./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_productSimulator.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a14cd82fb4a7a8631dbac962b884aa1ac25841cd2c28c7e6e05438cc00132d3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 20:25:28,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 20:25:28,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 20:25:28,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 20:25:28,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 20:25:28,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 20:25:28,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 20:25:28,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 20:25:28,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 20:25:28,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 20:25:28,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 20:25:28,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 20:25:28,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 20:25:28,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 20:25:28,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 20:25:28,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 20:25:28,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 20:25:28,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 20:25:28,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 20:25:28,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 20:25:28,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 20:25:28,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 20:25:28,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 20:25:28,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 20:25:28,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 20:25:28,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 20:25:28,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 20:25:28,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 20:25:28,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 20:25:28,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 20:25:28,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 20:25:28,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 20:25:28,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 20:25:28,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 20:25:28,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 20:25:28,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 20:25:28,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 20:25:28,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 20:25:28,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 20:25:28,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 20:25:28,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 20:25:28,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-22 20:25:28,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 20:25:28,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 20:25:28,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 20:25:28,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 20:25:28,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 20:25:28,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 20:25:28,883 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 20:25:28,883 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 20:25:28,883 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 20:25:28,884 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 20:25:28,884 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 20:25:28,885 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 20:25:28,885 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 20:25:28,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 20:25:28,885 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 20:25:28,885 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 20:25:28,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 20:25:28,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 20:25:28,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 20:25:28,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 20:25:28,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 20:25:28,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 20:25:28,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 20:25:28,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 20:25:28,887 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 20:25:28,887 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 20:25:28,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 20:25:28,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 20:25:28,888 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 20:25:28,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 20:25:28,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 20:25:28,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 20:25:28,889 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 20:25:28,889 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a14cd82fb4a7a8631dbac962b884aa1ac25841cd2c28c7e6e05438cc00132d3 [2021-12-22 20:25:29,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 20:25:29,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 20:25:29,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 20:25:29,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 20:25:29,163 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 20:25:29,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_productSimulator.cil.c [2021-12-22 20:25:29,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9822a2dd5/5485055a1c4b479aa599a822b00275ea/FLAG1260f9b76 [2021-12-22 20:25:29,746 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 20:25:29,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_productSimulator.cil.c [2021-12-22 20:25:29,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9822a2dd5/5485055a1c4b479aa599a822b00275ea/FLAG1260f9b76 [2021-12-22 20:25:30,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9822a2dd5/5485055a1c4b479aa599a822b00275ea [2021-12-22 20:25:30,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 20:25:30,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 20:25:30,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 20:25:30,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 20:25:30,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 20:25:30,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da48a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30, skipping insertion in model container [2021-12-22 20:25:30,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 20:25:30,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 20:25:30,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_productSimulator.cil.c[20029,20042] [2021-12-22 20:25:30,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 20:25:30,604 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 20:25:30,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_productSimulator.cil.c[20029,20042] [2021-12-22 20:25:30,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 20:25:30,733 INFO L208 MainTranslator]: Completed translation [2021-12-22 20:25:30,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30 WrapperNode [2021-12-22 20:25:30,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 20:25:30,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 20:25:30,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 20:25:30,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 20:25:30,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,866 INFO L137 Inliner]: procedures = 63, calls = 178, calls flagged for inlining = 75, calls inlined = 452, statements flattened = 2766 [2021-12-22 20:25:30,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 20:25:30,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 20:25:30,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 20:25:30,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 20:25:30,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 20:25:30,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 20:25:30,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 20:25:30,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 20:25:30,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (1/1) ... [2021-12-22 20:25:30,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 20:25:30,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 20:25:31,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 20:25:31,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-22 20:25:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 20:25:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 20:25:31,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 20:25:31,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 20:25:31,176 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 20:25:31,177 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 20:25:32,188 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 20:25:32,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 20:25:32,198 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 20:25:32,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:25:32 BoogieIcfgContainer [2021-12-22 20:25:32,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 20:25:32,202 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 20:25:32,202 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 20:25:32,204 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 20:25:32,205 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:25:32,205 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 08:25:30" (1/3) ... [2021-12-22 20:25:32,206 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64a95322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 08:25:32, skipping insertion in model container [2021-12-22 20:25:32,206 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:25:32,206 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:25:30" (2/3) ... [2021-12-22 20:25:32,206 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64a95322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 08:25:32, skipping insertion in model container [2021-12-22 20:25:32,206 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 20:25:32,207 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:25:32" (3/3) ... [2021-12-22 20:25:32,208 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_productSimulator.cil.c [2021-12-22 20:25:32,247 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 20:25:32,247 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 20:25:32,247 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 20:25:32,248 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 20:25:32,248 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 20:25:32,248 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 20:25:32,248 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 20:25:32,249 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 20:25:32,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 772 states, 771 states have (on average 1.3476005188067446) internal successors, (1039), 771 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:25:32,337 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 509 [2021-12-22 20:25:32,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:32,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:32,346 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:32,346 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:32,346 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 20:25:32,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 772 states, 771 states have (on average 1.3476005188067446) internal successors, (1039), 771 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:25:32,373 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 509 [2021-12-22 20:25:32,374 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:32,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:32,376 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:32,377 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:32,381 INFO L791 eck$LassoCheckResult]: Stem: 387#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(38, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~__SELECTED_FEATURE_base~0 := 0;~__SELECTED_FEATURE_highWaterSensor~0 := 0;~__SELECTED_FEATURE_lowWaterSensor~0 := 0;~__SELECTED_FEATURE_methaneQuery~0 := 0;~__SELECTED_FEATURE_methaneAlarm~0 := 0;~__SELECTED_FEATURE_stopCommand~0 := 0;~__SELECTED_FEATURE_startCommand~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 700#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true;~__GUIDSL_ROOT_PRODUCTION~0 := 1; 473#L979true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true;havoc select_features_#t~ret48#1, select_features_#t~ret49#1, select_features_#t~ret50#1, select_features_#t~ret51#1, select_features_#t~ret52#1, select_features_#t~ret53#1;~__SELECTED_FEATURE_base~0 := 1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 771#L954true select_features_#t~ret48#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_highWaterSensor~0 := select_features_#t~ret48#1;havoc select_features_#t~ret48#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 235#L954-1true select_features_#t~ret49#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_lowWaterSensor~0 := select_features_#t~ret49#1;havoc select_features_#t~ret49#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 366#L954-2true select_features_#t~ret50#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_methaneQuery~0 := select_features_#t~ret50#1;havoc select_features_#t~ret50#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 477#L954-3true select_features_#t~ret51#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_methaneAlarm~0 := select_features_#t~ret51#1;havoc select_features_#t~ret51#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 177#L954-4true select_features_#t~ret52#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_stopCommand~0 := select_features_#t~ret52#1;havoc select_features_#t~ret52#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 448#L954-5true select_features_#t~ret53#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_startCommand~0 := select_features_#t~ret53#1;havoc select_features_#t~ret53#1; 521#L971true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := ~__SELECTED_FEATURE_base~0;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 636#L987true main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 278#L506true assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 348#L479true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_#t~nondet31#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 332#L540-2true [2021-12-22 20:25:32,382 INFO L793 eck$LassoCheckResult]: Loop: 332#L540-2true assume !false; 629#L541true assume test_~splverifierCounter~0#1 < 4; 303#L542true test_~tmp~4#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 668#L550true assume !(0 != test_~tmp~4#1); 112#L550-2true test_~tmp___0~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 581#L560true assume !(0 != test_~tmp___0~0#1); 640#L560-2true test_~tmp___2~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 221#L570true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 395#L582true assume !(0 != test_~tmp___1~0#1); 589#L582-1true assume { :begin_inline_timeShift } true; 568#L623true assume !(0 != ~pumpRunning~0); 20#L623-2true assume !(0 != ~systemActive~0); 611#L630-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret54#1, __utac_acc__Specification3_spec__1_#t~ret55#1, __utac_acc__Specification3_spec__1_#t~ret56#1, __utac_acc__Specification3_spec__1_~tmp~11#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~11#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 528#L1080-10true __utac_acc__Specification3_spec__1_#t~ret54#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~11#1 := __utac_acc__Specification3_spec__1_#t~ret54#1;havoc __utac_acc__Specification3_spec__1_#t~ret54#1; 340#L1003true assume 0 != __utac_acc__Specification3_spec__1_~tmp~11#1; 25#L1009-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 587#L640true assume { :end_inline_timeShift } true; 332#L540-2true [2021-12-22 20:25:32,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1125405515, now seen corresponding path program 1 times [2021-12-22 20:25:32,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:32,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184421738] [2021-12-22 20:25:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:32,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:32,521 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:32,579 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1278779245, now seen corresponding path program 1 times [2021-12-22 20:25:32,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:32,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278608819] [2021-12-22 20:25:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:32,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:32,589 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:32,599 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:32,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:32,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1716598135, now seen corresponding path program 1 times [2021-12-22 20:25:32,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:32,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006576285] [2021-12-22 20:25:32,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:32,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:25:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:25:32,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:25:32,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006576285] [2021-12-22 20:25:32,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006576285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 20:25:32,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 20:25:32,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 20:25:32,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870035904] [2021-12-22 20:25:32,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 20:25:32,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:25:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 20:25:32,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 20:25:32,870 INFO L87 Difference]: Start difference. First operand has 772 states, 771 states have (on average 1.3476005188067446) internal successors, (1039), 771 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:25:33,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:25:33,130 INFO L93 Difference]: Finished difference Result 2351 states and 3144 transitions. [2021-12-22 20:25:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 20:25:33,136 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2351 states and 3144 transitions. [2021-12-22 20:25:33,159 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 1558 [2021-12-22 20:25:33,180 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2351 states to 2311 states and 3104 transitions. [2021-12-22 20:25:33,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2311 [2021-12-22 20:25:33,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2311 [2021-12-22 20:25:33,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2311 states and 3104 transitions. [2021-12-22 20:25:33,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:25:33,191 INFO L681 BuchiCegarLoop]: Abstraction has 2311 states and 3104 transitions. [2021-12-22 20:25:33,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states and 3104 transitions. [2021-12-22 20:25:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 819. [2021-12-22 20:25:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 819 states have (on average 1.3418803418803418) internal successors, (1099), 818 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:25:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1099 transitions. [2021-12-22 20:25:33,254 INFO L704 BuchiCegarLoop]: Abstraction has 819 states and 1099 transitions. [2021-12-22 20:25:33,255 INFO L587 BuchiCegarLoop]: Abstraction has 819 states and 1099 transitions. [2021-12-22 20:25:33,255 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 20:25:33,255 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 819 states and 1099 transitions. [2021-12-22 20:25:33,272 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 551 [2021-12-22 20:25:33,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:33,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:33,274 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:33,274 INFO L843 BuchiCegarLoop]: Counterexample loop 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] [2021-12-22 20:25:33,274 INFO L791 eck$LassoCheckResult]: Stem: 3903#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(38, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~__SELECTED_FEATURE_base~0 := 0;~__SELECTED_FEATURE_highWaterSensor~0 := 0;~__SELECTED_FEATURE_lowWaterSensor~0 := 0;~__SELECTED_FEATURE_methaneQuery~0 := 0;~__SELECTED_FEATURE_methaneAlarm~0 := 0;~__SELECTED_FEATURE_stopCommand~0 := 0;~__SELECTED_FEATURE_startCommand~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 3875#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true;~__GUIDSL_ROOT_PRODUCTION~0 := 1; 3461#L979 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true;havoc select_features_#t~ret48#1, select_features_#t~ret49#1, select_features_#t~ret50#1, select_features_#t~ret51#1, select_features_#t~ret52#1, select_features_#t~ret53#1;~__SELECTED_FEATURE_base~0 := 1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 3462#L954 select_features_#t~ret48#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_highWaterSensor~0 := select_features_#t~ret48#1;havoc select_features_#t~ret48#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 3778#L954-1 select_features_#t~ret49#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_lowWaterSensor~0 := select_features_#t~ret49#1;havoc select_features_#t~ret49#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 3779#L954-2 select_features_#t~ret50#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_methaneQuery~0 := select_features_#t~ret50#1;havoc select_features_#t~ret50#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 3477#L954-3 select_features_#t~ret51#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_methaneAlarm~0 := select_features_#t~ret51#1;havoc select_features_#t~ret51#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 3478#L954-4 select_features_#t~ret52#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_stopCommand~0 := select_features_#t~ret52#1;havoc select_features_#t~ret52#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 3359#L954-5 select_features_#t~ret53#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_startCommand~0 := select_features_#t~ret53#1;havoc select_features_#t~ret53#1; 3360#L971 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := ~__SELECTED_FEATURE_base~0;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 3599#L987 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 3816#L506 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 3834#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_#t~nondet31#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3743#L540-2 [2021-12-22 20:25:33,274 INFO L793 eck$LassoCheckResult]: Loop: 3743#L540-2 assume !false; 3800#L541 assume test_~splverifierCounter~0#1 < 4; 3801#L542 test_~tmp~4#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 3853#L550 assume !(0 != test_~tmp~4#1); 3149#L550-2 test_~tmp___0~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 3525#L560 assume !(0 != test_~tmp___0~0#1); 3312#L560-2 test_~tmp___2~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 3750#L570 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 3751#L582 assume !(0 != test_~tmp___1~0#1); 3403#L582-1 assume { :begin_inline_timeShift } true; 3701#L623 assume !(0 != ~pumpRunning~0); 3223#L623-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true; 3224#L766 assume !(0 != ~__SELECTED_FEATURE_methaneAlarm~0);assume { :begin_inline_processEnvironment__before__methaneAlarm } true; 3703#L723-2 assume !(0 != ~__SELECTED_FEATURE_lowWaterSensor~0);assume { :begin_inline_processEnvironment__before__lowWaterSensor } true; 3216#L680-8 assume !(0 != ~__SELECTED_FEATURE_highWaterSensor~0);assume { :begin_inline_processEnvironment__before__highWaterSensor } true; 3192#L647-26 assume { :end_inline_processEnvironment__before__highWaterSensor } true; 3193#L689-8 assume { :end_inline_processEnvironment__before__lowWaterSensor } true; 3622#L732-2 assume { :end_inline_processEnvironment__before__methaneAlarm } true; 3663#L775 assume { :end_inline_processEnvironment } true; 3772#L630-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret54#1, __utac_acc__Specification3_spec__1_#t~ret55#1, __utac_acc__Specification3_spec__1_#t~ret56#1, __utac_acc__Specification3_spec__1_~tmp~11#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~11#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 3617#L1080-10 __utac_acc__Specification3_spec__1_#t~ret54#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~11#1 := __utac_acc__Specification3_spec__1_#t~ret54#1;havoc __utac_acc__Specification3_spec__1_#t~ret54#1; 3618#L1003 assume 0 != __utac_acc__Specification3_spec__1_~tmp~11#1; 3243#L1009-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 3244#L640 assume { :end_inline_timeShift } true; 3743#L540-2 [2021-12-22 20:25:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1125405515, now seen corresponding path program 2 times [2021-12-22 20:25:33,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:33,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321039452] [2021-12-22 20:25:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:33,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:33,305 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:33,324 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:33,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:33,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1304844163, now seen corresponding path program 1 times [2021-12-22 20:25:33,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:33,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824965555] [2021-12-22 20:25:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:33,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:33,331 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:33,336 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:33,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1942482125, now seen corresponding path program 1 times [2021-12-22 20:25:33,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:33,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196390463] [2021-12-22 20:25:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:33,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 20:25:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 20:25:33,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 20:25:33,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196390463] [2021-12-22 20:25:33,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196390463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 20:25:33,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 20:25:33,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 20:25:33,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476477678] [2021-12-22 20:25:33,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 20:25:33,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 20:25:33,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 20:25:33,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 20:25:33,522 INFO L87 Difference]: Start difference. First operand 819 states and 1099 transitions. cyclomatic complexity: 283 Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:25:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 20:25:33,932 INFO L93 Difference]: Finished difference Result 3239 states and 4355 transitions. [2021-12-22 20:25:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 20:25:33,933 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3239 states and 4355 transitions. [2021-12-22 20:25:33,957 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 2206 [2021-12-22 20:25:33,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3239 states to 3239 states and 4355 transitions. [2021-12-22 20:25:33,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3239 [2021-12-22 20:25:33,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3239 [2021-12-22 20:25:33,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3239 states and 4355 transitions. [2021-12-22 20:25:33,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-22 20:25:33,981 INFO L681 BuchiCegarLoop]: Abstraction has 3239 states and 4355 transitions. [2021-12-22 20:25:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states and 4355 transitions. [2021-12-22 20:25:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 1625. [2021-12-22 20:25:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1625 states have (on average 1.3396923076923077) internal successors, (2177), 1624 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 20:25:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2177 transitions. [2021-12-22 20:25:34,025 INFO L704 BuchiCegarLoop]: Abstraction has 1625 states and 2177 transitions. [2021-12-22 20:25:34,026 INFO L587 BuchiCegarLoop]: Abstraction has 1625 states and 2177 transitions. [2021-12-22 20:25:34,026 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-22 20:25:34,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1625 states and 2177 transitions. [2021-12-22 20:25:34,033 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 1102 [2021-12-22 20:25:34,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 20:25:34,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 20:25:34,036 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 20:25:34,036 INFO L843 BuchiCegarLoop]: Counterexample loop 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] [2021-12-22 20:25:34,036 INFO L791 eck$LassoCheckResult]: Stem: 8088#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(38, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~__SELECTED_FEATURE_base~0 := 0;~__SELECTED_FEATURE_highWaterSensor~0 := 0;~__SELECTED_FEATURE_lowWaterSensor~0 := 0;~__SELECTED_FEATURE_methaneQuery~0 := 0;~__SELECTED_FEATURE_methaneAlarm~0 := 0;~__SELECTED_FEATURE_stopCommand~0 := 0;~__SELECTED_FEATURE_startCommand~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 8034#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret27#1, main_~retValue_acc~3#1, main_~tmp~3#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~3#1;assume { :begin_inline_select_helpers } true;~__GUIDSL_ROOT_PRODUCTION~0 := 1; 7545#L979 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true;havoc select_features_#t~ret48#1, select_features_#t~ret49#1, select_features_#t~ret50#1, select_features_#t~ret51#1, select_features_#t~ret52#1, select_features_#t~ret53#1;~__SELECTED_FEATURE_base~0 := 1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 7546#L954 select_features_#t~ret48#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_highWaterSensor~0 := select_features_#t~ret48#1;havoc select_features_#t~ret48#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 7901#L954-1 select_features_#t~ret49#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_lowWaterSensor~0 := select_features_#t~ret49#1;havoc select_features_#t~ret49#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 7902#L954-2 select_features_#t~ret50#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_methaneQuery~0 := select_features_#t~ret50#1;havoc select_features_#t~ret50#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 7562#L954-3 select_features_#t~ret51#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_methaneAlarm~0 := select_features_#t~ret51#1;havoc select_features_#t~ret51#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 7563#L954-4 select_features_#t~ret52#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_stopCommand~0 := select_features_#t~ret52#1;havoc select_features_#t~ret52#1;assume { :begin_inline_select_one } true;havoc select_one_#res#1;havoc select_one_#t~nondet47#1, select_one_~retValue_acc~8#1, select_one_~choice~0#1;havoc select_one_~retValue_acc~8#1;select_one_~choice~0#1 := select_one_#t~nondet47#1;havoc select_one_#t~nondet47#1;select_one_~retValue_acc~8#1 := select_one_~choice~0#1;select_one_#res#1 := select_one_~retValue_acc~8#1; 7439#L954-5 select_features_#t~ret53#1 := select_one_#res#1;assume { :end_inline_select_one } true;~__SELECTED_FEATURE_startCommand~0 := select_features_#t~ret53#1;havoc select_features_#t~ret53#1; 7440#L971 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~9#1;havoc valid_product_~retValue_acc~9#1;valid_product_~retValue_acc~9#1 := ~__SELECTED_FEATURE_base~0;valid_product_#res#1 := valid_product_~retValue_acc~9#1; 7698#L987 main_#t~ret27#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~3#1 := main_#t~ret27#1;havoc main_#t~ret27#1; 7950#L506 assume 0 != main_~tmp~3#1;assume { :begin_inline_setup } true; 7974#L479 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet28#1, test_#t~nondet29#1, test_#t~nondet30#1, test_#t~nondet31#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 8063#L540-2 [2021-12-22 20:25:34,038 INFO L793 eck$LassoCheckResult]: Loop: 8063#L540-2 assume !false; 8294#L541 assume test_~splverifierCounter~0#1 < 4; 7999#L542 test_~tmp~4#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 7996#L550 assume !(0 != test_~tmp~4#1); 7225#L550-2 test_~tmp___0~0#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 7615#L560 assume !(0 != test_~tmp___0~0#1); 7391#L560-2 test_~tmp___2~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 7870#L570 assume 0 != test_~tmp___2~0#1; 7872#L571 assume !(0 != ~__SELECTED_FEATURE_startCommand~0); 7483#L582-1 assume { :begin_inline_timeShift } true; 7818#L623 assume !(0 != ~pumpRunning~0); 7299#L623-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true; 7300#L766 assume !(0 != ~__SELECTED_FEATURE_methaneAlarm~0);assume { :begin_inline_processEnvironment__before__methaneAlarm } true; 7820#L723-2 assume !(0 != ~__SELECTED_FEATURE_lowWaterSensor~0);assume { :begin_inline_processEnvironment__before__lowWaterSensor } true; 7292#L680-8 assume !(0 != ~__SELECTED_FEATURE_highWaterSensor~0);assume { :begin_inline_processEnvironment__before__highWaterSensor } true; 7268#L647-26 assume { :end_inline_processEnvironment__before__highWaterSensor } true; 7269#L689-8 assume { :end_inline_processEnvironment__before__lowWaterSensor } true; 7724#L732-2 assume { :end_inline_processEnvironment__before__methaneAlarm } true; 7773#L775 assume { :end_inline_processEnvironment } true; 7894#L630-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret54#1, __utac_acc__Specification3_spec__1_#t~ret55#1, __utac_acc__Specification3_spec__1_#t~ret56#1, __utac_acc__Specification3_spec__1_~tmp~11#1, __utac_acc__Specification3_spec__1_~tmp___0~3#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~11#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 7895#L1080-10 __utac_acc__Specification3_spec__1_#t~ret54#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~11#1 := __utac_acc__Specification3_spec__1_#t~ret54#1;havoc __utac_acc__Specification3_spec__1_#t~ret54#1; 8049#L1003 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~11#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~11#1;havoc getWaterLevel_~retValue_acc~11#1;getWaterLevel_~retValue_acc~11#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~11#1; 8050#L1112 __utac_acc__Specification3_spec__1_#t~ret55#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~3#1 := __utac_acc__Specification3_spec__1_#t~ret55#1;havoc __utac_acc__Specification3_spec__1_#t~ret55#1; 8300#L1009 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~3#1); 8299#L1009-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 8295#L640 assume { :end_inline_timeShift } true; 8063#L540-2 [2021-12-22 20:25:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:34,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1125405515, now seen corresponding path program 3 times [2021-12-22 20:25:34,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:34,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410027522] [2021-12-22 20:25:34,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:34,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:34,062 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:34,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:34,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1162145979, now seen corresponding path program 1 times [2021-12-22 20:25:34,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:34,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19535916] [2021-12-22 20:25:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:34,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:34,085 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:34,090 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:34,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 20:25:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1722579471, now seen corresponding path program 1 times [2021-12-22 20:25:34,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 20:25:34,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380155790] [2021-12-22 20:25:34,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 20:25:34,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 20:25:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:34,102 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 20:25:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 20:25:34,118 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 20:25:37,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.12 08:25:37 BoogieIcfgContainer [2021-12-22 20:25:37,674 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-22 20:25:37,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 20:25:37,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 20:25:37,675 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 20:25:37,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:25:32" (3/4) ... [2021-12-22 20:25:37,677 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-22 20:25:37,767 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 20:25:37,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 20:25:37,768 INFO L158 Benchmark]: Toolchain (without parser) took 7534.61ms. Allocated memory was 94.4MB in the beginning and 209.7MB in the end (delta: 115.3MB). Free memory was 64.1MB in the beginning and 164.5MB in the end (delta: -100.4MB). Peak memory consumption was 96.9MB. Max. memory is 16.1GB. [2021-12-22 20:25:37,769 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 47.1MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 20:25:37,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.17ms. Allocated memory is still 94.4MB. Free memory was 63.9MB in the beginning and 69.9MB in the end (delta: -5.9MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2021-12-22 20:25:37,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 134.72ms. Allocated memory is still 94.4MB. Free memory was 69.9MB in the beginning and 60.6MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 20:25:37,770 INFO L158 Benchmark]: Boogie Preprocessor took 99.15ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 53.9MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 20:25:37,770 INFO L158 Benchmark]: RCFGBuilder took 1225.81ms. Allocated memory is still 94.4MB. Free memory was 53.6MB in the beginning and 37.1MB in the end (delta: 16.5MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2021-12-22 20:25:37,770 INFO L158 Benchmark]: BuchiAutomizer took 5472.38ms. Allocated memory was 94.4MB in the beginning and 169.9MB in the end (delta: 75.5MB). Free memory was 37.1MB in the beginning and 44.1MB in the end (delta: -7.0MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. [2021-12-22 20:25:37,771 INFO L158 Benchmark]: Witness Printer took 93.29ms. Allocated memory was 169.9MB in the beginning and 209.7MB in the end (delta: 39.8MB). Free memory was 44.1MB in the beginning and 164.5MB in the end (delta: -120.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 20:25:37,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory was 47.2MB in the beginning and 47.1MB in the end (delta: 45.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 499.17ms. Allocated memory is still 94.4MB. Free memory was 63.9MB in the beginning and 69.9MB in the end (delta: -5.9MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 134.72ms. Allocated memory is still 94.4MB. Free memory was 69.9MB in the beginning and 60.6MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.15ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 53.9MB in the end (delta: 6.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1225.81ms. Allocated memory is still 94.4MB. Free memory was 53.6MB in the beginning and 37.1MB in the end (delta: 16.5MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 5472.38ms. Allocated memory was 94.4MB in the beginning and 169.9MB in the end (delta: 75.5MB). Free memory was 37.1MB in the beginning and 44.1MB in the end (delta: -7.0MB). Peak memory consumption was 73.3MB. Max. memory is 16.1GB. * Witness Printer took 93.29ms. Allocated memory was 169.9MB in the beginning and 209.7MB in the end (delta: 39.8MB). Free memory was 44.1MB in the beginning and 164.5MB in the end (delta: -120.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 1625 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 4.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 3106 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 1625 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11332 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11332 mSDsluCounter, 15012 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12367 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 433 IncrementalHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 2645 mSDtfsCounter, 433 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 540]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42b59901=29, NULL=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a5be096=0, __SELECTED_FEATURE_base=1, NULL=1, methaneLevelCritical=0, retValue_acc=1, __GUIDSL_ROOT_PRODUCTION=1, tmp___0=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67e180cb=0, tmp___2=29, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57a55067=0, tmp=1, cleanupTimeShifts=4, choice=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22e7b887=0, \result=1, tmp___1=0, NULL=0, waterLevel=1, systemActive=1, __SELECTED_FEATURE_methaneAlarm=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3df53186=0, __SELECTED_FEATURE_lowWaterSensor=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e7f00b9=0, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23362059=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@338c5f2b=0, __SELECTED_FEATURE_highWaterSensor=0, retValue_acc=0, retValue_acc=1, \result=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@198bf853=0, \result=1, __SELECTED_FEATURE_methaneQuery=0, __SELECTED_FEATURE_stopCommand=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42f783c5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@614539e3=0, retValue_acc=0, \result=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14a9a9d0=0, __SELECTED_FEATURE_startCommand=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b29e105=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@683394eb=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 540]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int cleanupTimeShifts = 4; [L520] int __SELECTED_FEATURE_base ; [L521] int __SELECTED_FEATURE_highWaterSensor ; [L522] int __SELECTED_FEATURE_lowWaterSensor ; [L523] int __SELECTED_FEATURE_methaneQuery ; [L524] int __SELECTED_FEATURE_methaneAlarm ; [L525] int __SELECTED_FEATURE_stopCommand ; [L526] int __SELECTED_FEATURE_startCommand ; [L527] int __GUIDSL_ROOT_PRODUCTION ; [L615] int pumpRunning = 0; [L616] int systemActive = 1; [L1037] int waterLevel = 1; [L1038] int methaneLevelCritical = 0; [L497] int retValue_acc ; [L498] int tmp ; [L502] CALL select_helpers() [L978] __GUIDSL_ROOT_PRODUCTION = 1 [L502] RET select_helpers() [L503] CALL select_features() [L963] __SELECTED_FEATURE_base = 1 [L964] CALL, EXPR select_one() [L949] int retValue_acc ; [L950] int choice = __VERIFIER_nondet_int(); [L953] retValue_acc = choice [L954] return (retValue_acc); [L964] RET, EXPR select_one() [L964] __SELECTED_FEATURE_highWaterSensor = select_one() [L965] CALL, EXPR select_one() [L949] int retValue_acc ; [L950] int choice = __VERIFIER_nondet_int(); [L953] retValue_acc = choice [L954] return (retValue_acc); [L965] RET, EXPR select_one() [L965] __SELECTED_FEATURE_lowWaterSensor = select_one() [L966] CALL, EXPR select_one() [L949] int retValue_acc ; [L950] int choice = __VERIFIER_nondet_int(); [L953] retValue_acc = choice [L954] return (retValue_acc); [L966] RET, EXPR select_one() [L966] __SELECTED_FEATURE_methaneQuery = select_one() [L967] CALL, EXPR select_one() [L949] int retValue_acc ; [L950] int choice = __VERIFIER_nondet_int(); [L953] retValue_acc = choice [L954] return (retValue_acc); [L967] RET, EXPR select_one() [L967] __SELECTED_FEATURE_methaneAlarm = select_one() [L968] CALL, EXPR select_one() [L949] int retValue_acc ; [L950] int choice = __VERIFIER_nondet_int(); [L953] retValue_acc = choice [L954] return (retValue_acc); [L968] RET, EXPR select_one() [L968] __SELECTED_FEATURE_stopCommand = select_one() [L969] CALL, EXPR select_one() [L949] int retValue_acc ; [L950] int choice = __VERIFIER_nondet_int(); [L953] retValue_acc = choice [L954] return (retValue_acc); [L969] RET, EXPR select_one() [L969] __SELECTED_FEATURE_startCommand = select_one() [L503] RET select_features() [L504] CALL, EXPR valid_product() [L983] int retValue_acc ; [L986] retValue_acc = __SELECTED_FEATURE_base [L987] return (retValue_acc); [L504] RET, EXPR valid_product() [L504] tmp = valid_product() [L506] COND TRUE \read(tmp) [L508] FCALL setup() [L509] CALL runTest() [L488] CALL test() [L531] int splverifierCounter ; [L532] int tmp ; [L533] int tmp___0 ; [L534] int tmp___1 ; [L535] int tmp___2 ; [L538] splverifierCounter = 0 Loop: [L540] COND TRUE 1 [L542] COND TRUE splverifierCounter < 4 [L548] tmp = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp)) [L558] tmp___0 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___0)) [L568] tmp___2 = __VERIFIER_nondet_int() [L570] COND TRUE \read(tmp___2) [L571] COND FALSE !(\read(__SELECTED_FEATURE_startCommand)) [L595] CALL timeShift() [L623] COND FALSE !(\read(pumpRunning)) [L630] COND TRUE \read(systemActive) [L632] CALL processEnvironment() [L766] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) [L773] CALL processEnvironment__before__methaneAlarm() [L723] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) [L730] CALL processEnvironment__before__lowWaterSensor() [L680] COND FALSE !(\read(__SELECTED_FEATURE_highWaterSensor)) [L687] FCALL processEnvironment__before__highWaterSensor() [L730] RET processEnvironment__before__lowWaterSensor() [L773] RET processEnvironment__before__methaneAlarm() [L632] RET processEnvironment() [L638] CALL __utac_acc__Specification3_spec__1() [L995] int tmp ; [L996] int tmp___0 ; [L997] int tmp___1 ; [L1001] CALL, EXPR isMethaneLevelCritical() [L1076] int retValue_acc ; [L1079] retValue_acc = methaneLevelCritical [L1080] return (retValue_acc); [L1001] RET, EXPR isMethaneLevelCritical() [L1001] tmp = isMethaneLevelCritical() [L1003] COND FALSE !(\read(tmp)) [L1007] CALL, EXPR getWaterLevel() [L1108] int retValue_acc ; [L1111] retValue_acc = waterLevel [L1112] return (retValue_acc); [L1007] RET, EXPR getWaterLevel() [L1007] tmp___0 = getWaterLevel() [L1009] COND FALSE !(tmp___0 == 2) [L638] RET __utac_acc__Specification3_spec__1() [L595] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-22 20:25:37,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)