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_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:36:32,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:36:32,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:36:32,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:36:32,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:36:32,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:36:32,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:36:32,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:36:32,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:36:32,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:36:32,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:36:32,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:36:32,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:36:32,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:36:32,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:36:32,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:36:32,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:36:32,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:36:32,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:36:32,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:36:32,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:36:32,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:36:32,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:36:32,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:36:32,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:36:32,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:36:32,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:36:32,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:36:32,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:36:32,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:36:32,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:36:32,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:36:32,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:36:32,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:36:32,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:36:32,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:36:32,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:36:32,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:36:32,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:36:32,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:36:32,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:36:32,526 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 19:36:32,557 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:36:32,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:36:32,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:36:32,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:36:32,564 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:36:32,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:36:32,564 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:36:32,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:36:32,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:36:32,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:36:32,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:36:32,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:36:32,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:36:32,566 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:36:32,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:36:32,566 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:36:32,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:36:32,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:36:32,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:36:32,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:36:32,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:36:32,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:36:32,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:36:32,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:36:32,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:36:32,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:36:32,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:36:32,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:36:32,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:36:32,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:36:32,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:36:32,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:36:32,894 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:36:32,894 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:36:32,895 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2019-10-13 19:36:32,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d6ea126/583f651b02ce4f01b1b8b820b105bcaf/FLAG272829402 [2019-10-13 19:36:33,537 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:36:33,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2019-10-13 19:36:33,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d6ea126/583f651b02ce4f01b1b8b820b105bcaf/FLAG272829402 [2019-10-13 19:36:33,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d6ea126/583f651b02ce4f01b1b8b820b105bcaf [2019-10-13 19:36:33,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:36:33,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:36:33,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:33,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:36:33,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:36:33,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:33" (1/1) ... [2019-10-13 19:36:33,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e957a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:33, skipping insertion in model container [2019-10-13 19:36:33,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:36:33" (1/1) ... [2019-10-13 19:36:33,848 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:36:33,906 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:36:34,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:34,331 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:36:34,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:36:34,500 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:36:34,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34 WrapperNode [2019-10-13 19:36:34,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:36:34,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:36:34,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:36:34,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:36:34,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34" (1/1) ... [2019-10-13 19:36:34,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34" (1/1) ... [2019-10-13 19:36:34,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34" (1/1) ... [2019-10-13 19:36:34,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34" (1/1) ... [2019-10-13 19:36:34,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34" (1/1) ... [2019-10-13 19:36:34,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34" (1/1) ... [2019-10-13 19:36:34,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34" (1/1) ... [2019-10-13 19:36:34,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:36:34,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:36:34,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:36:34,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:36:34,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:36:34,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:36:34,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:36:34,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:34,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:36:34,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:36:34,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:36:34,666 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:36:34,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:34,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:34,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:34,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:36:34,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:36:34,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:36:34,667 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:36:34,667 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:36:34,667 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:36:34,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:36:34,668 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:36:34,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:36:34,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:36:34,668 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:36:34,668 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:36:34,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:36:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:36:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:36:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:36:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:36:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:36:34,669 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:36:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:36:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:36:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:36:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:36:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:36:34,670 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:36:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:36:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:36:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:36:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:34,672 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:36:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:36:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:36:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:36:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:36:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:36:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:36:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:36:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:36:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:36:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:36:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:36:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:36:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:36:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:36:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:36:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:36:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:36:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:36:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:36:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:36:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:36:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:36:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:36:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:36:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:36:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:36:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:36:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:36:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:36:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:36:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:36:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:36:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:36:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:36:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:36:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:36:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:36:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:36:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:36:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:36:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:36:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:36:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:36:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:36:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:36:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:36:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:36:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:36:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:36:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:36:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:36:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:36:34,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:36:34,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:36:34,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:36:35,781 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:36:35,781 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:36:35,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:35 BoogieIcfgContainer [2019-10-13 19:36:35,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:36:35,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:36:35,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:36:35,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:36:35,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:36:33" (1/3) ... [2019-10-13 19:36:35,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1649a739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:35, skipping insertion in model container [2019-10-13 19:36:35,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:36:34" (2/3) ... [2019-10-13 19:36:35,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1649a739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:36:35, skipping insertion in model container [2019-10-13 19:36:35,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:36:35" (3/3) ... [2019-10-13 19:36:35,792 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2019-10-13 19:36:35,803 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:36:35,812 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:36:35,823 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:36:35,860 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:36:35,860 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:36:35,861 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:36:35,861 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:36:35,861 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:36:35,861 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:36:35,861 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:36:35,862 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:36:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2019-10-13 19:36:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:36:35,907 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:35,908 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:36:35,912 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:35,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:35,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1550424879, now seen corresponding path program 1 times [2019-10-13 19:36:35,929 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:35,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19116201] [2019-10-13 19:36:35,930 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:35,930 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:35,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:36,655 WARN L191 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:36,806 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 19:36:36,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19116201] [2019-10-13 19:36:36,814 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:36,814 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:36:36,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377684000] [2019-10-13 19:36:36,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:36:36,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:36,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:36:36,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:36,839 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2019-10-13 19:36:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:38,085 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2019-10-13 19:36:38,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:36:38,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-13 19:36:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:38,103 INFO L225 Difference]: With dead ends: 312 [2019-10-13 19:36:38,104 INFO L226 Difference]: Without dead ends: 174 [2019-10-13 19:36:38,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:36:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-13 19:36:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2019-10-13 19:36:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-13 19:36:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2019-10-13 19:36:38,253 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2019-10-13 19:36:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:38,254 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2019-10-13 19:36:38,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:36:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2019-10-13 19:36:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:36:38,266 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:38,266 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 19:36:38,266 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:38,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140265, now seen corresponding path program 1 times [2019-10-13 19:36:38,268 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:38,268 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355544147] [2019-10-13 19:36:38,268 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:38,268 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:38,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:38,692 WARN L191 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:38,759 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 19:36:38,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355544147] [2019-10-13 19:36:38,760 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:38,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:36:38,761 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147238099] [2019-10-13 19:36:38,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:36:38,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:38,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:36:38,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:36:38,771 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2019-10-13 19:36:39,297 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:40,380 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2019-10-13 19:36:40,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:36:40,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-13 19:36:40,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:40,384 INFO L225 Difference]: With dead ends: 253 [2019-10-13 19:36:40,384 INFO L226 Difference]: Without dead ends: 164 [2019-10-13 19:36:40,386 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:36:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-13 19:36:40,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2019-10-13 19:36:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-13 19:36:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2019-10-13 19:36:40,442 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2019-10-13 19:36:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:40,443 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2019-10-13 19:36:40,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:36:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2019-10-13 19:36:40,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:36:40,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:40,445 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 19:36:40,445 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:40,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:40,446 INFO L82 PathProgramCache]: Analyzing trace with hash 871775649, now seen corresponding path program 1 times [2019-10-13 19:36:40,446 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:40,446 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429230220] [2019-10-13 19:36:40,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:40,446 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:40,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,816 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:40,921 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 19:36:40,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429230220] [2019-10-13 19:36:40,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:40,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:36:40,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771351744] [2019-10-13 19:36:40,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:36:40,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:40,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:36:40,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:36:40,924 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2019-10-13 19:36:41,463 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:41,851 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:36:42,141 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:42,407 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:43,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:43,956 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2019-10-13 19:36:43,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:36:43,957 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2019-10-13 19:36:43,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:43,959 INFO L225 Difference]: With dead ends: 266 [2019-10-13 19:36:43,960 INFO L226 Difference]: Without dead ends: 164 [2019-10-13 19:36:43,961 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:36:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-13 19:36:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2019-10-13 19:36:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-13 19:36:44,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2019-10-13 19:36:44,001 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2019-10-13 19:36:44,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:44,001 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2019-10-13 19:36:44,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:36:44,001 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2019-10-13 19:36:44,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:36:44,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:44,004 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 19:36:44,004 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:44,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:44,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1442711131, now seen corresponding path program 1 times [2019-10-13 19:36:44,005 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:44,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8062304] [2019-10-13 19:36:44,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:44,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:44,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,388 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:44,484 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 19:36:44,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8062304] [2019-10-13 19:36:44,485 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:44,485 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:36:44,485 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295435430] [2019-10-13 19:36:44,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:36:44,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:44,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:36:44,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:36:44,487 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2019-10-13 19:36:44,921 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:46,253 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:46,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:46,988 INFO L93 Difference]: Finished difference Result 370 states and 466 transitions. [2019-10-13 19:36:46,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:36:46,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-10-13 19:36:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:46,992 INFO L225 Difference]: With dead ends: 370 [2019-10-13 19:36:46,992 INFO L226 Difference]: Without dead ends: 268 [2019-10-13 19:36:46,996 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:36:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-10-13 19:36:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2019-10-13 19:36:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2019-10-13 19:36:47,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2019-10-13 19:36:47,051 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 70 [2019-10-13 19:36:47,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:47,051 INFO L462 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2019-10-13 19:36:47,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:36:47,051 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2019-10-13 19:36:47,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:36:47,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:47,053 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 19:36:47,053 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:47,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1583652076, now seen corresponding path program 1 times [2019-10-13 19:36:47,054 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:47,054 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255442182] [2019-10-13 19:36:47,054 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:47,054 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:47,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,427 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:47,551 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 19:36:47,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255442182] [2019-10-13 19:36:47,551 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:47,552 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:36:47,552 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527155808] [2019-10-13 19:36:47,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:36:47,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:47,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:36:47,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:36:47,555 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 9 states. [2019-10-13 19:36:48,227 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:49,417 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:49,787 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:50,376 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:50,666 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:51,921 INFO L93 Difference]: Finished difference Result 653 states and 819 transitions. [2019-10-13 19:36:51,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:36:51,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-10-13 19:36:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:51,926 INFO L225 Difference]: With dead ends: 653 [2019-10-13 19:36:51,926 INFO L226 Difference]: Without dead ends: 462 [2019-10-13 19:36:51,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:36:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-10-13 19:36:52,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2019-10-13 19:36:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2019-10-13 19:36:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 442 transitions. [2019-10-13 19:36:52,012 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 442 transitions. Word has length 84 [2019-10-13 19:36:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:52,013 INFO L462 AbstractCegarLoop]: Abstraction has 386 states and 442 transitions. [2019-10-13 19:36:52,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:36:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 442 transitions. [2019-10-13 19:36:52,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:36:52,015 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:52,015 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 19:36:52,015 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:52,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:52,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1422526648, now seen corresponding path program 1 times [2019-10-13 19:36:52,016 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:52,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106609817] [2019-10-13 19:36:52,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:52,017 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:52,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,336 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:52,495 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 19:36:52,496 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106609817] [2019-10-13 19:36:52,496 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:52,496 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:36:52,496 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951953932] [2019-10-13 19:36:52,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:36:52,497 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:52,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:36:52,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:36:52,498 INFO L87 Difference]: Start difference. First operand 386 states and 442 transitions. Second operand 10 states. [2019-10-13 19:36:53,038 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:54,345 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:36:55,516 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:55,784 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:56,080 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:36:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:36:56,584 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2019-10-13 19:36:56,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 19:36:56,585 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-13 19:36:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:36:56,590 INFO L225 Difference]: With dead ends: 858 [2019-10-13 19:36:56,590 INFO L226 Difference]: Without dead ends: 500 [2019-10-13 19:36:56,592 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:36:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-10-13 19:36:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2019-10-13 19:36:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-10-13 19:36:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 439 transitions. [2019-10-13 19:36:56,673 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 439 transitions. Word has length 88 [2019-10-13 19:36:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:36:56,673 INFO L462 AbstractCegarLoop]: Abstraction has 385 states and 439 transitions. [2019-10-13 19:36:56,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:36:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 439 transitions. [2019-10-13 19:36:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:36:56,675 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:36:56,676 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:36:56,676 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:36:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:36:56,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1956386739, now seen corresponding path program 1 times [2019-10-13 19:36:56,677 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:36:56,677 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809084849] [2019-10-13 19:36:56,677 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:56,677 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:36:56,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:36:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,944 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:36:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:36:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:36:57,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809084849] [2019-10-13 19:36:57,111 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:36:57,111 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:36:57,111 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067354760] [2019-10-13 19:36:57,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:36:57,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:36:57,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:36:57,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:36:57,114 INFO L87 Difference]: Start difference. First operand 385 states and 439 transitions. Second operand 10 states. [2019-10-13 19:36:58,407 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:58,674 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-10-13 19:36:58,963 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:36:59,216 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:00,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:00,512 INFO L93 Difference]: Finished difference Result 865 states and 1088 transitions. [2019-10-13 19:37:00,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:37:00,513 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2019-10-13 19:37:00,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:00,517 INFO L225 Difference]: With dead ends: 865 [2019-10-13 19:37:00,517 INFO L226 Difference]: Without dead ends: 508 [2019-10-13 19:37:00,519 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:37:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-10-13 19:37:00,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 395. [2019-10-13 19:37:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2019-10-13 19:37:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2019-10-13 19:37:00,604 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 104 [2019-10-13 19:37:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:00,605 INFO L462 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2019-10-13 19:37:00,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:00,605 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2019-10-13 19:37:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:37:00,607 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:00,607 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:00,607 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash -28114037, now seen corresponding path program 1 times [2019-10-13 19:37:00,608 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:00,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654395743] [2019-10-13 19:37:00,608 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:00,608 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:00,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,882 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:37:01,053 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654395743] [2019-10-13 19:37:01,053 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:01,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:37:01,054 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738874161] [2019-10-13 19:37:01,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:37:01,059 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:01,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:37:01,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:01,060 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 12 states. [2019-10-13 19:37:01,676 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:01,947 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:02,212 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:02,960 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:03,247 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:03,529 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:04,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:04,989 INFO L93 Difference]: Finished difference Result 885 states and 1110 transitions. [2019-10-13 19:37:04,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:37:04,990 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2019-10-13 19:37:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:04,994 INFO L225 Difference]: With dead ends: 885 [2019-10-13 19:37:04,994 INFO L226 Difference]: Without dead ends: 518 [2019-10-13 19:37:04,996 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:37:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2019-10-13 19:37:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2019-10-13 19:37:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2019-10-13 19:37:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 457 transitions. [2019-10-13 19:37:05,062 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 457 transitions. Word has length 104 [2019-10-13 19:37:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:05,062 INFO L462 AbstractCegarLoop]: Abstraction has 403 states and 457 transitions. [2019-10-13 19:37:05,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:37:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 457 transitions. [2019-10-13 19:37:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:37:05,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:05,064 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:05,065 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:05,065 INFO L82 PathProgramCache]: Analyzing trace with hash -268654166, now seen corresponding path program 1 times [2019-10-13 19:37:05,065 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:05,065 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675283338] [2019-10-13 19:37:05,066 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:05,066 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:05,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,386 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:37:05,519 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675283338] [2019-10-13 19:37:05,519 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:05,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:05,520 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992341778] [2019-10-13 19:37:05,521 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:05,521 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:05,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:05,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:05,522 INFO L87 Difference]: Start difference. First operand 403 states and 457 transitions. Second operand 8 states. [2019-10-13 19:37:06,182 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:06,762 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:09,308 INFO L93 Difference]: Finished difference Result 1233 states and 1597 transitions. [2019-10-13 19:37:09,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 19:37:09,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-10-13 19:37:09,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:09,315 INFO L225 Difference]: With dead ends: 1233 [2019-10-13 19:37:09,315 INFO L226 Difference]: Without dead ends: 858 [2019-10-13 19:37:09,317 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-13 19:37:09,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2019-10-13 19:37:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 713. [2019-10-13 19:37:09,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2019-10-13 19:37:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2019-10-13 19:37:09,482 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 104 [2019-10-13 19:37:09,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:09,483 INFO L462 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2019-10-13 19:37:09,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:09,483 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2019-10-13 19:37:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-13 19:37:09,485 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:09,486 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:09,486 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:09,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1852641244, now seen corresponding path program 1 times [2019-10-13 19:37:09,487 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:09,487 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347113339] [2019-10-13 19:37:09,487 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:09,487 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:09,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,793 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:37:10,197 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347113339] [2019-10-13 19:37:10,198 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567543039] [2019-10-13 19:37:10,198 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 19:37:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:10,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:37:10,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:37:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:10,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:37:10,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-10-13 19:37:10,608 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035531657] [2019-10-13 19:37:10,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:10,609 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:10,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:10,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:37:10,610 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 8 states. [2019-10-13 19:37:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:11,042 INFO L93 Difference]: Finished difference Result 1363 states and 1606 transitions. [2019-10-13 19:37:11,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:37:11,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-10-13 19:37:11,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:11,048 INFO L225 Difference]: With dead ends: 1363 [2019-10-13 19:37:11,048 INFO L226 Difference]: Without dead ends: 678 [2019-10-13 19:37:11,051 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:37:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2019-10-13 19:37:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 678. [2019-10-13 19:37:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2019-10-13 19:37:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 779 transitions. [2019-10-13 19:37:11,176 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 779 transitions. Word has length 108 [2019-10-13 19:37:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:11,177 INFO L462 AbstractCegarLoop]: Abstraction has 678 states and 779 transitions. [2019-10-13 19:37:11,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 779 transitions. [2019-10-13 19:37:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 19:37:11,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:11,180 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]