Finished difference Result 985 states and 1186 transitions. [2019-10-13 19:38:11,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 19:38:11,513 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2019-10-13 19:38:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:11,517 INFO L225 Difference]: With dead ends: 985 [2019-10-13 19:38:11,517 INFO L226 Difference]: Without dead ends: 524 [2019-10-13 19:38:11,519 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2019-10-13 19:38:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2019-10-13 19:38:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 485. [2019-10-13 19:38:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-13 19:38:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 561 transitions. [2019-10-13 19:38:11,586 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 561 transitions. Word has length 89 [2019-10-13 19:38:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:11,587 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 561 transitions. [2019-10-13 19:38:11,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:38:11,587 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 561 transitions. [2019-10-13 19:38:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 19:38:11,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:11,590 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 19:38:11,590 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:11,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:11,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1360854695, now seen corresponding path program 1 times [2019-10-13 19:38:11,590 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:11,591 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092496848] [2019-10-13 19:38:11,591 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:11,591 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:11,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,904 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 19:38:12,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092496848] [2019-10-13 19:38:12,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417308733] [2019-10-13 19:38:12,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:38:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:12,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-13 19:38:12,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:38:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 19:38:12,562 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:38:12,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2019-10-13 19:38:12,562 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719108343] [2019-10-13 19:38:12,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 19:38:12,563 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:12,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 19:38:12,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:38:12,564 INFO L87 Difference]: Start difference. First operand 485 states and 561 transitions. Second operand 19 states. [2019-10-13 19:38:13,414 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:14,312 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:14,636 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:15,012 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189