/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:19:21,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:19:21,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:19:21,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:19:21,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:19:21,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:19:21,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:19:21,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:19:21,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:19:21,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:19:21,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:19:21,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:19:21,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:19:21,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:19:21,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:19:21,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:19:21,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:19:21,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:19:21,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:19:21,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:19:21,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:19:21,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:19:21,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:19:21,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:19:21,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:19:21,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:19:21,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:19:21,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:19:21,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:19:21,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:19:21,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:19:21,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:19:21,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:19:21,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:19:21,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:19:21,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:19:21,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:19:21,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:19:21,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:19:21,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:19:21,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:19:21,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:19:21,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:19:21,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:19:21,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:19:21,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:19:21,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:19:21,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:19:21,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:19:21,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:19:21,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:19:21,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:19:21,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:19:21,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:19:21,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:19:21,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:19:21,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:19:21,480 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:19:21,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:19:21,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:19:21,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:19:21,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:19:21,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:19:21,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:19:21,481 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:19:21,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:19:21,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:19:21,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:19:21,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:19:21,892 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:19:21,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2020-10-23 20:19:21,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f9561b5a/1dc1aa403f764a6f966601ce1271d90d/FLAG0fce023a7 [2020-10-23 20:19:22,640 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:19:22,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2020-10-23 20:19:22,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f9561b5a/1dc1aa403f764a6f966601ce1271d90d/FLAG0fce023a7 [2020-10-23 20:19:22,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f9561b5a/1dc1aa403f764a6f966601ce1271d90d [2020-10-23 20:19:22,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:19:22,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:19:22,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:22,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:19:22,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:19:22,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:22" (1/1) ... [2020-10-23 20:19:22,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45530abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:22, skipping insertion in model container [2020-10-23 20:19:22,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:22" (1/1) ... [2020-10-23 20:19:22,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:19:23,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:19:23,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:23,434 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:19:23,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:19:23,591 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:19:23,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23 WrapperNode [2020-10-23 20:19:23,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:19:23,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:19:23,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:19:23,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:19:23,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23" (1/1) ... [2020-10-23 20:19:23,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23" (1/1) ... [2020-10-23 20:19:23,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23" (1/1) ... [2020-10-23 20:19:23,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23" (1/1) ... [2020-10-23 20:19:23,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23" (1/1) ... [2020-10-23 20:19:23,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23" (1/1) ... [2020-10-23 20:19:23,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23" (1/1) ... [2020-10-23 20:19:23,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:19:23,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:19:23,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:19:23,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:19:23,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23" (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 [2020-10-23 20:19:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:19:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:19:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:19:23,820 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 20:19:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 20:19:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 20:19:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 20:19:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 20:19:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 20:19:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 20:19:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 20:19:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 20:19:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 20:19:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 20:19:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 20:19:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 20:19:23,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 20:19:23,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-10-23 20:19:23,857 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 20:19:23,857 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 20:19:23,857 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 20:19:23,857 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 20:19:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 20:19:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 20:19:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 20:19:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 20:19:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 20:19:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-10-23 20:19:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-23 20:19:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:23,859 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 20:19:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 20:19:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 20:19:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 20:19:23,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:19:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:19:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:19:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:19:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:19:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:19:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:19:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 20:19:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 20:19:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 20:19:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 20:19:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 20:19:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:19:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:19:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 20:19:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:19:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:19:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:19:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:19:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 20:19:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:19:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 20:19:23,864 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 20:19:23,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:19:23,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 20:19:23,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 20:19:23,864 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 20:19:23,864 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 20:19:23,864 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 20:19:23,864 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 20:19:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 20:19:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 20:19:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 20:19:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-10-23 20:19:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-23 20:19:23,865 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 20:19:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 20:19:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 20:19:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 20:19:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 20:19:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 20:19:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 20:19:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-10-23 20:19:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-10-23 20:19:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 20:19:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 20:19:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-10-23 20:19:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 20:19:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-10-23 20:19:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 20:19:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 20:19:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 20:19:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:19:23,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:19:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:19:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:19:25,634 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:19:25,635 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 20:19:25,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:25 BoogieIcfgContainer [2020-10-23 20:19:25,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:19:25,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:19:25,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:19:25,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:19:25,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:19:22" (1/3) ... [2020-10-23 20:19:25,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd1ee9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:25, skipping insertion in model container [2020-10-23 20:19:25,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:23" (2/3) ... [2020-10-23 20:19:25,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd1ee9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:19:25, skipping insertion in model container [2020-10-23 20:19:25,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:19:25" (3/3) ... [2020-10-23 20:19:25,648 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product34.cil.c [2020-10-23 20:19:25,660 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:19:25,665 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 20:19:25,678 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 20:19:25,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:19:25,704 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:19:25,704 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:19:25,704 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:19:25,704 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:19:25,704 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:19:25,705 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:19:25,705 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:19:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-10-23 20:19:25,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-23 20:19:25,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:25,753 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:25,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:25,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:25,761 INFO L82 PathProgramCache]: Analyzing trace with hash 985305186, now seen corresponding path program 1 times [2020-10-23 20:19:25,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:25,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841397608] [2020-10-23 20:19:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:25,845 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,801 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-23 20:19:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-23 20:19:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-23 20:19:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:27,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841397608] [2020-10-23 20:19:27,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:27,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:19:27,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193371263] [2020-10-23 20:19:27,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:19:27,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:27,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:19:27,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:27,033 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-10-23 20:19:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:28,612 INFO L93 Difference]: Finished difference Result 457 states and 537 transitions. [2020-10-23 20:19:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:19:28,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-23 20:19:28,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:28,646 INFO L225 Difference]: With dead ends: 457 [2020-10-23 20:19:28,646 INFO L226 Difference]: Without dead ends: 294 [2020-10-23 20:19:28,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:19:28,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-23 20:19:28,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 250. [2020-10-23 20:19:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-23 20:19:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2020-10-23 20:19:28,841 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 166 [2020-10-23 20:19:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:28,842 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2020-10-23 20:19:28,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:19:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2020-10-23 20:19:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-23 20:19:28,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:28,848 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:28,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:19:28,849 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:28,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:28,850 INFO L82 PathProgramCache]: Analyzing trace with hash 828167919, now seen corresponding path program 1 times [2020-10-23 20:19:28,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:28,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283987395] [2020-10-23 20:19:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:28,856 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,392 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:29,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:19:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-23 20:19:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:19:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:29,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283987395] [2020-10-23 20:19:29,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:29,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:19:29,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212955577] [2020-10-23 20:19:29,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:19:29,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:29,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:19:29,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:19:29,576 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 5 states. [2020-10-23 20:19:30,451 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:31,442 INFO L93 Difference]: Finished difference Result 379 states and 425 transitions. [2020-10-23 20:19:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:19:31,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-23 20:19:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:31,448 INFO L225 Difference]: With dead ends: 379 [2020-10-23 20:19:31,448 INFO L226 Difference]: Without dead ends: 283 [2020-10-23 20:19:31,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:19:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-23 20:19:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2020-10-23 20:19:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-23 20:19:31,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 257 transitions. [2020-10-23 20:19:31,538 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 257 transitions. Word has length 167 [2020-10-23 20:19:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:31,539 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 257 transitions. [2020-10-23 20:19:31,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:19:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 257 transitions. [2020-10-23 20:19:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 20:19:31,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:31,542 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:31,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:19:31,543 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:31,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1337962724, now seen corresponding path program 1 times [2020-10-23 20:19:31,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:31,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317893124] [2020-10-23 20:19:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:31,548 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,045 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:19:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:19:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 20:19:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-23 20:19:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:32,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317893124] [2020-10-23 20:19:32,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:32,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:19:32,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60730545] [2020-10-23 20:19:32,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:19:32,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:32,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:19:32,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:19:32,249 INFO L87 Difference]: Start difference. First operand 240 states and 257 transitions. Second operand 11 states. [2020-10-23 20:19:33,093 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:33,535 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:19:33,951 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-23 20:19:34,378 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:34,804 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:35,205 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:37,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:37,027 INFO L93 Difference]: Finished difference Result 426 states and 490 transitions. [2020-10-23 20:19:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:19:37,028 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-10-23 20:19:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:37,033 INFO L225 Difference]: With dead ends: 426 [2020-10-23 20:19:37,033 INFO L226 Difference]: Without dead ends: 306 [2020-10-23 20:19:37,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:19:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-23 20:19:37,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 240. [2020-10-23 20:19:37,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-23 20:19:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 256 transitions. [2020-10-23 20:19:37,122 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 256 transitions. Word has length 180 [2020-10-23 20:19:37,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:37,123 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 256 transitions. [2020-10-23 20:19:37,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:19:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 256 transitions. [2020-10-23 20:19:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-23 20:19:37,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:37,126 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:37,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:19:37,126 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:37,127 INFO L82 PathProgramCache]: Analyzing trace with hash 273023405, now seen corresponding path program 1 times [2020-10-23 20:19:37,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:37,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813533875] [2020-10-23 20:19:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:37,131 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,572 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:19:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:19:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:19:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 20:19:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-23 20:19:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:37,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813533875] [2020-10-23 20:19:37,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:37,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:19:37,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346627779] [2020-10-23 20:19:37,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:19:37,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:37,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:19:37,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:19:37,781 INFO L87 Difference]: Start difference. First operand 240 states and 256 transitions. Second operand 8 states. [2020-10-23 20:19:38,470 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:40,946 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:41,582 INFO L93 Difference]: Finished difference Result 608 states and 725 transitions. [2020-10-23 20:19:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:19:41,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 188 [2020-10-23 20:19:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:41,589 INFO L225 Difference]: With dead ends: 608 [2020-10-23 20:19:41,589 INFO L226 Difference]: Without dead ends: 488 [2020-10-23 20:19:41,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:19:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-10-23 20:19:41,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 348. [2020-10-23 20:19:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-10-23 20:19:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 377 transitions. [2020-10-23 20:19:41,725 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 377 transitions. Word has length 188 [2020-10-23 20:19:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:41,726 INFO L481 AbstractCegarLoop]: Abstraction has 348 states and 377 transitions. [2020-10-23 20:19:41,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:19:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 377 transitions. [2020-10-23 20:19:41,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 20:19:41,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:41,729 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:41,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:19:41,730 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:41,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:41,731 INFO L82 PathProgramCache]: Analyzing trace with hash 668365721, now seen corresponding path program 1 times [2020-10-23 20:19:41,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:41,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385287496] [2020-10-23 20:19:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:41,734 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,160 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:42,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:19:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:19:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:19:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:19:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:19:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 20:19:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 20:19:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 20:19:42,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385287496] [2020-10-23 20:19:42,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:42,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:19:42,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549942837] [2020-10-23 20:19:42,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:19:42,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:42,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:19:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:19:42,484 INFO L87 Difference]: Start difference. First operand 348 states and 377 transitions. Second operand 11 states. [2020-10-23 20:19:43,252 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:44,930 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:45,353 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:19:45,798 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:46,216 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:46,674 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:19:47,091 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:49,085 INFO L93 Difference]: Finished difference Result 1004 states and 1247 transitions. [2020-10-23 20:19:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 20:19:49,086 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 212 [2020-10-23 20:19:49,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:49,093 INFO L225 Difference]: With dead ends: 1004 [2020-10-23 20:19:49,093 INFO L226 Difference]: Without dead ends: 776 [2020-10-23 20:19:49,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2020-10-23 20:19:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-10-23 20:19:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 536. [2020-10-23 20:19:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-23 20:19:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 592 transitions. [2020-10-23 20:19:49,354 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 592 transitions. Word has length 212 [2020-10-23 20:19:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:49,354 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 592 transitions. [2020-10-23 20:19:49,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:19:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 592 transitions. [2020-10-23 20:19:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-23 20:19:49,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:49,359 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:49,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:19:49,359 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1495478884, now seen corresponding path program 1 times [2020-10-23 20:19:49,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:49,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576794029] [2020-10-23 20:19:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:49,364 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,772 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:49,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:19:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:19:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:19:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:19:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:19:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 20:19:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-23 20:19:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:49,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:19:49,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576794029] [2020-10-23 20:19:49,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:49,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:19:49,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118055146] [2020-10-23 20:19:49,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:19:49,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:49,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:19:49,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:19:49,987 INFO L87 Difference]: Start difference. First operand 536 states and 592 transitions. Second operand 11 states. [2020-10-23 20:19:50,746 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:51,863 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:52,248 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:53,404 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:19:53,801 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:54,259 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:19:55,187 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:55,570 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:19:55,939 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:19:56,643 INFO L93 Difference]: Finished difference Result 1185 states and 1417 transitions. [2020-10-23 20:19:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-23 20:19:56,643 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 212 [2020-10-23 20:19:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:19:56,649 INFO L225 Difference]: With dead ends: 1185 [2020-10-23 20:19:56,650 INFO L226 Difference]: Without dead ends: 769 [2020-10-23 20:19:56,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-10-23 20:19:56,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-23 20:19:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 534. [2020-10-23 20:19:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-10-23 20:19:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 586 transitions. [2020-10-23 20:19:56,879 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 586 transitions. Word has length 212 [2020-10-23 20:19:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:19:56,880 INFO L481 AbstractCegarLoop]: Abstraction has 534 states and 586 transitions. [2020-10-23 20:19:56,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:19:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 586 transitions. [2020-10-23 20:19:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-23 20:19:56,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:19:56,885 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:19:56,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:19:56,886 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:19:56,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:19:56,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1614879162, now seen corresponding path program 1 times [2020-10-23 20:19:56,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:19:56,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913311134] [2020-10-23 20:19:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:19:56,893 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:19:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,255 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:19:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:19:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:19:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:19:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:19:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:19:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:19:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:19:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:19:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:19:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:19:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:19:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:19:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-23 20:19:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-23 20:19:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:19:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:19:57,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913311134] [2020-10-23 20:19:57,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:19:57,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:19:57,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404453000] [2020-10-23 20:19:57,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:19:57,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:19:57,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:19:57,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:19:57,507 INFO L87 Difference]: Start difference. First operand 534 states and 586 transitions. Second operand 11 states. [2020-10-23 20:19:59,185 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:19:59,574 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:19:59,978 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-23 20:20:00,379 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:00,785 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:01,146 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:02,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:02,128 INFO L93 Difference]: Finished difference Result 1189 states and 1417 transitions. [2020-10-23 20:20:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 20:20:02,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 213 [2020-10-23 20:20:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:02,135 INFO L225 Difference]: With dead ends: 1189 [2020-10-23 20:20:02,135 INFO L226 Difference]: Without dead ends: 775 [2020-10-23 20:20:02,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:20:02,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-10-23 20:20:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 550. [2020-10-23 20:20:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-23 20:20:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 602 transitions. [2020-10-23 20:20:02,382 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 602 transitions. Word has length 213 [2020-10-23 20:20:02,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:02,383 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 602 transitions. [2020-10-23 20:20:02,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:20:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 602 transitions. [2020-10-23 20:20:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-23 20:20:02,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:02,386 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:02,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:20:02,386 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:02,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:02,387 INFO L82 PathProgramCache]: Analyzing trace with hash 641008986, now seen corresponding path program 1 times [2020-10-23 20:20:02,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:02,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647788447] [2020-10-23 20:20:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:02,390 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,775 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:02,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-23 20:20:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-23 20:20:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-23 20:20:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:02,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-23 20:20:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:20:03,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647788447] [2020-10-23 20:20:03,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:03,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:20:03,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450446553] [2020-10-23 20:20:03,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:20:03,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:20:03,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:20:03,032 INFO L87 Difference]: Start difference. First operand 550 states and 602 transitions. Second operand 14 states. [2020-10-23 20:20:03,818 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:04,204 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-23 20:20:04,590 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:04,974 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:05,344 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:06,592 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:06,964 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:07,344 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:07,749 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-23 20:20:08,112 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:09,466 INFO L93 Difference]: Finished difference Result 1055 states and 1246 transitions. [2020-10-23 20:20:09,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 20:20:09,467 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 213 [2020-10-23 20:20:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:09,472 INFO L225 Difference]: With dead ends: 1055 [2020-10-23 20:20:09,472 INFO L226 Difference]: Without dead ends: 625 [2020-10-23 20:20:09,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-10-23 20:20:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-10-23 20:20:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 462. [2020-10-23 20:20:09,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-23 20:20:09,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 496 transitions. [2020-10-23 20:20:09,679 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 496 transitions. Word has length 213 [2020-10-23 20:20:09,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:09,680 INFO L481 AbstractCegarLoop]: Abstraction has 462 states and 496 transitions. [2020-10-23 20:20:09,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:20:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 496 transitions. [2020-10-23 20:20:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-23 20:20:09,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:09,682 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:09,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:20:09,683 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:09,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:09,683 INFO L82 PathProgramCache]: Analyzing trace with hash -168545628, now seen corresponding path program 1 times [2020-10-23 20:20:09,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:09,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261288165] [2020-10-23 20:20:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:09,687 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:20:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,160 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 20:20:10,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-23 20:20:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 20:20:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-23 20:20:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 20:20:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 20:20:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 20:20:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-23 20:20:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 20:20:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:20:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-23 20:20:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:20:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 20:20:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:20:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-23 20:20:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-23 20:20:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:20:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:20:10,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261288165] [2020-10-23 20:20:10,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:20:10,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:20:10,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887303132] [2020-10-23 20:20:10,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:20:10,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:20:10,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:20:10,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:20:10,491 INFO L87 Difference]: Start difference. First operand 462 states and 496 transitions. Second operand 15 states. [2020-10-23 20:20:11,560 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 207 [2020-10-23 20:20:12,588 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:14,697 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2020-10-23 20:20:15,484 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2020-10-23 20:20:15,948 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:16,377 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:17,203 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 210 [2020-10-23 20:20:17,637 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:18,109 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-23 20:20:18,527 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:20,453 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 20:20:20,854 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 20:20:21,289 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 20:20:22,224 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 207 [2020-10-23 20:20:23,748 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 209 [2020-10-23 20:20:24,553 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:20:25,470 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-10-23 20:20:26,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:20:26,469 INFO L93 Difference]: Finished difference Result 1408 states and 1671 transitions. [2020-10-23 20:20:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-23 20:20:26,470 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 218 [2020-10-23 20:20:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:20:26,478 INFO L225 Difference]: With dead ends: 1408 [2020-10-23 20:20:26,479 INFO L226 Difference]: Without dead ends: 1165 [2020-10-23 20:20:26,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=726, Invalid=2814, Unknown=0, NotChecked=0, Total=3540 [2020-10-23 20:20:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2020-10-23 20:20:26,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 885. [2020-10-23 20:20:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-10-23 20:20:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 955 transitions. [2020-10-23 20:20:26,912 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 955 transitions. Word has length 218 [2020-10-23 20:20:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:20:26,912 INFO L481 AbstractCegarLoop]: Abstraction has 885 states and 955 transitions. [2020-10-23 20:20:26,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:20:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 955 transitions. [2020-10-23 20:20:26,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-23 20:20:26,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:20:26,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:20:26,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:20:26,916 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr1ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr0ASSERT_VIOLATIONERROR_FUNCTION, __utac__get_this_argtypeErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:20:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:20:26,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1530016160, now seen corresponding path program 1 times [2020-10-23 20:20:26,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:20:26,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842895904] [2020-10-23 20:20:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:20:27,277 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2020-10-23 20:20:27,673 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-23 20:20:28,053 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-23 20:20:28,411 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-23 20:20:28,790 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-23 20:20:29,237 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2020-10-23 20:20:29,344 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-23 20:20:29,663 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-23 20:20:30,084 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2020-10-23 20:20:30,193 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-23 20:20:30,479 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-23 20:20:30,850 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-10-23 20:20:31,223 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-23 20:20:31,614 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-10-23 20:20:32,040 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-10-23 20:20:32,150 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-23 20:20:32,490 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2020-10-23 20:20:32,597 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-23 20:20:33,203 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:33,796 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:34,373 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:34,974 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:34,979 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:35,934 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 208 [2020-10-23 20:20:36,886 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 208 [2020-10-23 20:20:36,896 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:37,727 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:20:38,499 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:20:38,504 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:39,336 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 208 [2020-10-23 20:20:40,175 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 208 [2020-10-23 20:20:40,185 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:40,934 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:20:41,679 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 205 [2020-10-23 20:20:41,691 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:42,238 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:20:42,816 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:20:43,367 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:20:43,945 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-23 20:20:43,949 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:44,754 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 213 [2020-10-23 20:20:45,574 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 213 [2020-10-23 20:20:45,583 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:46,154 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:46,735 WARN L193 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:47,286 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:47,849 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:47,852 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:48,613 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 212 [2020-10-23 20:20:49,360 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 212 [2020-10-23 20:20:49,369 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:50,151 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 213 [2020-10-23 20:20:50,900 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 213 [2020-10-23 20:20:50,906 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:51,652 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:20:52,432 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-10-23 20:20:52,437 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:53,007 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 161 [2020-10-23 20:20:53,595 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:20:54,185 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-23 20:20:54,733 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 161 [2020-10-23 20:20:54,736 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:55,272 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2020-10-23 20:20:55,827 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 158 [2020-10-23 20:20:56,374 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2020-10-23 20:20:56,912 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 159 [2020-10-23 20:20:56,914 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:57,467 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:58,032 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-23 20:20:58,593 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 163 [2020-10-23 20:20:59,182 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2020-10-23 20:20:59,184 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:20:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:20:59,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:20:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:20:59,551 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:20:59,760 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:20:59,760 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:20:59,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:20:59,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:20:59 BoogieIcfgContainer [2020-10-23 20:20:59,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:20:59,826 INFO L168 Benchmark]: Toolchain (without parser) took 96883.67 ms. Allocated memory was 155.2 MB in the beginning and 528.5 MB in the end (delta: 373.3 MB). Free memory was 129.4 MB in the beginning and 448.4 MB in the end (delta: -319.0 MB). Peak memory consumption was 330.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:20:59,827 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:20:59,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.22 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 108.1 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:20:59,831 INFO L168 Benchmark]: Boogie Preprocessor took 139.46 ms. Allocated memory is still 155.2 MB. Free memory was 108.1 MB in the beginning and 104.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:20:59,832 INFO L168 Benchmark]: RCFGBuilder took 1903.67 ms. Allocated memory was 155.2 MB in the beginning and 207.6 MB in the end (delta: 52.4 MB). Free memory was 104.2 MB in the beginning and 142.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:20:59,832 INFO L168 Benchmark]: TraceAbstraction took 94176.25 ms. Allocated memory was 207.6 MB in the beginning and 528.5 MB in the end (delta: 320.9 MB). Free memory was 142.2 MB in the beginning and 448.9 MB in the end (delta: -306.8 MB). Peak memory consumption was 289.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:20:59,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 155.2 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 645.22 ms. Allocated memory is still 155.2 MB. Free memory was 128.7 MB in the beginning and 108.1 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 139.46 ms. Allocated memory is still 155.2 MB. Free memory was 108.1 MB in the beginning and 104.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1903.67 ms. Allocated memory was 155.2 MB in the beginning and 207.6 MB in the end (delta: 52.4 MB). Free memory was 104.2 MB in the beginning and 142.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 94176.25 ms. Allocated memory was 207.6 MB in the beginning and 528.5 MB in the end (delta: 320.9 MB). Free memory was 142.2 MB in the beginning and 448.9 MB in the end (delta: -306.8 MB). Peak memory consumption was 289.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L258] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L462] int waterLevel = 1; [L463] int methaneLevelCritical = 0; [L630] int pumpRunning = 0; [L631] int systemActive = 1; [L795] int switchedOnBeforeTS ; [L844] int cleanupTimeShifts = 4; [L918] int retValue_acc ; [L919] int tmp ; [L923] FCALL select_helpers() [L924] FCALL select_features() [L925] CALL, EXPR valid_product() [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L925] RET, EXPR valid_product() [L925] tmp = valid_product() [L927] COND TRUE \read(tmp) [L929] FCALL setup() [L930] CALL runTest() [L911] CALL __utac_acc__Specification5_spec__1() [L800] switchedOnBeforeTS = 0 [L911] RET __utac_acc__Specification5_spec__1() [L912] CALL test() [L560] int splverifierCounter ; [L561] int tmp ; [L562] int tmp___0 ; [L563] int tmp___1 ; [L564] int tmp___2 ; [L567] splverifierCounter = 0 [L569] COND TRUE 1 [L571] COND TRUE splverifierCounter < 4 [L577] tmp = __VERIFIER_nondet_int() [L579] COND TRUE \read(tmp) [L581] CALL waterRise() [L480] COND TRUE waterLevel < 2 [L481] waterLevel = waterLevel + 1 [L581] RET waterRise() [L587] tmp___0 = __VERIFIER_nondet_int() [L589] COND FALSE !(\read(tmp___0)) [L597] tmp___2 = __VERIFIER_nondet_int() [L599] COND TRUE \read(tmp___2) [L601] CALL startSystem() [L790] systemActive = 1 [L601] RET startSystem() [L614] CALL timeShift() [L640] CALL __utac_acc__Specification5_spec__2() [L809] CALL, EXPR isPumpRunning() [L723] int retValue_acc ; [L726] retValue_acc = pumpRunning [L727] return (retValue_acc); [L809] RET, EXPR isPumpRunning() [L809] switchedOnBeforeTS = isPumpRunning() [L640] RET __utac_acc__Specification5_spec__2() [L642] COND FALSE !(\read(pumpRunning)) [L649] COND TRUE \read(systemActive) [L651] CALL processEnvironment() [L671] int tmp ; [L674] COND TRUE ! pumpRunning [L676] CALL, EXPR isHighWaterLevel() [L768] int retValue_acc ; [L769] int tmp ; [L770] int tmp___0 ; [L774] CALL, EXPR isHighWaterSensorDry() [L542] int retValue_acc ; [L545] COND FALSE !(waterLevel < 2) [L549] retValue_acc = 0 [L550] return (retValue_acc); [L774] RET, EXPR isHighWaterSensorDry() [L774] tmp = isHighWaterSensorDry() [L776] COND FALSE !(\read(tmp)) [L779] tmp___0 = 1 [L781] retValue_acc = tmp___0 [L782] return (retValue_acc); [L676] RET, EXPR isHighWaterLevel() [L676] tmp = isHighWaterLevel() [L678] COND TRUE \read(tmp) [L680] CALL activatePump() [L699] pumpRunning = 1 [L680] RET activatePump() [L651] RET processEnvironment() [L657] CALL __utac_acc__Specification5_spec__3() [L815] int tmp ; [L816] int tmp___0 ; [L820] CALL, EXPR getWaterLevel() [L533] int retValue_acc ; [L536] retValue_acc = waterLevel [L537] return (retValue_acc); [L820] RET, EXPR getWaterLevel() [L820] tmp = getWaterLevel() [L822] COND FALSE !(tmp != 2) [L657] RET __utac_acc__Specification5_spec__3() [L614] RET timeShift() [L569] COND TRUE 1 [L571] COND TRUE splverifierCounter < 4 [L577] tmp = __VERIFIER_nondet_int() [L579] COND FALSE !(\read(tmp)) [L587] tmp___0 = __VERIFIER_nondet_int() [L589] COND FALSE !(\read(tmp___0)) [L597] tmp___2 = __VERIFIER_nondet_int() [L599] COND TRUE \read(tmp___2) [L601] CALL startSystem() [L790] systemActive = 1 [L601] RET startSystem() [L614] CALL timeShift() [L640] CALL __utac_acc__Specification5_spec__2() [L809] CALL, EXPR isPumpRunning() [L723] int retValue_acc ; [L726] retValue_acc = pumpRunning [L727] return (retValue_acc); [L809] RET, EXPR isPumpRunning() [L809] switchedOnBeforeTS = isPumpRunning() [L640] RET __utac_acc__Specification5_spec__2() [L642] COND TRUE \read(pumpRunning) [L644] CALL lowerWaterLevel() [L468] COND TRUE waterLevel > 0 [L469] waterLevel = waterLevel - 1 [L644] RET lowerWaterLevel() [L649] COND TRUE \read(systemActive) [L651] CALL processEnvironment() [L671] int tmp ; [L674] COND FALSE !(! pumpRunning) [L689] FCALL processEnvironment__wrappee__base() [L651] RET processEnvironment() [L657] CALL __utac_acc__Specification5_spec__3() [L815] int tmp ; [L816] int tmp___0 ; [L820] CALL, EXPR getWaterLevel() [L533] int retValue_acc ; [L536] retValue_acc = waterLevel [L537] return (retValue_acc); [L820] RET, EXPR getWaterLevel() [L820] tmp = getWaterLevel() [L822] COND TRUE tmp != 2 [L824] CALL, EXPR isPumpRunning() [L723] int retValue_acc ; [L726] retValue_acc = pumpRunning [L727] return (retValue_acc); [L824] RET, EXPR isPumpRunning() [L824] tmp___0 = isPumpRunning() [L826] COND TRUE \read(tmp___0) [L827] COND TRUE ! switchedOnBeforeTS [L829] CALL __automaton_fail() [L84] CALL reach_error() [L3] __assert_fail("0", "minepump_spec5_product34.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 636 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 94.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 52.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2165 SDtfs, 6680 SDslu, 5314 SDs, 0 SdLazy, 9618 SolverSat, 1939 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 492 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 30.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=885occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 1436 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...