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_spec1_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:34:55,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:34:55,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:34:55,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:34:55,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:34:55,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:34:55,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:34:55,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:34:55,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:34:55,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:34:55,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:34:55,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:34:55,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:34:55,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:34:55,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:34:55,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:34:55,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:34:55,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:34:55,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:34:55,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:34:55,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:34:55,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:34:55,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:34:55,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:34:55,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:34:55,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:34:55,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:34:55,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:34:55,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:34:55,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:34:55,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:34:55,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:34:55,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:34:55,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:34:55,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:34:55,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:34:55,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:34:55,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:34:55,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:34:55,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:34:55,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:34:55,520 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 19:34:55,547 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:34:55,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:34:55,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:34:55,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:34:55,549 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:34:55,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:34:55,549 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:34:55,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:34:55,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:34:55,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:34:55,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:34:55,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:34:55,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:34:55,551 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:34:55,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:34:55,551 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:34:55,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:34:55,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:34:55,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:34:55,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:34:55,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:34:55,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:34:55,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:34:55,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:34:55,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:34:55,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:34:55,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:34:55,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:34:55,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:34:55,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:34:55,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:34:55,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:34:55,841 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:34:55,842 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:34:55,842 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-10-13 19:34:55,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d542898/12c49ff2bc7443eeb7080db976fbf8b3/FLAGc30ba896a [2019-10-13 19:34:56,480 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:34:56,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product60.cil.c [2019-10-13 19:34:56,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d542898/12c49ff2bc7443eeb7080db976fbf8b3/FLAGc30ba896a [2019-10-13 19:34:56,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d542898/12c49ff2bc7443eeb7080db976fbf8b3 [2019-10-13 19:34:56,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:34:56,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:34:56,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:56,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:34:56,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:34:56,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:56" (1/1) ... [2019-10-13 19:34:56,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e20f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:56, skipping insertion in model container [2019-10-13 19:34:56,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:56" (1/1) ... [2019-10-13 19:34:56,825 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:34:56,894 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:34:57,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:57,322 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:34:57,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:57,477 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:34:57,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57 WrapperNode [2019-10-13 19:34:57,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:57,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:34:57,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:34:57,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:34:57,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57" (1/1) ... [2019-10-13 19:34:57,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57" (1/1) ... [2019-10-13 19:34:57,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57" (1/1) ... [2019-10-13 19:34:57,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57" (1/1) ... [2019-10-13 19:34:57,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57" (1/1) ... [2019-10-13 19:34:57,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57" (1/1) ... [2019-10-13 19:34:57,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57" (1/1) ... [2019-10-13 19:34:57,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:34:57,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:34:57,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:34:57,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:34:57,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:34:57,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:34:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:34:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:34:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:34:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:34:57,655 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:34:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:34:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:34:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:34:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:34:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:34:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:34:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:34:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:34:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:34:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:57,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:34:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:34:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:34:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:34:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:34:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:34:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:34:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:34:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:34:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:34:57,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:34:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:34:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:34:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:34:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:34:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:34:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:34:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:34:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:34:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:34:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:34:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:34:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:34:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:34:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:34:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:34:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:34:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:34:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:34:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:34:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:34:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:34:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:34:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:34:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:34:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:34:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:34:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:34:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:34:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:34:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:34:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:34:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:34:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:34:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:34:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:34:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:34:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:34:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:34:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:34:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:34:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:34:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:34:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:34:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:34:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:34:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:34:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:34:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:34:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:34:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:34:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:34:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:34:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:34:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:34:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:34:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:34:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:34:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:34:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:34:58,793 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:34:58,794 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:34:58,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:58 BoogieIcfgContainer [2019-10-13 19:34:58,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:34:58,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:34:58,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:34:58,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:34:58,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:34:56" (1/3) ... [2019-10-13 19:34:58,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f88a83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:58, skipping insertion in model container [2019-10-13 19:34:58,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:57" (2/3) ... [2019-10-13 19:34:58,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f88a83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:58, skipping insertion in model container [2019-10-13 19:34:58,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:58" (3/3) ... [2019-10-13 19:34:58,805 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product60.cil.c [2019-10-13 19:34:58,815 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:34:58,824 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:34:58,835 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:34:58,870 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:34:58,870 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:34:58,871 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:34:58,871 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:34:58,872 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:34:58,872 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:34:58,872 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:34:58,872 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:34:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-10-13 19:34:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:34:58,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:58,919 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:34:58,924 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:58,930 INFO L82 PathProgramCache]: Analyzing trace with hash -868868404, now seen corresponding path program 1 times [2019-10-13 19:34:58,940 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:58,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105113160] [2019-10-13 19:34:58,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:58,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:58,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,674 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,772 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 19:34:59,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105113160] [2019-10-13 19:34:59,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:59,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:34:59,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710801761] [2019-10-13 19:34:59,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:34:59,782 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:59,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:34:59,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:34:59,800 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2019-10-13 19:35:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:01,126 INFO L93 Difference]: Finished difference Result 346 states and 447 transitions. [2019-10-13 19:35:01,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:35:01,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:35:01,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:01,157 INFO L225 Difference]: With dead ends: 346 [2019-10-13 19:35:01,158 INFO L226 Difference]: Without dead ends: 187 [2019-10-13 19:35:01,168 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:35:01,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-10-13 19:35:01,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 150. [2019-10-13 19:35:01,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-13 19:35:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2019-10-13 19:35:01,329 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 46 [2019-10-13 19:35:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:01,330 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2019-10-13 19:35:01,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:35:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2019-10-13 19:35:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:35:01,341 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:01,341 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] [2019-10-13 19:35:01,342 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:01,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash -276167130, now seen corresponding path program 1 times [2019-10-13 19:35:01,344 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:01,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911721243] [2019-10-13 19:35:01,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:01,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:01,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,746 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:01,781 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 19:35:01,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911721243] [2019-10-13 19:35:01,782 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:01,782 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:35:01,782 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808851179] [2019-10-13 19:35:01,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:35:01,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:01,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:35:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:35:01,785 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand 4 states. [2019-10-13 19:35:02,330 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:03,375 INFO L93 Difference]: Finished difference Result 269 states and 326 transitions. [2019-10-13 19:35:03,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:35:03,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:35:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:03,387 INFO L225 Difference]: With dead ends: 269 [2019-10-13 19:35:03,388 INFO L226 Difference]: Without dead ends: 171 [2019-10-13 19:35:03,390 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:35:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2019-10-13 19:35:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 141. [2019-10-13 19:35:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-13 19:35:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 164 transitions. [2019-10-13 19:35:03,440 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 164 transitions. Word has length 47 [2019-10-13 19:35:03,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:03,441 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 164 transitions. [2019-10-13 19:35:03,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:35:03,441 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 164 transitions. [2019-10-13 19:35:03,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:35:03,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:03,443 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 19:35:03,443 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:03,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:03,444 INFO L82 PathProgramCache]: Analyzing trace with hash 106155889, now seen corresponding path program 1 times [2019-10-13 19:35:03,444 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:03,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927474509] [2019-10-13 19:35:03,444 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:03,444 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:03,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:03,805 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:03,948 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 19:35:03,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927474509] [2019-10-13 19:35:03,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:03,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:03,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971030354] [2019-10-13 19:35:03,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:03,950 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:03,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:03,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:03,951 INFO L87 Difference]: Start difference. First operand 141 states and 164 transitions. Second operand 8 states. [2019-10-13 19:35:04,406 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:04,760 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:35:05,050 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:05,334 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:06,205 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:08,575 INFO L93 Difference]: Finished difference Result 482 states and 593 transitions. [2019-10-13 19:35:08,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:08,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-13 19:35:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:08,581 INFO L225 Difference]: With dead ends: 482 [2019-10-13 19:35:08,581 INFO L226 Difference]: Without dead ends: 365 [2019-10-13 19:35:08,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:35:08,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2019-10-13 19:35:08,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 296. [2019-10-13 19:35:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-10-13 19:35:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 356 transitions. [2019-10-13 19:35:08,657 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 356 transitions. Word has length 52 [2019-10-13 19:35:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:08,658 INFO L462 AbstractCegarLoop]: Abstraction has 296 states and 356 transitions. [2019-10-13 19:35:08,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:08,658 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 356 transitions. [2019-10-13 19:35:08,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:35:08,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:08,660 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 19:35:08,660 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:08,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1448124188, now seen corresponding path program 1 times [2019-10-13 19:35:08,661 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:08,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860075876] [2019-10-13 19:35:08,661 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:08,662 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:08,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,944 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,067 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 19:35:09,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860075876] [2019-10-13 19:35:09,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:09,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:09,068 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736189756] [2019-10-13 19:35:09,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:09,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:09,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:09,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:09,070 INFO L87 Difference]: Start difference. First operand 296 states and 356 transitions. Second operand 8 states. [2019-10-13 19:35:09,555 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:10,658 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:11,035 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:11,345 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:11,686 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:12,166 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:13,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:13,451 INFO L93 Difference]: Finished difference Result 957 states and 1227 transitions. [2019-10-13 19:35:13,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:13,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-13 19:35:13,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:13,459 INFO L225 Difference]: With dead ends: 957 [2019-10-13 19:35:13,459 INFO L226 Difference]: Without dead ends: 685 [2019-10-13 19:35:13,461 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2019-10-13 19:35:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 547. [2019-10-13 19:35:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2019-10-13 19:35:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 662 transitions. [2019-10-13 19:35:13,592 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 662 transitions. Word has length 57 [2019-10-13 19:35:13,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:13,592 INFO L462 AbstractCegarLoop]: Abstraction has 547 states and 662 transitions. [2019-10-13 19:35:13,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:13,593 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 662 transitions. [2019-10-13 19:35:13,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:35:13,595 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:13,595 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] [2019-10-13 19:35:13,596 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:13,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:13,596 INFO L82 PathProgramCache]: Analyzing trace with hash -432580704, now seen corresponding path program 1 times [2019-10-13 19:35:13,596 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:13,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260396843] [2019-10-13 19:35:13,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:13,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:13,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,913 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,000 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 19:35:14,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260396843] [2019-10-13 19:35:14,001 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:14,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:14,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088114609] [2019-10-13 19:35:14,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:14,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:14,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:14,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:14,003 INFO L87 Difference]: Start difference. First operand 547 states and 662 transitions. Second operand 9 states. [2019-10-13 19:35:14,473 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:15,568 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:15,868 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:16,136 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:16,864 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:17,182 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:18,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:18,276 INFO L93 Difference]: Finished difference Result 1505 states and 1996 transitions. [2019-10-13 19:35:18,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:35:18,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-13 19:35:18,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:18,283 INFO L225 Difference]: With dead ends: 1505 [2019-10-13 19:35:18,284 INFO L226 Difference]: Without dead ends: 982 [2019-10-13 19:35:18,286 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:35:18,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2019-10-13 19:35:18,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 795. [2019-10-13 19:35:18,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-10-13 19:35:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 971 transitions. [2019-10-13 19:35:18,487 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 971 transitions. Word has length 61 [2019-10-13 19:35:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:18,488 INFO L462 AbstractCegarLoop]: Abstraction has 795 states and 971 transitions. [2019-10-13 19:35:18,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 971 transitions. [2019-10-13 19:35:18,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 19:35:18,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:18,493 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] [2019-10-13 19:35:18,493 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:18,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:18,493 INFO L82 PathProgramCache]: Analyzing trace with hash -2030363971, now seen corresponding path program 1 times [2019-10-13 19:35:18,494 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:18,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695972505] [2019-10-13 19:35:18,494 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:18,494 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:18,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,819 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,970 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 19:35:18,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695972505] [2019-10-13 19:35:18,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:18,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:18,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512395210] [2019-10-13 19:35:18,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:18,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:18,973 INFO L87 Difference]: Start difference. First operand 795 states and 971 transitions. Second operand 9 states. [2019-10-13 19:35:20,386 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:20,665 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:35:20,958 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:21,220 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:22,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:22,555 INFO L93 Difference]: Finished difference Result 1837 states and 2468 transitions. [2019-10-13 19:35:22,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:22,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2019-10-13 19:35:22,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:22,570 INFO L225 Difference]: With dead ends: 1837 [2019-10-13 19:35:22,570 INFO L226 Difference]: Without dead ends: 1066 [2019-10-13 19:35:22,573 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:35:22,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2019-10-13 19:35:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 821. [2019-10-13 19:35:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-10-13 19:35:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2019-10-13 19:35:22,840 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 99 [2019-10-13 19:35:22,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:22,841 INFO L462 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2019-10-13 19:35:22,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2019-10-13 19:35:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 19:35:22,847 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:22,847 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] [2019-10-13 19:35:22,847 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:22,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1136877633, now seen corresponding path program 1 times [2019-10-13 19:35:22,848 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:22,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071220801] [2019-10-13 19:35:22,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:22,849 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:22,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,140 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:23,314 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 19:35:23,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071220801] [2019-10-13 19:35:23,315 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:23,315 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:35:23,315 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463646050] [2019-10-13 19:35:23,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:35:23,316 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:23,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:35:23,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:35:23,318 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 11 states. [2019-10-13 19:35:23,931 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:24,189 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:24,441 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:25,334 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:25,618 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:25,885 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:27,297 INFO L93 Difference]: Finished difference Result 1883 states and 2516 transitions. [2019-10-13 19:35:27,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:27,298 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 99 [2019-10-13 19:35:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:27,306 INFO L225 Difference]: With dead ends: 1883 [2019-10-13 19:35:27,306 INFO L226 Difference]: Without dead ends: 1086 [2019-10-13 19:35:27,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:35:27,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2019-10-13 19:35:27,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 837. [2019-10-13 19:35:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2019-10-13 19:35:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1015 transitions. [2019-10-13 19:35:27,487 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1015 transitions. Word has length 99 [2019-10-13 19:35:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:27,489 INFO L462 AbstractCegarLoop]: Abstraction has 837 states and 1015 transitions. [2019-10-13 19:35:27,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:35:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1015 transitions. [2019-10-13 19:35:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-13 19:35:27,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:27,493 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] [2019-10-13 19:35:27,493 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:27,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:27,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1144636992, now seen corresponding path program 1 times [2019-10-13 19:35:27,499 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:27,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823891676] [2019-10-13 19:35:27,500 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:27,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:27,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,901 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:28,078 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 19:35:28,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823891676] [2019-10-13 19:35:28,079 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:28,079 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:35:28,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362960940] [2019-10-13 19:35:28,080 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:35:28,081 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:28,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:35:28,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:35:28,081 INFO L87 Difference]: Start difference. First operand 837 states and 1015 transitions. Second operand 7 states. [2019-10-13 19:35:28,541 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:29,094 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:31,703 INFO L93 Difference]: Finished difference Result 2811 states and 3793 transitions. [2019-10-13 19:35:31,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:35:31,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2019-10-13 19:35:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:31,718 INFO L225 Difference]: With dead ends: 2811 [2019-10-13 19:35:31,718 INFO L226 Difference]: Without dead ends: 1998 [2019-10-13 19:35:31,722 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2019-10-13 19:35:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1675. [2019-10-13 19:35:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2019-10-13 19:35:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2053 transitions. [2019-10-13 19:35:32,109 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2053 transitions. Word has length 99 [2019-10-13 19:35:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:32,109 INFO L462 AbstractCegarLoop]: Abstraction has 1675 states and 2053 transitions. [2019-10-13 19:35:32,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:35:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2053 transitions. [2019-10-13 19:35:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:35:32,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:32,114 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] [2019-10-13 19:35:32,114 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:32,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:32,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1694878310, now seen corresponding path program 1 times [2019-10-13 19:35:32,115 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:32,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459255842] [2019-10-13 19:35:32,116 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:32,116 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:32,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,445 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,690 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 19:35:32,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459255842] [2019-10-13 19:35:32,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143113856] [2019-10-13 19:35:32,691 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 19:35:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:32,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:35:32,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:35:33,189 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 19:35:33,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:35:33,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-13 19:35:33,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076051458] [2019-10-13 19:35:33,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:33,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:33,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:33,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:33,191 INFO L87 Difference]: Start difference. First operand 1675 states and 2053 transitions. Second operand 8 states. [2019-10-13 19:35:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:33,896 INFO L93 Difference]: Finished difference Result 3258 states and 4014 transitions. [2019-10-13 19:35:33,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:35:33,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-13 19:35:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:33,907 INFO L225 Difference]: With dead ends: 3258 [2019-10-13 19:35:33,907 INFO L226 Difference]: Without dead ends: 1607 [2019-10-13 19:35:33,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:33,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2019-10-13 19:35:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1607. [2019-10-13 19:35:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1607 states. [2019-10-13 19:35:34,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 1931 transitions. [2019-10-13 19:35:34,261 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 1931 transitions. Word has length 103 [2019-10-13 19:35:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:34,262 INFO L462 AbstractCegarLoop]: Abstraction has 1607 states and 1931 transitions. [2019-10-13 19:35:34,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:34,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 1931 transitions. [2019-10-13 19:35:34,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 19:35:34,267 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:34,268 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]