./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product46.cil.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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_product46.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 458689bcd0930e2b07a61b7490d83be8ce4e59412b26a60581bf78c492ee412e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 04:17:08,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 04:17:08,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 04:17:08,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 04:17:08,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 04:17:08,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 04:17:08,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 04:17:08,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 04:17:08,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 04:17:08,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 04:17:08,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 04:17:08,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 04:17:08,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 04:17:08,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 04:17:08,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 04:17:08,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 04:17:08,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 04:17:08,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 04:17:08,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 04:17:08,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 04:17:08,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 04:17:08,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 04:17:08,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 04:17:08,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 04:17:08,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 04:17:08,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 04:17:08,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 04:17:08,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 04:17:08,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 04:17:08,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 04:17:08,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 04:17:08,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 04:17:08,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 04:17:08,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 04:17:08,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 04:17:08,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 04:17:08,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 04:17:08,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 04:17:08,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 04:17:08,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 04:17:08,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 04:17:08,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-02-21 04:17:08,098 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 04:17:08,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 04:17:08,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 04:17:08,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 04:17:08,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 04:17:08,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 04:17:08,100 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 04:17:08,100 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 04:17:08,101 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 04:17:08,101 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 04:17:08,101 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 04:17:08,101 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 04:17:08,101 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 04:17:08,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 04:17:08,101 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-21 04:17:08,102 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 04:17:08,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 04:17:08,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-21 04:17:08,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 04:17:08,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 04:17:08,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 04:17:08,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 04:17:08,103 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-21 04:17:08,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 04:17:08,103 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 04:17:08,103 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 04:17:08,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 04:17:08,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 04:17:08,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 04:17:08,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 04:17:08,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 04:17:08,105 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 04:17:08,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 458689bcd0930e2b07a61b7490d83be8ce4e59412b26a60581bf78c492ee412e [2022-02-21 04:17:08,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 04:17:08,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 04:17:08,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 04:17:08,324 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 04:17:08,325 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 04:17:08,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product46.cil.c [2022-02-21 04:17:08,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934ee8346/a3272536c97c48718a868d3b8f764392/FLAG7aeeefdc6 [2022-02-21 04:17:08,761 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 04:17:08,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product46.cil.c [2022-02-21 04:17:08,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934ee8346/a3272536c97c48718a868d3b8f764392/FLAG7aeeefdc6 [2022-02-21 04:17:08,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934ee8346/a3272536c97c48718a868d3b8f764392 [2022-02-21 04:17:08,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 04:17:08,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 04:17:08,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 04:17:08,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 04:17:08,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 04:17:08,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:17:08" (1/1) ... [2022-02-21 04:17:08,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256358a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:08, skipping insertion in model container [2022-02-21 04:17:08,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:17:08" (1/1) ... [2022-02-21 04:17:08,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 04:17:08,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 04:17:09,062 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_product46.cil.c[18431,18444] [2022-02-21 04:17:09,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 04:17:09,069 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 04:17:09,114 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_product46.cil.c[18431,18444] [2022-02-21 04:17:09,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 04:17:09,126 INFO L208 MainTranslator]: Completed translation [2022-02-21 04:17:09,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09 WrapperNode [2022-02-21 04:17:09,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 04:17:09,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 04:17:09,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 04:17:09,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 04:17:09,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,206 INFO L137 Inliner]: procedures = 55, calls = 157, calls flagged for inlining = 54, calls inlined = 99, statements flattened = 743 [2022-02-21 04:17:09,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 04:17:09,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 04:17:09,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 04:17:09,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 04:17:09,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 04:17:09,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 04:17:09,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 04:17:09,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 04:17:09,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (1/1) ... [2022-02-21 04:17:09,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 04:17:09,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 04:17:09,287 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) [2022-02-21 04:17:09,290 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 [2022-02-21 04:17:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-21 04:17:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-21 04:17:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 04:17:09,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 04:17:09,400 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 04:17:09,402 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 04:17:09,867 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 04:17:09,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 04:17:09,873 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-21 04:17:09,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:17:09 BoogieIcfgContainer [2022-02-21 04:17:09,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 04:17:09,876 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 04:17:09,876 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 04:17:09,880 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 04:17:09,882 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:17:09,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 04:17:08" (1/3) ... [2022-02-21 04:17:09,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7507a219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 04:17:09, skipping insertion in model container [2022-02-21 04:17:09,883 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:17:09,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:17:09" (2/3) ... [2022-02-21 04:17:09,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7507a219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 04:17:09, skipping insertion in model container [2022-02-21 04:17:09,884 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:17:09,884 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:17:09" (3/3) ... [2022-02-21 04:17:09,885 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product46.cil.c [2022-02-21 04:17:09,925 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 04:17:09,925 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 04:17:09,925 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 04:17:09,926 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 04:17:09,926 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 04:17:09,926 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 04:17:09,926 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 04:17:09,926 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 04:17:09,956 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 187 states, 186 states have (on average 1.3602150537634408) internal successors, (253), 186 states have internal predecessors, (253), 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) [2022-02-21 04:17:10,029 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 121 [2022-02-21 04:17:10,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:17:10,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:17:10,034 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:17:10,034 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:17:10,034 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 04:17:10,039 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 187 states, 186 states have (on average 1.3602150537634408) internal successors, (253), 186 states have internal predecessors, (253), 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) [2022-02-21 04:17:10,057 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 121 [2022-02-21 04:17:10,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:17:10,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:17:10,060 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:17:10,060 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:17:10,068 INFO L791 eck$LassoCheckResult]: Stem: 169#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(31, 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(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 64#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret31#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 161#L113true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 166#L106true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 44#L121true main_#t~ret31#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret31#1;havoc main_#t~ret31#1; 16#L579true assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 179#L555true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet50#1, test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~2#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 173#L906-2true [2022-02-21 04:17:10,069 INFO L793 eck$LassoCheckResult]: Loop: 173#L906-2true assume !false; 87#L907true assume test_~splverifierCounter~0#1 < 4; 109#L908true test_~tmp~9#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; 164#L916true assume !(0 != test_~tmp~9#1); 14#L916-2true test_~tmp___0~2#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 136#L926true assume !(0 != test_~tmp___0~2#1); 142#L926-2true test_~tmp___2~0#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 57#L936true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 163#L892true assume { :end_inline_startSystem } true; 157#L944-2true assume { :begin_inline_timeShift } true; 91#L700true assume !(0 != ~pumpRunning~0); 131#L700-2true assume !(0 != ~systemActive~0); 105#L707-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 60#L639-3true __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; 6#L63true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0#1; 182#L69-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 29#L717true assume { :end_inline_timeShift } true; 173#L906-2true [2022-02-21 04:17:10,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:10,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2022-02-21 04:17:10,082 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:10,082 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022312762] [2022-02-21 04:17:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:10,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:10,209 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:17:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:10,257 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:17:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash -633157613, now seen corresponding path program 1 times [2022-02-21 04:17:10,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:10,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192099179] [2022-02-21 04:17:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:10,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:17:10,351 INFO L290 TraceCheckUtils]: 0: Hoare triple {193#true} assume !false; {193#true} is VALID [2022-02-21 04:17:10,351 INFO L290 TraceCheckUtils]: 1: Hoare triple {193#true} assume test_~splverifierCounter~0#1 < 4; {193#true} is VALID [2022-02-21 04:17:10,351 INFO L290 TraceCheckUtils]: 2: Hoare triple {193#true} test_~tmp~9#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; {193#true} is VALID [2022-02-21 04:17:10,352 INFO L290 TraceCheckUtils]: 3: Hoare triple {193#true} assume !(0 != test_~tmp~9#1); {193#true} is VALID [2022-02-21 04:17:10,352 INFO L290 TraceCheckUtils]: 4: Hoare triple {193#true} test_~tmp___0~2#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; {193#true} is VALID [2022-02-21 04:17:10,352 INFO L290 TraceCheckUtils]: 5: Hoare triple {193#true} assume !(0 != test_~tmp___0~2#1); {193#true} is VALID [2022-02-21 04:17:10,352 INFO L290 TraceCheckUtils]: 6: Hoare triple {193#true} test_~tmp___2~0#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; {193#true} is VALID [2022-02-21 04:17:10,353 INFO L290 TraceCheckUtils]: 7: Hoare triple {193#true} assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; {195#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:17:10,353 INFO L290 TraceCheckUtils]: 8: Hoare triple {195#(<= 1 ~systemActive~0)} assume { :end_inline_startSystem } true; {195#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:17:10,354 INFO L290 TraceCheckUtils]: 9: Hoare triple {195#(<= 1 ~systemActive~0)} assume { :begin_inline_timeShift } true; {195#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:17:10,354 INFO L290 TraceCheckUtils]: 10: Hoare triple {195#(<= 1 ~systemActive~0)} assume !(0 != ~pumpRunning~0); {195#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:17:10,355 INFO L290 TraceCheckUtils]: 11: Hoare triple {195#(<= 1 ~systemActive~0)} assume !(0 != ~systemActive~0); {194#false} is VALID [2022-02-21 04:17:10,355 INFO L290 TraceCheckUtils]: 12: Hoare triple {194#false} assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; {194#false} is VALID [2022-02-21 04:17:10,355 INFO L290 TraceCheckUtils]: 13: Hoare triple {194#false} __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; {194#false} is VALID [2022-02-21 04:17:10,355 INFO L290 TraceCheckUtils]: 14: Hoare triple {194#false} assume 0 != __utac_acc__Specification3_spec__1_~tmp~0#1; {194#false} is VALID [2022-02-21 04:17:10,355 INFO L290 TraceCheckUtils]: 15: Hoare triple {194#false} assume { :end_inline___utac_acc__Specification3_spec__1 } true; {194#false} is VALID [2022-02-21 04:17:10,356 INFO L290 TraceCheckUtils]: 16: Hoare triple {194#false} assume { :end_inline_timeShift } true; {194#false} is VALID [2022-02-21 04:17:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:17:10,357 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:17:10,357 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192099179] [2022-02-21 04:17:10,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192099179] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:17:10,358 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:17:10,358 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 04:17:10,358 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87427005] [2022-02-21 04:17:10,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:17:10,363 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:17:10,364 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:17:10,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 04:17:10,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 04:17:10,391 INFO L87 Difference]: Start difference. First operand has 187 states, 186 states have (on average 1.3602150537634408) internal successors, (253), 186 states have internal predecessors, (253), 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 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-21 04:17:10,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:17:10,596 INFO L93 Difference]: Finished difference Result 184 states and 240 transitions. [2022-02-21 04:17:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 04:17:10,597 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-21 04:17:10,612 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:17:10,615 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 240 transitions. [2022-02-21 04:17:10,626 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 117 [2022-02-21 04:17:10,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 174 states and 229 transitions. [2022-02-21 04:17:10,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 174 [2022-02-21 04:17:10,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2022-02-21 04:17:10,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 229 transitions. [2022-02-21 04:17:10,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:17:10,634 INFO L681 BuchiCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-02-21 04:17:10,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 229 transitions. [2022-02-21 04:17:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-02-21 04:17:10,661 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:17:10,667 INFO L82 GeneralOperation]: Start isEquivalent. First operand 174 states and 229 transitions. Second operand has 174 states, 174 states have (on average 1.3160919540229885) internal successors, (229), 173 states have internal predecessors, (229), 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) [2022-02-21 04:17:10,668 INFO L74 IsIncluded]: Start isIncluded. First operand 174 states and 229 transitions. Second operand has 174 states, 174 states have (on average 1.3160919540229885) internal successors, (229), 173 states have internal predecessors, (229), 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) [2022-02-21 04:17:10,670 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand has 174 states, 174 states have (on average 1.3160919540229885) internal successors, (229), 173 states have internal predecessors, (229), 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) [2022-02-21 04:17:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:17:10,680 INFO L93 Difference]: Finished difference Result 174 states and 229 transitions. [2022-02-21 04:17:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-02-21 04:17:10,681 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:17:10,682 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:17:10,682 INFO L74 IsIncluded]: Start isIncluded. First operand has 174 states, 174 states have (on average 1.3160919540229885) internal successors, (229), 173 states have internal predecessors, (229), 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 174 states and 229 transitions. [2022-02-21 04:17:10,685 INFO L87 Difference]: Start difference. First operand has 174 states, 174 states have (on average 1.3160919540229885) internal successors, (229), 173 states have internal predecessors, (229), 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 174 states and 229 transitions. [2022-02-21 04:17:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:17:10,691 INFO L93 Difference]: Finished difference Result 174 states and 229 transitions. [2022-02-21 04:17:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-02-21 04:17:10,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:17:10,696 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:17:10,697 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:17:10,697 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:17:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 174 states have (on average 1.3160919540229885) internal successors, (229), 173 states have internal predecessors, (229), 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) [2022-02-21 04:17:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2022-02-21 04:17:10,707 INFO L704 BuchiCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-02-21 04:17:10,707 INFO L587 BuchiCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-02-21 04:17:10,707 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2022-02-21 04:17:10,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 229 transitions. [2022-02-21 04:17:10,710 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 117 [2022-02-21 04:17:10,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:17:10,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:17:10,711 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:17:10,711 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] [2022-02-21 04:17:10,712 INFO L791 eck$LassoCheckResult]: Stem: 551#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(31, 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(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 483#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret31#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 484#L113 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 549#L106 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 455#L121 main_#t~ret31#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret31#1;havoc main_#t~ret31#1; 406#L579 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 407#L555 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet50#1, test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~2#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 430#L906-2 [2022-02-21 04:17:10,712 INFO L793 eck$LassoCheckResult]: Loop: 430#L906-2 assume !false; 506#L907 assume test_~splverifierCounter~0#1 < 4; 507#L908 test_~tmp~9#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; 526#L916 assume !(0 != test_~tmp~9#1); 404#L916-2 test_~tmp___0~2#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 405#L926 assume !(0 != test_~tmp___0~2#1); 515#L926-2 test_~tmp___2~0#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 475#L936 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 395#L944 assume 0 != test_~tmp___1~1#1; 396#L944-2 assume { :begin_inline_timeShift } true; 513#L700 assume !(0 != ~pumpRunning~0); 496#L700-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret38#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 538#L758 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; 541#L732-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 422#L724-3 assume { :end_inline_processEnvironment__wrappee__base } true; 402#L732-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 403#L758-1 assume { :end_inline_processEnvironment } true; 523#L707-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 479#L639-3 __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; 385#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0#1; 386#L69-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 429#L717 assume { :end_inline_timeShift } true; 430#L906-2 [2022-02-21 04:17:10,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2022-02-21 04:17:10,713 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:10,713 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545756947] [2022-02-21 04:17:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:10,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:10,746 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:17:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:10,765 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:17:10,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:10,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1976629371, now seen corresponding path program 1 times [2022-02-21 04:17:10,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:10,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43678396] [2022-02-21 04:17:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:10,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:17:10,789 INFO L290 TraceCheckUtils]: 0: Hoare triple {907#true} assume !false; {907#true} is VALID [2022-02-21 04:17:10,790 INFO L290 TraceCheckUtils]: 1: Hoare triple {907#true} assume test_~splverifierCounter~0#1 < 4; {907#true} is VALID [2022-02-21 04:17:10,790 INFO L290 TraceCheckUtils]: 2: Hoare triple {907#true} test_~tmp~9#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; {907#true} is VALID [2022-02-21 04:17:10,790 INFO L290 TraceCheckUtils]: 3: Hoare triple {907#true} assume !(0 != test_~tmp~9#1); {907#true} is VALID [2022-02-21 04:17:10,791 INFO L290 TraceCheckUtils]: 4: Hoare triple {907#true} test_~tmp___0~2#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; {907#true} is VALID [2022-02-21 04:17:10,792 INFO L290 TraceCheckUtils]: 5: Hoare triple {907#true} assume !(0 != test_~tmp___0~2#1); {907#true} is VALID [2022-02-21 04:17:10,792 INFO L290 TraceCheckUtils]: 6: Hoare triple {907#true} test_~tmp___2~0#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; {907#true} is VALID [2022-02-21 04:17:10,792 INFO L290 TraceCheckUtils]: 7: Hoare triple {907#true} assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; {907#true} is VALID [2022-02-21 04:17:10,792 INFO L290 TraceCheckUtils]: 8: Hoare triple {907#true} assume 0 != test_~tmp___1~1#1; {907#true} is VALID [2022-02-21 04:17:10,792 INFO L290 TraceCheckUtils]: 9: Hoare triple {907#true} assume { :begin_inline_timeShift } true; {907#true} is VALID [2022-02-21 04:17:10,793 INFO L290 TraceCheckUtils]: 10: Hoare triple {907#true} assume !(0 != ~pumpRunning~0); {909#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:17:10,793 INFO L290 TraceCheckUtils]: 11: Hoare triple {909#(= ~pumpRunning~0 0)} assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret38#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; {909#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:17:10,794 INFO L290 TraceCheckUtils]: 12: Hoare triple {909#(= ~pumpRunning~0 0)} assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; {909#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:17:10,794 INFO L290 TraceCheckUtils]: 13: Hoare triple {909#(= ~pumpRunning~0 0)} assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; {908#false} is VALID [2022-02-21 04:17:10,794 INFO L290 TraceCheckUtils]: 14: Hoare triple {908#false} assume { :end_inline_processEnvironment__wrappee__base } true; {908#false} is VALID [2022-02-21 04:17:10,794 INFO L290 TraceCheckUtils]: 15: Hoare triple {908#false} assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; {908#false} is VALID [2022-02-21 04:17:10,795 INFO L290 TraceCheckUtils]: 16: Hoare triple {908#false} assume { :end_inline_processEnvironment } true; {908#false} is VALID [2022-02-21 04:17:10,795 INFO L290 TraceCheckUtils]: 17: Hoare triple {908#false} assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; {908#false} is VALID [2022-02-21 04:17:10,795 INFO L290 TraceCheckUtils]: 18: Hoare triple {908#false} __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; {908#false} is VALID [2022-02-21 04:17:10,795 INFO L290 TraceCheckUtils]: 19: Hoare triple {908#false} assume 0 != __utac_acc__Specification3_spec__1_~tmp~0#1; {908#false} is VALID [2022-02-21 04:17:10,795 INFO L290 TraceCheckUtils]: 20: Hoare triple {908#false} assume { :end_inline___utac_acc__Specification3_spec__1 } true; {908#false} is VALID [2022-02-21 04:17:10,796 INFO L290 TraceCheckUtils]: 21: Hoare triple {908#false} assume { :end_inline_timeShift } true; {908#false} is VALID [2022-02-21 04:17:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:17:10,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:17:10,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43678396] [2022-02-21 04:17:10,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43678396] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:17:10,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:17:10,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 04:17:10,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395538001] [2022-02-21 04:17:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:17:10,798 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:17:10,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:17:10,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 04:17:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 04:17:10,799 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. cyclomatic complexity: 57 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-02-21 04:17:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:17:11,033 INFO L93 Difference]: Finished difference Result 242 states and 307 transitions. [2022-02-21 04:17:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 04:17:11,033 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-02-21 04:17:11,050 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:17:11,051 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 242 states and 307 transitions. [2022-02-21 04:17:11,056 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 168 [2022-02-21 04:17:11,061 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 242 states to 242 states and 307 transitions. [2022-02-21 04:17:11,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 242 [2022-02-21 04:17:11,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 242 [2022-02-21 04:17:11,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 242 states and 307 transitions. [2022-02-21 04:17:11,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:17:11,062 INFO L681 BuchiCegarLoop]: Abstraction has 242 states and 307 transitions. [2022-02-21 04:17:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states and 307 transitions. [2022-02-21 04:17:11,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-02-21 04:17:11,068 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:17:11,069 INFO L82 GeneralOperation]: Start isEquivalent. First operand 242 states and 307 transitions. Second operand has 242 states, 242 states have (on average 1.2685950413223142) internal successors, (307), 241 states have internal predecessors, (307), 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) [2022-02-21 04:17:11,070 INFO L74 IsIncluded]: Start isIncluded. First operand 242 states and 307 transitions. Second operand has 242 states, 242 states have (on average 1.2685950413223142) internal successors, (307), 241 states have internal predecessors, (307), 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) [2022-02-21 04:17:11,070 INFO L87 Difference]: Start difference. First operand 242 states and 307 transitions. Second operand has 242 states, 242 states have (on average 1.2685950413223142) internal successors, (307), 241 states have internal predecessors, (307), 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) [2022-02-21 04:17:11,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:17:11,075 INFO L93 Difference]: Finished difference Result 242 states and 307 transitions. [2022-02-21 04:17:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 307 transitions. [2022-02-21 04:17:11,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:17:11,075 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:17:11,076 INFO L74 IsIncluded]: Start isIncluded. First operand has 242 states, 242 states have (on average 1.2685950413223142) internal successors, (307), 241 states have internal predecessors, (307), 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 242 states and 307 transitions. [2022-02-21 04:17:11,076 INFO L87 Difference]: Start difference. First operand has 242 states, 242 states have (on average 1.2685950413223142) internal successors, (307), 241 states have internal predecessors, (307), 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 242 states and 307 transitions. [2022-02-21 04:17:11,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:17:11,081 INFO L93 Difference]: Finished difference Result 242 states and 307 transitions. [2022-02-21 04:17:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 307 transitions. [2022-02-21 04:17:11,082 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:17:11,082 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:17:11,082 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:17:11,082 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:17:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 242 states have (on average 1.2685950413223142) internal successors, (307), 241 states have internal predecessors, (307), 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) [2022-02-21 04:17:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 307 transitions. [2022-02-21 04:17:11,087 INFO L704 BuchiCegarLoop]: Abstraction has 242 states and 307 transitions. [2022-02-21 04:17:11,087 INFO L587 BuchiCegarLoop]: Abstraction has 242 states and 307 transitions. [2022-02-21 04:17:11,087 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2022-02-21 04:17:11,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 307 transitions. [2022-02-21 04:17:11,109 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 168 [2022-02-21 04:17:11,109 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:17:11,109 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:17:11,110 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:17:11,110 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, 1, 1] [2022-02-21 04:17:11,110 INFO L791 eck$LassoCheckResult]: Stem: 1334#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(31, 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(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1253#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret31#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 1254#L113 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1331#L106 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 1223#L121 main_#t~ret31#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret31#1;havoc main_#t~ret31#1; 1179#L579 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 1180#L555 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet50#1, test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~2#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1198#L906-2 [2022-02-21 04:17:11,112 INFO L793 eck$LassoCheckResult]: Loop: 1198#L906-2 assume !false; 1280#L907 assume test_~splverifierCounter~0#1 < 4; 1281#L908 test_~tmp~9#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; 1300#L916 assume !(0 != test_~tmp~9#1); 1173#L916-2 test_~tmp___0~2#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 1174#L926 assume !(0 != test_~tmp___0~2#1); 1291#L926-2 test_~tmp___2~0#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 1243#L936 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 1244#L892 assume { :end_inline_startSystem } true; 1166#L944-2 assume { :begin_inline_timeShift } true; 1287#L700 assume !(0 != ~pumpRunning~0); 1288#L700-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret38#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 1317#L758 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; 1320#L732-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret49#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 1310#L679-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 1311#L684-1 isHighWaterLevel_#t~ret49#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret49#1;havoc isHighWaterLevel_#t~ret49#1; 1211#L877-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1212#L877-5 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 1245#L883-1 processEnvironment__wrappee__methaneQuery_#t~ret37#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~5#1 := processEnvironment__wrappee__methaneQuery_#t~ret37#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1; 1162#L736-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1164#L724-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1175#L732-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 1176#L758-1 assume { :end_inline_processEnvironment } true; 1298#L707-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 1248#L639-3 __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; 1157#L63 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0#1; 1158#L69-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1197#L717 assume { :end_inline_timeShift } true; 1198#L906-2 [2022-02-21 04:17:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2022-02-21 04:17:11,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:11,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989476798] [2022-02-21 04:17:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:11,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:11,141 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:17:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:11,153 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:17:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:11,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1738868290, now seen corresponding path program 1 times [2022-02-21 04:17:11,154 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:11,154 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508903721] [2022-02-21 04:17:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:11,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:11,165 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:17:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:11,171 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:17:11,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:11,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1305117058, now seen corresponding path program 1 times [2022-02-21 04:17:11,172 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:11,172 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980254187] [2022-02-21 04:17:11,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:11,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:17:11,238 INFO L290 TraceCheckUtils]: 0: Hoare triple {1885#true} 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(31, 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(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,238 INFO L290 TraceCheckUtils]: 1: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret31#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,239 INFO L290 TraceCheckUtils]: 2: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,239 INFO L290 TraceCheckUtils]: 3: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,239 INFO L290 TraceCheckUtils]: 4: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} main_#t~ret31#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret31#1;havoc main_#t~ret31#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,240 INFO L290 TraceCheckUtils]: 5: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,240 INFO L290 TraceCheckUtils]: 6: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet50#1, test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~2#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,240 INFO L290 TraceCheckUtils]: 7: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume !false; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,241 INFO L290 TraceCheckUtils]: 8: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume test_~splverifierCounter~0#1 < 4; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,241 INFO L290 TraceCheckUtils]: 9: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} test_~tmp~9#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,242 INFO L290 TraceCheckUtils]: 10: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume !(0 != test_~tmp~9#1); {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,242 INFO L290 TraceCheckUtils]: 11: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} test_~tmp___0~2#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,242 INFO L290 TraceCheckUtils]: 12: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume !(0 != test_~tmp___0~2#1); {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,243 INFO L290 TraceCheckUtils]: 13: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} test_~tmp___2~0#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,243 INFO L290 TraceCheckUtils]: 14: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,243 INFO L290 TraceCheckUtils]: 15: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :end_inline_startSystem } true; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,244 INFO L290 TraceCheckUtils]: 16: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :begin_inline_timeShift } true; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,244 INFO L290 TraceCheckUtils]: 17: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume !(0 != ~pumpRunning~0); {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,244 INFO L290 TraceCheckUtils]: 18: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret38#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,245 INFO L290 TraceCheckUtils]: 19: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,245 INFO L290 TraceCheckUtils]: 20: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret49#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,245 INFO L290 TraceCheckUtils]: 21: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,246 INFO L290 TraceCheckUtils]: 22: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} isHighWaterLevel_#t~ret49#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret49#1;havoc isHighWaterLevel_#t~ret49#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,246 INFO L290 TraceCheckUtils]: 23: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,246 INFO L290 TraceCheckUtils]: 24: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,246 INFO L290 TraceCheckUtils]: 25: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} processEnvironment__wrappee__methaneQuery_#t~ret37#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~5#1 := processEnvironment__wrappee__methaneQuery_#t~ret37#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,247 INFO L290 TraceCheckUtils]: 26: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,247 INFO L290 TraceCheckUtils]: 27: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :end_inline_processEnvironment__wrappee__base } true; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,247 INFO L290 TraceCheckUtils]: 28: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,248 INFO L290 TraceCheckUtils]: 29: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :end_inline_processEnvironment } true; {1887#(= ~methaneLevelCritical~0 0)} is VALID [2022-02-21 04:17:11,248 INFO L290 TraceCheckUtils]: 30: Hoare triple {1887#(= ~methaneLevelCritical~0 0)} assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; {1888#(= |ULTIMATE.start_isMethaneLevelCritical_#res#1| 0)} is VALID [2022-02-21 04:17:11,249 INFO L290 TraceCheckUtils]: 31: Hoare triple {1888#(= |ULTIMATE.start_isMethaneLevelCritical_#res#1| 0)} __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; {1889#(= |ULTIMATE.start___utac_acc__Specification3_spec__1_~tmp~0#1| 0)} is VALID [2022-02-21 04:17:11,249 INFO L290 TraceCheckUtils]: 32: Hoare triple {1889#(= |ULTIMATE.start___utac_acc__Specification3_spec__1_~tmp~0#1| 0)} assume 0 != __utac_acc__Specification3_spec__1_~tmp~0#1; {1886#false} is VALID [2022-02-21 04:17:11,249 INFO L290 TraceCheckUtils]: 33: Hoare triple {1886#false} assume { :end_inline___utac_acc__Specification3_spec__1 } true; {1886#false} is VALID [2022-02-21 04:17:11,249 INFO L290 TraceCheckUtils]: 34: Hoare triple {1886#false} assume { :end_inline_timeShift } true; {1886#false} is VALID [2022-02-21 04:17:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:17:11,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:17:11,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980254187] [2022-02-21 04:17:11,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980254187] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:17:11,250 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:17:11,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-21 04:17:11,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946952746] [2022-02-21 04:17:11,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:17:11,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:17:11,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-21 04:17:11,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-21 04:17:11,450 INFO L87 Difference]: Start difference. First operand 242 states and 307 transitions. cyclomatic complexity: 67 Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-02-21 04:17:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:17:12,374 INFO L93 Difference]: Finished difference Result 836 states and 1056 transitions. [2022-02-21 04:17:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-21 04:17:12,375 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-02-21 04:17:12,410 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:17:12,410 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 836 states and 1056 transitions. [2022-02-21 04:17:12,451 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 604 [2022-02-21 04:17:12,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 836 states to 836 states and 1056 transitions. [2022-02-21 04:17:12,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 836 [2022-02-21 04:17:12,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 836 [2022-02-21 04:17:12,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 836 states and 1056 transitions. [2022-02-21 04:17:12,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:17:12,495 INFO L681 BuchiCegarLoop]: Abstraction has 836 states and 1056 transitions. [2022-02-21 04:17:12,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states and 1056 transitions. [2022-02-21 04:17:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 477. [2022-02-21 04:17:12,505 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:17:12,506 INFO L82 GeneralOperation]: Start isEquivalent. First operand 836 states and 1056 transitions. Second operand has 477 states, 477 states have (on average 1.2557651991614256) internal successors, (599), 476 states have internal predecessors, (599), 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) [2022-02-21 04:17:12,507 INFO L74 IsIncluded]: Start isIncluded. First operand 836 states and 1056 transitions. Second operand has 477 states, 477 states have (on average 1.2557651991614256) internal successors, (599), 476 states have internal predecessors, (599), 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) [2022-02-21 04:17:12,508 INFO L87 Difference]: Start difference. First operand 836 states and 1056 transitions. Second operand has 477 states, 477 states have (on average 1.2557651991614256) internal successors, (599), 476 states have internal predecessors, (599), 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) [2022-02-21 04:17:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:17:12,549 INFO L93 Difference]: Finished difference Result 836 states and 1056 transitions. [2022-02-21 04:17:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1056 transitions. [2022-02-21 04:17:12,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:17:12,551 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:17:12,552 INFO L74 IsIncluded]: Start isIncluded. First operand has 477 states, 477 states have (on average 1.2557651991614256) internal successors, (599), 476 states have internal predecessors, (599), 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 836 states and 1056 transitions. [2022-02-21 04:17:12,553 INFO L87 Difference]: Start difference. First operand has 477 states, 477 states have (on average 1.2557651991614256) internal successors, (599), 476 states have internal predecessors, (599), 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 836 states and 1056 transitions. [2022-02-21 04:17:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:17:12,590 INFO L93 Difference]: Finished difference Result 836 states and 1056 transitions. [2022-02-21 04:17:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1056 transitions. [2022-02-21 04:17:12,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:17:12,591 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:17:12,591 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:17:12,592 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:17:12,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 477 states have (on average 1.2557651991614256) internal successors, (599), 476 states have internal predecessors, (599), 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) [2022-02-21 04:17:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 599 transitions. [2022-02-21 04:17:12,605 INFO L704 BuchiCegarLoop]: Abstraction has 477 states and 599 transitions. [2022-02-21 04:17:12,606 INFO L587 BuchiCegarLoop]: Abstraction has 477 states and 599 transitions. [2022-02-21 04:17:12,606 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2022-02-21 04:17:12,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 477 states and 599 transitions. [2022-02-21 04:17:12,608 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 336 [2022-02-21 04:17:12,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:17:12,608 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:17:12,608 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:17:12,608 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, 1, 1, 1, 1] [2022-02-21 04:17:12,609 INFO L791 eck$LassoCheckResult]: Stem: 2932#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(31, 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(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 2841#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret31#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 2842#L113 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2925#L106 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 2807#L121 main_#t~ret31#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret31#1;havoc main_#t~ret31#1; 2761#L579 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 2762#L555 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet50#1, test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_~splverifierCounter~0#1, test_~tmp~9#1, test_~tmp___0~2#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~9#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2942#L906-2 [2022-02-21 04:17:12,609 INFO L793 eck$LassoCheckResult]: Loop: 2942#L906-2 assume !false; 3138#L907 assume test_~splverifierCounter~0#1 < 4; 3139#L908 test_~tmp~9#1 := test_#t~nondet50#1;havoc test_#t~nondet50#1; 3205#L916 assume !(0 != test_~tmp~9#1); 3203#L916-2 test_~tmp___0~2#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 3202#L926 assume !(0 != test_~tmp___0~2#1); 3199#L926-2 test_~tmp___2~0#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 3198#L936 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 3196#L892 assume { :end_inline_startSystem } true; 3194#L944-2 assume { :begin_inline_timeShift } true; 3178#L700 assume !(0 != ~pumpRunning~0); 3176#L700-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret38#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 3175#L758 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; 3123#L732-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret49#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~8#1;havoc isHighWaterSensorDry_~retValue_acc~8#1; 3171#L679-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~8#1; 3169#L684-1 isHighWaterLevel_#t~ret49#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret49#1;havoc isHighWaterLevel_#t~ret49#1; 3167#L877-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 3162#L877-5 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 3161#L883-1 processEnvironment__wrappee__methaneQuery_#t~ret37#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~5#1 := processEnvironment__wrappee__methaneQuery_#t~ret37#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1; 3111#L736-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2763#L724-2 assume { :end_inline_processEnvironment__wrappee__base } true; 2757#L732-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 2758#L758-1 assume { :end_inline_processEnvironment } true; 2890#L707-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;havoc isMethaneLevelCritical_~retValue_acc~6#1;isMethaneLevelCritical_~retValue_acc~6#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~6#1; 3156#L639-3 __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; 3155#L63 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~7#1;havoc getWaterLevel_~retValue_acc~7#1;getWaterLevel_~retValue_acc~7#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~7#1; 3154#L671 __utac_acc__Specification3_spec__1_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~0#1 := __utac_acc__Specification3_spec__1_#t~ret5#1;havoc __utac_acc__Specification3_spec__1_#t~ret5#1; 3152#L69 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0#1); 3150#L69-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 3149#L717 assume { :end_inline_timeShift } true; 2942#L906-2 [2022-02-21 04:17:12,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:12,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2022-02-21 04:17:12,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:12,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106991173] [2022-02-21 04:17:12,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:12,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:12,621 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:17:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:12,631 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:17:12,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:12,632 INFO L85 PathProgramCache]: Analyzing trace with hash -308894447, now seen corresponding path program 1 times [2022-02-21 04:17:12,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:12,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115782481] [2022-02-21 04:17:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:12,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:12,642 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:17:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:12,654 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:17:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:17:12,655 INFO L85 PathProgramCache]: Analyzing trace with hash 88296405, now seen corresponding path program 1 times [2022-02-21 04:17:12,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:17:12,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330545426] [2022-02-21 04:17:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:17:12,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:17:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:12,672 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:17:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:17:12,691 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:17:15,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 04:17:15 BoogieIcfgContainer [2022-02-21 04:17:15,106 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 04:17:15,107 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 04:17:15,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 04:17:15,107 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 04:17:15,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:17:09" (3/4) ... [2022-02-21 04:17:15,109 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-02-21 04:17:15,155 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 04:17:15,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 04:17:15,156 INFO L158 Benchmark]: Toolchain (without parser) took 6371.37ms. Allocated memory was 98.6MB in the beginning and 218.1MB in the end (delta: 119.5MB). Free memory was 65.8MB in the beginning and 130.6MB in the end (delta: -64.8MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2022-02-21 04:17:15,156 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 04:17:15,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.30ms. Allocated memory is still 98.6MB. Free memory was 65.6MB in the beginning and 63.7MB in the end (delta: 1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-21 04:17:15,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.02ms. Allocated memory is still 98.6MB. Free memory was 63.7MB in the beginning and 59.1MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-02-21 04:17:15,157 INFO L158 Benchmark]: Boogie Preprocessor took 54.79ms. Allocated memory is still 98.6MB. Free memory was 59.1MB in the beginning and 56.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 04:17:15,158 INFO L158 Benchmark]: RCFGBuilder took 612.12ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 56.1MB in the beginning and 94.4MB in the end (delta: -38.3MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-02-21 04:17:15,158 INFO L158 Benchmark]: BuchiAutomizer took 5230.43ms. Allocated memory was 130.0MB in the beginning and 218.1MB in the end (delta: 88.1MB). Free memory was 94.4MB in the beginning and 133.7MB in the end (delta: -39.3MB). Peak memory consumption was 96.2MB. Max. memory is 16.1GB. [2022-02-21 04:17:15,158 INFO L158 Benchmark]: Witness Printer took 48.44ms. Allocated memory is still 218.1MB. Free memory was 133.7MB in the beginning and 130.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 04:17:15,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.30ms. Allocated memory is still 98.6MB. Free memory was 65.6MB in the beginning and 63.7MB in the end (delta: 1.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.02ms. Allocated memory is still 98.6MB. Free memory was 63.7MB in the beginning and 59.1MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.79ms. Allocated memory is still 98.6MB. Free memory was 59.1MB in the beginning and 56.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 612.12ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 56.1MB in the beginning and 94.4MB in the end (delta: -38.3MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 5230.43ms. Allocated memory was 130.0MB in the beginning and 218.1MB in the end (delta: 88.1MB). Free memory was 94.4MB in the beginning and 133.7MB in the end (delta: -39.3MB). Peak memory consumption was 96.2MB. Max. memory is 16.1GB. * Witness Printer took 48.44ms. Allocated memory is still 218.1MB. Free memory was 133.7MB in the beginning and 130.6MB in the end (delta: 3.1MB). 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 477 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.2s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 359 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 477 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1265 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1265 mSDsluCounter, 1906 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1130 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 170 IncrementalHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 776 mSDtfsCounter, 170 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 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: 906]: 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@e947a6f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4254ed7f=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a87cae5=29, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23d8d04b=0, head=0, pumpRunning=0, tmp___0=0, retValue_acc=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5375192f=0, retValue_acc=1, tmp=0, methaneLevelCritical=0, tmp=0, tmp___0=1, \result=0, tmp=0, tmp=1, retValue_acc=1, retValue_acc=0, \result=1, \result=1, retValue_acc=1, retValue_acc=0, tmp___1=0, tmp___2=29, tmp=1, cleanupTimeShifts=4, \result=0, head=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d4cde44=0, tmp___1=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@25e57594=0, waterLevel=1, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2abeb02f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d6189f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7323f9c6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d71f435=0, \result=0, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 906]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L295] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int cleanupTimeShifts = 4; [L596] int waterLevel = 1; [L597] int methaneLevelCritical = 0; [L693] int pumpRunning = 0; [L694] int systemActive = 1; [L570] int retValue_acc ; [L571] int tmp ; [L575] FCALL select_helpers() [L576] FCALL select_features() [L577] CALL, EXPR valid_product() [L117] int retValue_acc ; [L120] retValue_acc = 1 [L121] return (retValue_acc); [L577] RET, EXPR valid_product() [L577] tmp = valid_product() [L579] COND TRUE \read(tmp) [L581] FCALL setup() [L582] CALL runTest() [L564] CALL test() [L897] int splverifierCounter ; [L898] int tmp ; [L899] int tmp___0 ; [L900] int tmp___1 ; [L901] int tmp___2 ; [L904] splverifierCounter = 0 Loop: [L906] COND TRUE 1 [L908] COND TRUE splverifierCounter < 4 [L914] tmp = __VERIFIER_nondet_int() [L916] COND FALSE !(\read(tmp)) [L924] tmp___0 = __VERIFIER_nondet_int() [L926] COND FALSE !(\read(tmp___0)) [L934] tmp___2 = __VERIFIER_nondet_int() [L936] COND TRUE \read(tmp___2) [L938] CALL startSystem() [L891] systemActive = 1 [L938] RET startSystem() [L951] CALL timeShift() [L700] COND FALSE !(\read(pumpRunning)) [L707] COND TRUE \read(systemActive) [L709] CALL processEnvironment() [L755] int tmp ; [L758] COND FALSE !(\read(pumpRunning)) [L773] CALL processEnvironment__wrappee__methaneQuery() [L729] int tmp ; [L732] COND TRUE ! pumpRunning [L734] CALL, EXPR isHighWaterLevel() [L869] int retValue_acc ; [L870] int tmp ; [L871] int tmp___0 ; [L875] CALL, EXPR isHighWaterSensorDry() [L676] int retValue_acc ; [L679] COND TRUE waterLevel < 2 [L680] retValue_acc = 1 [L681] return (retValue_acc); [L875] RET, EXPR isHighWaterSensorDry() [L875] tmp = isHighWaterSensorDry() [L877] COND TRUE \read(tmp) [L878] tmp___0 = 0 [L882] retValue_acc = tmp___0 [L883] return (retValue_acc); [L734] RET, EXPR isHighWaterLevel() [L734] tmp = isHighWaterLevel() [L736] COND FALSE !(\read(tmp)) [L742] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment__wrappee__methaneQuery() [L709] RET processEnvironment() [L715] CALL __utac_acc__Specification3_spec__1() [L55] int tmp ; [L56] int tmp___0 ; [L57] int tmp___1 ; [L61] CALL, EXPR isMethaneLevelCritical() [L635] int retValue_acc ; [L638] retValue_acc = methaneLevelCritical [L639] return (retValue_acc); [L61] RET, EXPR isMethaneLevelCritical() [L61] tmp = isMethaneLevelCritical() [L63] COND FALSE !(\read(tmp)) [L67] CALL, EXPR getWaterLevel() [L667] int retValue_acc ; [L670] retValue_acc = waterLevel [L671] return (retValue_acc); [L67] RET, EXPR getWaterLevel() [L67] tmp___0 = getWaterLevel() [L69] COND FALSE !(tmp___0 == 2) [L715] RET __utac_acc__Specification3_spec__1() [L951] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-02-21 04:17:15,207 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)