/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_spec3_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 19:56:27,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 19:56:27,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 19:56:27,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 19:56:27,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 19:56:27,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 19:56:27,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 19:56:27,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 19:56:27,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 19:56:27,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 19:56:27,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 19:56:27,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 19:56:27,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 19:56:27,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 19:56:27,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 19:56:27,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 19:56:27,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 19:56:27,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 19:56:27,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 19:56:27,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 19:56:27,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 19:56:27,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 19:56:27,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 19:56:27,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 19:56:27,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 19:56:27,715 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 19:56:27,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 19:56:27,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 19:56:27,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 19:56:27,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 19:56:27,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 19:56:27,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 19:56:27,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 19:56:27,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 19:56:27,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 19:56:27,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 19:56:27,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 19:56:27,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 19:56:27,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 19:56:27,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 19:56:27,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 19:56:27,728 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 19:56:27,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 19:56:27,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 19:56:27,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 19:56:27,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 19:56:27,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 19:56:27,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 19:56:27,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 19:56:27,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 19:56:27,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 19:56:27,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 19:56:27,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 19:56:27,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 19:56:27,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 19:56:27,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 19:56:27,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 19:56:27,758 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 19:56:27,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 19:56:27,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 19:56:27,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 19:56:27,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 19:56:27,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 19:56:27,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 19:56:27,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 19:56:28,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 19:56:28,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 19:56:28,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 19:56:28,137 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 19:56:28,138 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 19:56:28,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-10-23 19:56:28,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3785594f1/7ab32659125a41ddb4cf8c62cad5ca4e/FLAG2008c5512 [2020-10-23 19:56:28,870 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 19:56:28,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-10-23 19:56:28,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3785594f1/7ab32659125a41ddb4cf8c62cad5ca4e/FLAG2008c5512 [2020-10-23 19:56:29,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3785594f1/7ab32659125a41ddb4cf8c62cad5ca4e [2020-10-23 19:56:29,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 19:56:29,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 19:56:29,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 19:56:29,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 19:56:29,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 19:56:29,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3759f94b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29, skipping insertion in model container [2020-10-23 19:56:29,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 19:56:29,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 19:56:29,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:56:29,705 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 19:56:29,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 19:56:29,838 INFO L208 MainTranslator]: Completed translation [2020-10-23 19:56:29,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29 WrapperNode [2020-10-23 19:56:29,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 19:56:29,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 19:56:29,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 19:56:29,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 19:56:29,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29" (1/1) ... [2020-10-23 19:56:29,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 19:56:29,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 19:56:29,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 19:56:29,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 19:56:29,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29" (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 19:56:30,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 19:56:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 19:56:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-23 19:56:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 19:56:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-23 19:56:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-23 19:56:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-23 19:56:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-23 19:56:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-23 19:56:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:56:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-23 19:56:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-23 19:56:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-23 19:56:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-23 19:56:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-23 19:56:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-23 19:56:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-23 19:56:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-23 19:56:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-23 19:56:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-23 19:56:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 19:56:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-23 19:56:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-23 19:56:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-23 19:56:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-23 19:56:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-23 19:56:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-23 19:56:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-23 19:56:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-23 19:56:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-23 19:56:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-23 19:56:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-23 19:56:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-23 19:56:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-23 19:56:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-23 19:56:30,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-23 19:56:30,051 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-23 19:56:30,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-23 19:56:30,051 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-23 19:56:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 19:56:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 19:56:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 19:56:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 19:56:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 19:56:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 19:56:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-23 19:56:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-23 19:56:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-23 19:56:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-23 19:56:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-23 19:56:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-23 19:56:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-23 19:56:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-23 19:56:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-23 19:56:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 19:56:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 19:56:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-23 19:56:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 19:56:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 19:56:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 19:56:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 19:56:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-23 19:56:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 19:56:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-23 19:56:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-23 19:56:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 19:56:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-23 19:56:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-23 19:56:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-23 19:56:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-23 19:56:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-23 19:56:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-23 19:56:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-23 19:56:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-23 19:56:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-23 19:56:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-23 19:56:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-23 19:56:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-23 19:56:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 19:56:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-23 19:56:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-23 19:56:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-23 19:56:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-23 19:56:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-23 19:56:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-23 19:56:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-23 19:56:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-23 19:56:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-23 19:56:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-23 19:56:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 19:56:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 19:56:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 19:56:31,317 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 19:56:31,318 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 19:56:31,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:56:31 BoogieIcfgContainer [2020-10-23 19:56:31,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 19:56:31,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 19:56:31,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 19:56:31,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 19:56:31,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:56:29" (1/3) ... [2020-10-23 19:56:31,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e90113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:56:31, skipping insertion in model container [2020-10-23 19:56:31,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:56:29" (2/3) ... [2020-10-23 19:56:31,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e90113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:56:31, skipping insertion in model container [2020-10-23 19:56:31,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:56:31" (3/3) ... [2020-10-23 19:56:31,334 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c [2020-10-23 19:56:31,345 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 19:56:31,351 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-23 19:56:31,364 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-23 19:56:31,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 19:56:31,388 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 19:56:31,388 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 19:56:31,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 19:56:31,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 19:56:31,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 19:56:31,388 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 19:56:31,388 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 19:56:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states. [2020-10-23 19:56:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-23 19:56:31,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:31,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:31,431 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 19:56:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:31,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1398820862, now seen corresponding path program 1 times [2020-10-23 19:56:31,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:31,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086720600] [2020-10-23 19:56:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:31,523 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:32,160 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:32,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:32,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:32,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-23 19:56:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:32,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:56:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:32,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:56:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:32,355 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 19:56:32,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086720600] [2020-10-23 19:56:32,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:32,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 19:56:32,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277651888] [2020-10-23 19:56:32,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 19:56:32,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:32,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 19:56:32,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:56:32,383 INFO L87 Difference]: Start difference. First operand 307 states. Second operand 3 states. [2020-10-23 19:56:33,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:33,900 INFO L93 Difference]: Finished difference Result 459 states and 547 transitions. [2020-10-23 19:56:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 19:56:33,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-10-23 19:56:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:33,918 INFO L225 Difference]: With dead ends: 459 [2020-10-23 19:56:33,918 INFO L226 Difference]: Without dead ends: 288 [2020-10-23 19:56:33,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 19:56:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-23 19:56:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 247. [2020-10-23 19:56:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-23 19:56:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 267 transitions. [2020-10-23 19:56:34,071 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 267 transitions. Word has length 159 [2020-10-23 19:56:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:34,072 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 267 transitions. [2020-10-23 19:56:34,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 19:56:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 267 transitions. [2020-10-23 19:56:34,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-23 19:56:34,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:34,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:34,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 19:56:34,078 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 19:56:34,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:34,079 INFO L82 PathProgramCache]: Analyzing trace with hash -746774492, now seen corresponding path program 1 times [2020-10-23 19:56:34,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:34,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773180468] [2020-10-23 19:56:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:34,083 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:34,570 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:34,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:34,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:34,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:34,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:34,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:34,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-23 19:56:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:34,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:56:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-23 19:56:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:34,674 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 19:56:34,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773180468] [2020-10-23 19:56:34,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:34,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 19:56:34,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827311850] [2020-10-23 19:56:34,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 19:56:34,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:34,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 19:56:34,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 19:56:34,680 INFO L87 Difference]: Start difference. First operand 247 states and 267 transitions. Second operand 4 states. [2020-10-23 19:56:35,524 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:56:36,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:36,598 INFO L93 Difference]: Finished difference Result 367 states and 410 transitions. [2020-10-23 19:56:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 19:56:36,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-23 19:56:36,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:36,607 INFO L225 Difference]: With dead ends: 367 [2020-10-23 19:56:36,608 INFO L226 Difference]: Without dead ends: 271 [2020-10-23 19:56:36,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 19:56:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-23 19:56:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 237. [2020-10-23 19:56:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-23 19:56:36,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 254 transitions. [2020-10-23 19:56:36,759 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 254 transitions. Word has length 160 [2020-10-23 19:56:36,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:36,760 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 254 transitions. [2020-10-23 19:56:36,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 19:56:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 254 transitions. [2020-10-23 19:56:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-23 19:56:36,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:36,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:36,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 19:56:36,766 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 19:56:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:36,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1534357870, now seen corresponding path program 1 times [2020-10-23 19:56:36,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:36,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009210297] [2020-10-23 19:56:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:36,772 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:37,304 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:37,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:37,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:37,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:37,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-23 19:56:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:37,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-23 19:56:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:37,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-23 19:56:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:37,549 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 19:56:37,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009210297] [2020-10-23 19:56:37,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:37,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:56:37,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797932889] [2020-10-23 19:56:37,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:56:37,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:37,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:56:37,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:56:37,554 INFO L87 Difference]: Start difference. First operand 237 states and 254 transitions. Second operand 9 states. [2020-10-23 19:56:38,179 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:38,677 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-23 19:56:39,051 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-23 19:56:39,443 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:39,819 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:40,193 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:41,389 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-23 19:56:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:43,506 INFO L93 Difference]: Finished difference Result 620 states and 710 transitions. [2020-10-23 19:56:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 19:56:43,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 169 [2020-10-23 19:56:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:43,512 INFO L225 Difference]: With dead ends: 620 [2020-10-23 19:56:43,512 INFO L226 Difference]: Without dead ends: 498 [2020-10-23 19:56:43,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-23 19:56:43,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-10-23 19:56:43,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 433. [2020-10-23 19:56:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-10-23 19:56:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 482 transitions. [2020-10-23 19:56:43,779 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 482 transitions. Word has length 169 [2020-10-23 19:56:43,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:43,783 INFO L481 AbstractCegarLoop]: Abstraction has 433 states and 482 transitions. [2020-10-23 19:56:43,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:56:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 482 transitions. [2020-10-23 19:56:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-23 19:56:43,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:43,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:43,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 19:56:43,790 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 19:56:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:43,792 INFO L82 PathProgramCache]: Analyzing trace with hash 864126975, now seen corresponding path program 1 times [2020-10-23 19:56:43,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:43,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268841366] [2020-10-23 19:56:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:43,800 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,227 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:44,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 19:56:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-23 19:56:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-23 19:56:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-23 19:56:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:44,444 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 19:56:44,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268841366] [2020-10-23 19:56:44,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:44,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 19:56:44,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087846175] [2020-10-23 19:56:44,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 19:56:44,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:44,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 19:56:44,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-23 19:56:44,450 INFO L87 Difference]: Start difference. First operand 433 states and 482 transitions. Second operand 9 states. [2020-10-23 19:56:45,092 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:47,180 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:47,579 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:48,042 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:48,467 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:48,832 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-23 19:56:49,221 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:49,603 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-23 19:56:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:50,511 INFO L93 Difference]: Finished difference Result 1235 states and 1526 transitions. [2020-10-23 19:56:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 19:56:50,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2020-10-23 19:56:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:50,526 INFO L225 Difference]: With dead ends: 1235 [2020-10-23 19:56:50,527 INFO L226 Difference]: Without dead ends: 917 [2020-10-23 19:56:50,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-23 19:56:50,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-10-23 19:56:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 729. [2020-10-23 19:56:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-23 19:56:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 835 transitions. [2020-10-23 19:56:50,885 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 835 transitions. Word has length 177 [2020-10-23 19:56:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:50,885 INFO L481 AbstractCegarLoop]: Abstraction has 729 states and 835 transitions. [2020-10-23 19:56:50,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 19:56:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 835 transitions. [2020-10-23 19:56:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-23 19:56:50,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:50,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:50,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 19:56:50,891 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 19:56:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:50,891 INFO L82 PathProgramCache]: Analyzing trace with hash 111738512, now seen corresponding path program 1 times [2020-10-23 19:56:50,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:50,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065559071] [2020-10-23 19:56:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:50,895 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,339 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-23 19:56:51,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 19:56:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-23 19:56:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 19:56:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-23 19:56:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-23 19:56:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-23 19:56:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-23 19:56:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 19:56:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-23 19:56:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-23 19:56:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-23 19:56:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 19:56:51,497 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 19:56:51,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065559071] [2020-10-23 19:56:51,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 19:56:51,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 19:56:51,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269633307] [2020-10-23 19:56:51,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 19:56:51,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 19:56:51,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 19:56:51,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 19:56:51,500 INFO L87 Difference]: Start difference. First operand 729 states and 835 transitions. Second operand 6 states. [2020-10-23 19:56:52,101 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-23 19:56:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 19:56:52,994 INFO L93 Difference]: Finished difference Result 1192 states and 1407 transitions. [2020-10-23 19:56:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 19:56:52,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2020-10-23 19:56:52,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 19:56:52,999 INFO L225 Difference]: With dead ends: 1192 [2020-10-23 19:56:52,999 INFO L226 Difference]: Without dead ends: 578 [2020-10-23 19:56:53,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-23 19:56:53,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-23 19:56:53,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 548. [2020-10-23 19:56:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-10-23 19:56:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 599 transitions. [2020-10-23 19:56:53,284 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 599 transitions. Word has length 182 [2020-10-23 19:56:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 19:56:53,285 INFO L481 AbstractCegarLoop]: Abstraction has 548 states and 599 transitions. [2020-10-23 19:56:53,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 19:56:53,285 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 599 transitions. [2020-10-23 19:56:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-23 19:56:53,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 19:56:53,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:53,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 19:56:53,289 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 19:56:53,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 19:56:53,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1502767290, now seen corresponding path program 1 times [2020-10-23 19:56:53,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 19:56:53,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11513217] [2020-10-23 19:56:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 19:56:53,293 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 19:56:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:53,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 19:56:53,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 19:56:53,632 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 19:56:53,633 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 19:56:53,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 19:56:53,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:56:53 BoogieIcfgContainer [2020-10-23 19:56:53,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 19:56:53,674 INFO L168 Benchmark]: Toolchain (without parser) took 24522.63 ms. Allocated memory was 157.3 MB in the beginning and 518.0 MB in the end (delta: 360.7 MB). Free memory was 131.7 MB in the beginning and 408.5 MB in the end (delta: -276.7 MB). Peak memory consumption was 85.4 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:53,675 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 19:56:53,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.63 ms. Allocated memory is still 157.3 MB. Free memory was 131.0 MB in the beginning and 110.5 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:53,683 INFO L168 Benchmark]: Boogie Preprocessor took 100.38 ms. Allocated memory is still 157.3 MB. Free memory was 110.5 MB in the beginning and 106.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:53,684 INFO L168 Benchmark]: RCFGBuilder took 1379.12 ms. Allocated memory was 157.3 MB in the beginning and 192.9 MB in the end (delta: 35.7 MB). Free memory was 106.6 MB in the beginning and 127.1 MB in the end (delta: -20.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:53,684 INFO L168 Benchmark]: TraceAbstraction took 22345.33 ms. Allocated memory was 192.9 MB in the beginning and 518.0 MB in the end (delta: 325.1 MB). Free memory was 127.1 MB in the beginning and 408.5 MB in the end (delta: -281.3 MB). Peak memory consumption was 43.7 MB. Max. memory is 8.0 GB. [2020-10-23 19:56:53,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 677.63 ms. Allocated memory is still 157.3 MB. Free memory was 131.0 MB in the beginning and 110.5 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 100.38 ms. Allocated memory is still 157.3 MB. Free memory was 110.5 MB in the beginning and 106.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1379.12 ms. Allocated memory was 157.3 MB in the beginning and 192.9 MB in the end (delta: 35.7 MB). Free memory was 106.6 MB in the beginning and 127.1 MB in the end (delta: -20.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22345.33 ms. Allocated memory was 192.9 MB in the beginning and 518.0 MB in the end (delta: 325.1 MB). Free memory was 127.1 MB in the beginning and 408.5 MB in the end (delta: -281.3 MB). Peak memory consumption was 43.7 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: [L295] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int cleanupTimeShifts = 4; [L596] int waterLevel = 1; [L597] int methaneLevelCritical = 0; [L755] int pumpRunning = 0; [L756] int systemActive = 1; [L570] int retValue_acc ; [L571] int tmp ; [L575] FCALL select_helpers() [L576] FCALL select_features() [L577] CALL, EXPR valid_product() [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L577] RET, EXPR valid_product() [L577] tmp = valid_product() [L579] COND TRUE \read(tmp) [L581] FCALL setup() [L582] CALL runTest() [L564] CALL test() [L687] int splverifierCounter ; [L688] int tmp ; [L689] int tmp___0 ; [L690] int tmp___1 ; [L691] int tmp___2 ; [L694] splverifierCounter = 0 [L696] COND TRUE 1 [L698] COND TRUE splverifierCounter < 4 [L704] tmp = __VERIFIER_nondet_int() [L706] COND TRUE \read(tmp) [L708] CALL waterRise() [L614] COND TRUE waterLevel < 2 [L615] waterLevel = waterLevel + 1 [L708] RET waterRise() [L714] tmp___0 = __VERIFIER_nondet_int() [L716] COND FALSE !(\read(tmp___0)) [L724] tmp___2 = __VERIFIER_nondet_int() [L726] COND TRUE \read(tmp___2) [L741] CALL timeShift() [L762] COND FALSE !(\read(pumpRunning)) [L769] COND TRUE \read(systemActive) [L771] CALL processEnvironment() [L791] int tmp ; [L794] COND FALSE !(\read(pumpRunning)) [L809] FCALL processEnvironment__wrappee__base() [L771] RET processEnvironment() [L777] CALL __utac_acc__Specification3_spec__1() [L93] int tmp ; [L94] int tmp___0 ; [L95] int tmp___1 ; [L99] CALL, EXPR isMethaneLevelCritical() [L635] int retValue_acc ; [L638] retValue_acc = methaneLevelCritical [L639] return (retValue_acc); [L99] RET, EXPR isMethaneLevelCritical() [L99] tmp = isMethaneLevelCritical() [L101] COND FALSE !(\read(tmp)) [L105] CALL, EXPR getWaterLevel() [L667] int retValue_acc ; [L670] retValue_acc = waterLevel [L671] return (retValue_acc); [L105] RET, EXPR getWaterLevel() [L105] tmp___0 = getWaterLevel() [L107] COND TRUE tmp___0 == 2 [L109] CALL, EXPR isPumpRunning() [L843] int retValue_acc ; [L846] retValue_acc = pumpRunning [L847] return (retValue_acc); [L109] RET, EXPR isPumpRunning() [L109] tmp___1 = isPumpRunning() [L111] COND FALSE !(\read(tmp___1)) [L115] CALL __automaton_fail() [L46] CALL reach_error() [L3] __assert_fail("0", "minepump_spec3_product19.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 628 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1100 SDtfs, 1814 SDslu, 1382 SDs, 0 SdLazy, 2878 SolverSat, 580 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=729occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 358 StatesRemovedByMinimization, 5 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...