./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product47.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 637e567dc685efcee308b97525909830094648d3754bb07704f538b9a7ab34e7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:40:48,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:40:48,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:40:48,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:40:48,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:40:48,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:40:48,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:40:48,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:40:48,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:40:48,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:40:48,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:40:48,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:40:48,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:40:48,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:40:48,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:40:48,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:40:48,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:40:48,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:40:48,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:40:48,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:40:48,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:40:48,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:40:48,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:40:48,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:40:48,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:40:48,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:40:48,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:40:48,421 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:40:48,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:40:48,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:40:48,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:40:48,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:40:48,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:40:48,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:40:48,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:40:48,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:40:48,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:40:48,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:40:48,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:40:48,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:40:48,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:40:48,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:40:48,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:40:48,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:40:48,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:40:48,464 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:40:48,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:40:48,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:40:48,465 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:40:48,465 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:40:48,465 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:40:48,466 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:40:48,466 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:40:48,466 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:40:48,467 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:40:48,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:40:48,467 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:40:48,467 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:40:48,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:40:48,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:40:48,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:40:48,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:40:48,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:40:48,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:40:48,468 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:40:48,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:40:48,469 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:40:48,469 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:40:48,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:40:48,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:40:48,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:40:48,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:40:48,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:40:48,471 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:40:48,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 637e567dc685efcee308b97525909830094648d3754bb07704f538b9a7ab34e7 [2021-12-28 09:40:48,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:40:48,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:40:48,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:40:48,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:40:48,785 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:40:48,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2021-12-28 09:40:48,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96f5eadf/98bb6dd5449c4131a9762e99d312255e/FLAGaada12569 [2021-12-28 09:40:49,267 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:40:49,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2021-12-28 09:40:49,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96f5eadf/98bb6dd5449c4131a9762e99d312255e/FLAGaada12569 [2021-12-28 09:40:49,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96f5eadf/98bb6dd5449c4131a9762e99d312255e [2021-12-28 09:40:49,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:40:49,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:40:49,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:40:49,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:40:49,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:40:49,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbef51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49, skipping insertion in model container [2021-12-28 09:40:49,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:40:49,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:40:49,443 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_product47.cil.c[1605,1618] [2021-12-28 09:40:49,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:40:49,582 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:40:49,598 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_product47.cil.c[1605,1618] [2021-12-28 09:40:49,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:40:49,684 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:40:49,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49 WrapperNode [2021-12-28 09:40:49,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:40:49,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:40:49,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:40:49,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:40:49,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,760 INFO L137 Inliner]: procedures = 55, calls = 158, calls flagged for inlining = 55, calls inlined = 100, statements flattened = 747 [2021-12-28 09:40:49,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:40:49,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:40:49,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:40:49,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:40:49,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:40:49,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:40:49,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:40:49,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:40:49,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (1/1) ... [2021-12-28 09:40:49,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:40:49,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:40:49,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:40:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:40:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:40:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:40:49,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:40:49,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:40:49,963 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:40:49,964 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:40:50,340 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:40:50,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:40:50,347 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 09:40:50,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:40:50 BoogieIcfgContainer [2021-12-28 09:40:50,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:40:50,350 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:40:50,351 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:40:50,353 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:40:50,353 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:40:50,353 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:40:49" (1/3) ... [2021-12-28 09:40:50,354 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62c88ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:40:50, skipping insertion in model container [2021-12-28 09:40:50,354 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:40:50,354 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:49" (2/3) ... [2021-12-28 09:40:50,355 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62c88ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:40:50, skipping insertion in model container [2021-12-28 09:40:50,355 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:40:50,355 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:40:50" (3/3) ... [2021-12-28 09:40:50,356 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2021-12-28 09:40:50,418 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:40:50,418 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:40:50,418 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:40:50,418 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:40:50,418 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:40:50,418 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:40:50,419 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:40:50,419 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:40:50,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 190 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 189 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:40:50,472 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 124 [2021-12-28 09:40:50,472 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:50,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:50,477 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:50,478 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:50,478 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:40:50,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 190 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 189 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:40:50,491 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 124 [2021-12-28 09:40:50,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:50,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:50,493 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:50,493 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:50,500 INFO L791 eck$LassoCheckResult]: Stem: 171#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(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 58#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 136#L185true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 40#L178true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~2#1;havoc valid_product_~retValue_acc~2#1;valid_product_~retValue_acc~2#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~2#1; 82#L193true main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 128#L149true assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 71#L122true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet29#1, test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 21#L575-2true [2021-12-28 09:40:50,502 INFO L793 eck$LassoCheckResult]: Loop: 21#L575-2true assume !false; 124#L576true assume test_~splverifierCounter~0#1 < 4; 93#L577true test_~tmp~4#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 105#L585true assume !(0 != test_~tmp~4#1); 60#L585-2true test_~tmp___0~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 188#L595true assume !(0 != test_~tmp___0~0#1); 80#L595-2true test_~tmp___2~0#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 87#L605true assume 0 != test_~tmp___2~0#1; 131#L611-2true assume { :begin_inline_timeShift } true; 179#L647true assume !(0 != ~pumpRunning~0); 135#L647-2true assume !(0 != ~systemActive~0); 59#L654-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret51#1, __utac_acc__Specification3_spec__1_#t~ret52#1, __utac_acc__Specification3_spec__1_#t~ret53#1, __utac_acc__Specification3_spec__1_~tmp~9#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~9#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;isMethaneLevelCritical_~retValue_acc~9#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~9#1; 157#L894-3true __utac_acc__Specification3_spec__1_#t~ret51#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~9#1 := __utac_acc__Specification3_spec__1_#t~ret51#1;havoc __utac_acc__Specification3_spec__1_#t~ret51#1; 184#L954true assume 0 != __utac_acc__Specification3_spec__1_~tmp~9#1; 16#L960-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 54#L664true assume { :end_inline_timeShift } true; 21#L575-2true [2021-12-28 09:40:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:50,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-28 09:40:50,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:50,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668395051] [2021-12-28 09:40:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:50,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:50,632 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:50,673 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:50,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:50,676 INFO L85 PathProgramCache]: Analyzing trace with hash 879795478, now seen corresponding path program 1 times [2021-12-28 09:40:50,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:50,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004561920] [2021-12-28 09:40:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:50,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:50,683 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:50,689 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2059752742, now seen corresponding path program 1 times [2021-12-28 09:40:50,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:50,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073267035] [2021-12-28 09:40:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:50,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:40:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:40:50,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:40:50,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073267035] [2021-12-28 09:40:50,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073267035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:40:50,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:40:50,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 09:40:50,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728741212] [2021-12-28 09:40:50,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:40:50,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:40:50,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 09:40:50,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 09:40:50,960 INFO L87 Difference]: Start difference. First operand has 190 states, 189 states have (on average 1.3597883597883598) internal successors, (257), 189 states have internal predecessors, (257), 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 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:40:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:40:51,158 INFO L93 Difference]: Finished difference Result 437 states and 572 transitions. [2021-12-28 09:40:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 09:40:51,162 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 437 states and 572 transitions. [2021-12-28 09:40:51,166 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 283 [2021-12-28 09:40:51,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 437 states to 407 states and 542 transitions. [2021-12-28 09:40:51,176 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 407 [2021-12-28 09:40:51,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 407 [2021-12-28 09:40:51,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 407 states and 542 transitions. [2021-12-28 09:40:51,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:40:51,184 INFO L681 BuchiCegarLoop]: Abstraction has 407 states and 542 transitions. [2021-12-28 09:40:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states and 542 transitions. [2021-12-28 09:40:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 235. [2021-12-28 09:40:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 235 states have (on average 1.3319148936170213) internal successors, (313), 234 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:40:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 313 transitions. [2021-12-28 09:40:51,227 INFO L704 BuchiCegarLoop]: Abstraction has 235 states and 313 transitions. [2021-12-28 09:40:51,228 INFO L587 BuchiCegarLoop]: Abstraction has 235 states and 313 transitions. [2021-12-28 09:40:51,228 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:40:51,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 235 states and 313 transitions. [2021-12-28 09:40:51,230 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 164 [2021-12-28 09:40:51,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:51,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:51,232 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:51,232 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] [2021-12-28 09:40:51,233 INFO L791 eck$LassoCheckResult]: Stem: 820#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(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 734#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 735#L185 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 709#L178 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~2#1;havoc valid_product_~retValue_acc~2#1;valid_product_~retValue_acc~2#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~2#1; 710#L193 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 764#L149 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 752#L122 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet29#1, test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 679#L575-2 [2021-12-28 09:40:51,233 INFO L793 eck$LassoCheckResult]: Loop: 679#L575-2 assume !false; 680#L576 assume test_~splverifierCounter~0#1 < 4; 774#L577 test_~tmp~4#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 775#L585 assume !(0 != test_~tmp~4#1); 690#L585-2 test_~tmp___0~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 738#L595 assume !(0 != test_~tmp___0~0#1); 646#L595-2 test_~tmp___2~0#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 758#L605 assume 0 != test_~tmp___2~0#1; 744#L611-2 assume { :begin_inline_timeShift } true; 802#L647 assume !(0 != ~pumpRunning~0); 781#L647-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 807#L705 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret33#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; 741#L679-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 687#L671-3 assume { :end_inline_processEnvironment__wrappee__base } true; 688#L679-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 699#L705-1 assume { :end_inline_processEnvironment } true; 736#L654-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret51#1, __utac_acc__Specification3_spec__1_#t~ret52#1, __utac_acc__Specification3_spec__1_#t~ret53#1, __utac_acc__Specification3_spec__1_~tmp~9#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~9#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;isMethaneLevelCritical_~retValue_acc~9#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~9#1; 737#L894-3 __utac_acc__Specification3_spec__1_#t~ret51#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~9#1 := __utac_acc__Specification3_spec__1_#t~ret51#1;havoc __utac_acc__Specification3_spec__1_#t~ret51#1; 818#L954 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9#1; 660#L960-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 670#L664 assume { :end_inline_timeShift } true; 679#L575-2 [2021-12-28 09:40:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-28 09:40:51,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:51,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145277295] [2021-12-28 09:40:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:51,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:51,269 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:51,294 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:51,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash 826102028, now seen corresponding path program 1 times [2021-12-28 09:40:51,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:51,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037424303] [2021-12-28 09:40:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:40:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:40:51,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:40:51,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037424303] [2021-12-28 09:40:51,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037424303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:40:51,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:40:51,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:40:51,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318155139] [2021-12-28 09:40:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:40:51,321 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:40:51,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:40:51,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:40:51,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:40:51,324 INFO L87 Difference]: Start difference. First operand 235 states and 313 transitions. cyclomatic complexity: 81 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:40:51,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:40:51,413 INFO L93 Difference]: Finished difference Result 297 states and 379 transitions. [2021-12-28 09:40:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:40:51,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 297 states and 379 transitions. [2021-12-28 09:40:51,417 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 211 [2021-12-28 09:40:51,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 297 states to 297 states and 379 transitions. [2021-12-28 09:40:51,420 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 297 [2021-12-28 09:40:51,420 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 297 [2021-12-28 09:40:51,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 297 states and 379 transitions. [2021-12-28 09:40:51,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:40:51,422 INFO L681 BuchiCegarLoop]: Abstraction has 297 states and 379 transitions. [2021-12-28 09:40:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states and 379 transitions. [2021-12-28 09:40:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-12-28 09:40:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 297 states have (on average 1.2760942760942762) internal successors, (379), 296 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:40:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 379 transitions. [2021-12-28 09:40:51,435 INFO L704 BuchiCegarLoop]: Abstraction has 297 states and 379 transitions. [2021-12-28 09:40:51,436 INFO L587 BuchiCegarLoop]: Abstraction has 297 states and 379 transitions. [2021-12-28 09:40:51,436 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:40:51,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 297 states and 379 transitions. [2021-12-28 09:40:51,438 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 211 [2021-12-28 09:40:51,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:51,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:51,440 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:51,440 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] [2021-12-28 09:40:51,441 INFO L791 eck$LassoCheckResult]: Stem: 1377#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(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1274#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 1275#L185 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1249#L178 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~2#1;havoc valid_product_~retValue_acc~2#1;valid_product_~retValue_acc~2#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~2#1; 1250#L193 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 1306#L149 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 1294#L122 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet29#1, test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1269#L575-2 [2021-12-28 09:40:51,442 INFO L793 eck$LassoCheckResult]: Loop: 1269#L575-2 assume !false; 1451#L576 assume test_~splverifierCounter~0#1 < 4; 1450#L577 test_~tmp~4#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 1330#L585 assume !(0 != test_~tmp~4#1); 1225#L585-2 test_~tmp___0~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 1446#L595 assume !(0 != test_~tmp___0~0#1); 1444#L595-2 test_~tmp___2~0#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 1443#L605 assume 0 != test_~tmp___2~0#1; 1351#L611-2 assume { :begin_inline_timeShift } true; 1352#L647 assume !(0 != ~pumpRunning~0); 1358#L647-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 1359#L705 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret33#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; 1282#L679-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret45#1, isHighWaterLevel_~retValue_acc~8#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~8#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~11#1;havoc isHighWaterSensorDry_~retValue_acc~11#1; 1283#L934-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~11#1; 1230#L939-1 isHighWaterLevel_#t~ret45#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret45#1;havoc isHighWaterLevel_#t~ret45#1; 1231#L824-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1232#L824-5 isHighWaterLevel_~retValue_acc~8#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~8#1; 1233#L830-1 processEnvironment__wrappee__methaneQuery_#t~ret33#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~5#1 := processEnvironment__wrappee__methaneQuery_#t~ret33#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret33#1; 1379#L683-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1234#L671-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1235#L679-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 1236#L705-1 assume { :end_inline_processEnvironment } true; 1308#L654-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret51#1, __utac_acc__Specification3_spec__1_#t~ret52#1, __utac_acc__Specification3_spec__1_#t~ret53#1, __utac_acc__Specification3_spec__1_~tmp~9#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~9#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;isMethaneLevelCritical_~retValue_acc~9#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~9#1; 1456#L894-3 __utac_acc__Specification3_spec__1_#t~ret51#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~9#1 := __utac_acc__Specification3_spec__1_#t~ret51#1;havoc __utac_acc__Specification3_spec__1_#t~ret51#1; 1453#L954 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9#1; 1452#L960-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1268#L664 assume { :end_inline_timeShift } true; 1269#L575-2 [2021-12-28 09:40:51,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-28 09:40:51,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:51,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725127870] [2021-12-28 09:40:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:51,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:51,468 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:51,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:51,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:51,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1851559100, now seen corresponding path program 1 times [2021-12-28 09:40:51,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:51,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145538783] [2021-12-28 09:40:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:51,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:51,503 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:51,515 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1476271360, now seen corresponding path program 1 times [2021-12-28 09:40:51,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:51,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431329042] [2021-12-28 09:40:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:51,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:40:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:40:51,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:40:51,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431329042] [2021-12-28 09:40:51,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431329042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:40:51,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:40:51,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 09:40:51,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796479867] [2021-12-28 09:40:51,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:40:51,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:40:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 09:40:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 09:40:51,824 INFO L87 Difference]: Start difference. First operand 297 states and 379 transitions. cyclomatic complexity: 85 Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:40:51,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:40:51,963 INFO L93 Difference]: Finished difference Result 1015 states and 1288 transitions. [2021-12-28 09:40:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 09:40:51,964 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1015 states and 1288 transitions. [2021-12-28 09:40:51,968 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 753 [2021-12-28 09:40:51,971 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1015 states to 1015 states and 1288 transitions. [2021-12-28 09:40:51,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1015 [2021-12-28 09:40:51,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1015 [2021-12-28 09:40:51,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1015 states and 1288 transitions. [2021-12-28 09:40:51,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:40:51,973 INFO L681 BuchiCegarLoop]: Abstraction has 1015 states and 1288 transitions. [2021-12-28 09:40:51,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states and 1288 transitions. [2021-12-28 09:40:52,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 587. [2021-12-28 09:40:52,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 587 states have (on average 1.2589437819420783) internal successors, (739), 586 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:40:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 739 transitions. [2021-12-28 09:40:52,004 INFO L704 BuchiCegarLoop]: Abstraction has 587 states and 739 transitions. [2021-12-28 09:40:52,004 INFO L587 BuchiCegarLoop]: Abstraction has 587 states and 739 transitions. [2021-12-28 09:40:52,004 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:40:52,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 587 states and 739 transitions. [2021-12-28 09:40:52,006 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 422 [2021-12-28 09:40:52,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:40:52,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:40:52,007 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:40:52,007 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] [2021-12-28 09:40:52,007 INFO L791 eck$LassoCheckResult]: Stem: 2723#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(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 2604#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 2605#L185 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2580#L178 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~2#1;havoc valid_product_~retValue_acc~2#1;valid_product_~retValue_acc~2#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~2#1; 2581#L193 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 2640#L149 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 2625#L122 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet29#1, test_#t~nondet30#1, test_#t~nondet31#1, test_#t~nondet32#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2626#L575-2 [2021-12-28 09:40:52,008 INFO L793 eck$LassoCheckResult]: Loop: 2626#L575-2 assume !false; 3027#L576 assume test_~splverifierCounter~0#1 < 4; 3028#L577 test_~tmp~4#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 3074#L585 assume !(0 != test_~tmp~4#1); 3070#L585-2 test_~tmp___0~0#1 := test_#t~nondet30#1;havoc test_#t~nondet30#1; 3060#L595 assume !(0 != test_~tmp___0~0#1); 3058#L595-2 test_~tmp___2~0#1 := test_#t~nondet31#1;havoc test_#t~nondet31#1; 3056#L605 assume 0 != test_~tmp___2~0#1; 3044#L611-2 assume { :begin_inline_timeShift } true; 3042#L647 assume !(0 != ~pumpRunning~0); 2694#L647-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret34#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 2695#L705 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret33#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; 2611#L679-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret45#1, isHighWaterLevel_~retValue_acc~8#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~8#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~11#1;havoc isHighWaterSensorDry_~retValue_acc~11#1; 2612#L934-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~11#1; 2562#L939-1 isHighWaterLevel_#t~ret45#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret45#1;havoc isHighWaterLevel_#t~ret45#1; 2563#L824-3 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 2560#L824-5 isHighWaterLevel_~retValue_acc~8#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~8#1; 2561#L830-1 processEnvironment__wrappee__methaneQuery_#t~ret33#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__methaneQuery_~tmp~5#1 := processEnvironment__wrappee__methaneQuery_#t~ret33#1;havoc processEnvironment__wrappee__methaneQuery_#t~ret33#1; 2730#L683-3 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2564#L671-2 assume { :end_inline_processEnvironment__wrappee__base } true; 2565#L679-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 2566#L705-1 assume { :end_inline_processEnvironment } true; 2641#L654-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret51#1, __utac_acc__Specification3_spec__1_#t~ret52#1, __utac_acc__Specification3_spec__1_#t~ret53#1, __utac_acc__Specification3_spec__1_~tmp~9#1, __utac_acc__Specification3_spec__1_~tmp___0~2#1, __utac_acc__Specification3_spec__1_~tmp___1~1#1;havoc __utac_acc__Specification3_spec__1_~tmp~9#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~2#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;isMethaneLevelCritical_~retValue_acc~9#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~9#1; 3036#L894-3 __utac_acc__Specification3_spec__1_#t~ret51#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~9#1 := __utac_acc__Specification3_spec__1_#t~ret51#1;havoc __utac_acc__Specification3_spec__1_#t~ret51#1; 3035#L954 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~9#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~10#1;havoc getWaterLevel_~retValue_acc~10#1;getWaterLevel_~retValue_acc~10#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~10#1; 3034#L926 __utac_acc__Specification3_spec__1_#t~ret52#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~2#1 := __utac_acc__Specification3_spec__1_#t~ret52#1;havoc __utac_acc__Specification3_spec__1_#t~ret52#1; 3031#L960 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2#1); 3030#L960-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 3029#L664 assume { :end_inline_timeShift } true; 2626#L575-2 [2021-12-28 09:40:52,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-28 09:40:52,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:52,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172693900] [2021-12-28 09:40:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:52,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:52,015 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:52,021 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:52,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:52,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1230580169, now seen corresponding path program 1 times [2021-12-28 09:40:52,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:52,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875293254] [2021-12-28 09:40:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:52,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:52,040 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:52,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:52,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:40:52,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1356314893, now seen corresponding path program 1 times [2021-12-28 09:40:52,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:40:52,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750957269] [2021-12-28 09:40:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:40:52,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:40:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:52,061 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:40:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:40:52,071 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:40:54,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:40:54 BoogieIcfgContainer [2021-12-28 09:40:54,831 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:40:54,831 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:40:54,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:40:54,832 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:40:54,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:40:50" (3/4) ... [2021-12-28 09:40:54,834 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:40:54,870 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:40:54,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:40:54,870 INFO L158 Benchmark]: Toolchain (without parser) took 5573.43ms. Allocated memory was 54.5MB in the beginning and 178.3MB in the end (delta: 123.7MB). Free memory was 30.7MB in the beginning and 79.6MB in the end (delta: -48.9MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. [2021-12-28 09:40:54,871 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 32.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:40:54,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.83ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 30.5MB in the beginning and 53.4MB in the end (delta: -22.9MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-12-28 09:40:54,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.14ms. Allocated memory is still 77.6MB. Free memory was 53.4MB in the beginning and 49.5MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:40:54,872 INFO L158 Benchmark]: Boogie Preprocessor took 55.49ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 47.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 09:40:54,872 INFO L158 Benchmark]: RCFGBuilder took 531.98ms. Allocated memory is still 77.6MB. Free memory was 47.1MB in the beginning and 39.4MB in the end (delta: 7.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-12-28 09:40:54,872 INFO L158 Benchmark]: BuchiAutomizer took 4480.35ms. Allocated memory was 77.6MB in the beginning and 178.3MB in the end (delta: 100.7MB). Free memory was 39.4MB in the beginning and 82.6MB in the end (delta: -43.2MB). Peak memory consumption was 75.7MB. Max. memory is 16.1GB. [2021-12-28 09:40:54,873 INFO L158 Benchmark]: Witness Printer took 38.63ms. Allocated memory is still 178.3MB. Free memory was 82.6MB in the beginning and 79.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:40:54,874 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 36.7MB in the beginning and 36.7MB in the end (delta: 32.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.83ms. Allocated memory was 54.5MB in the beginning and 77.6MB in the end (delta: 23.1MB). Free memory was 30.5MB in the beginning and 53.4MB in the end (delta: -22.9MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.14ms. Allocated memory is still 77.6MB. Free memory was 53.4MB in the beginning and 49.5MB in the end (delta: 3.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.49ms. Allocated memory is still 77.6MB. Free memory was 49.5MB in the beginning and 47.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 531.98ms. Allocated memory is still 77.6MB. Free memory was 47.1MB in the beginning and 39.4MB in the end (delta: 7.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 4480.35ms. Allocated memory was 77.6MB in the beginning and 178.3MB in the end (delta: 100.7MB). Free memory was 39.4MB in the beginning and 82.6MB in the end (delta: -43.2MB). Peak memory consumption was 75.7MB. Max. memory is 16.1GB. * Witness Printer took 38.63ms. Allocated memory is still 178.3MB. Free memory was 82.6MB in the beginning and 79.6MB in the end (delta: 3.0MB). 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 6 locations. The remainder module has 587 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 600 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 587 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1997 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1997 mSDsluCounter, 3053 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2227 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 212 IncrementalHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 826 mSDtfsCounter, 212 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 575]: 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@50e2f6a7=0, retValue_acc=0, NULL=0, tmp___0=0, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@198c132d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55fdb269=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ad16025=29, tmp___0=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5b9812af=0, tmp=0, methaneLevelCritical=0, tmp=0, retValue_acc=0, retValue_acc=1, tmp___0=1, \result=0, retValue_acc=1, retValue_acc=1, tmp=1, \result=1, \result=1, tmp=0, tmp___2=29, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@626aa982=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34df406c=0, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b528b7e=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17c7eba3=0, \result=0, head=0, \result=1, tmp___1=0, NULL=0, waterLevel=1, systemActive=1, retValue_acc=0, tmp=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b9b90ff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46f6c696=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 575]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L59] int cleanupTimeShifts = 4; [L367] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L639] int pumpRunning = 0; [L640] int systemActive = 1; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; [L140] int retValue_acc ; [L141] int tmp ; [L145] FCALL select_helpers() [L146] FCALL select_features() [L147] CALL, EXPR valid_product() [L189] int retValue_acc ; [L192] retValue_acc = 1 [L193] return (retValue_acc); [L147] RET, EXPR valid_product() [L147] tmp = valid_product() [L149] COND TRUE \read(tmp) [L151] FCALL setup() [L152] CALL runTest() [L131] CALL test() [L566] int splverifierCounter ; [L567] int tmp ; [L568] int tmp___0 ; [L569] int tmp___1 ; [L570] int tmp___2 ; [L573] splverifierCounter = 0 Loop: [L575] COND TRUE 1 [L577] COND TRUE splverifierCounter < 4 [L583] tmp = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp)) [L593] tmp___0 = __VERIFIER_nondet_int() [L595] COND FALSE !(\read(tmp___0)) [L603] tmp___2 = __VERIFIER_nondet_int() [L605] COND TRUE \read(tmp___2) [L620] CALL timeShift() [L647] COND FALSE !(\read(pumpRunning)) [L654] COND TRUE \read(systemActive) [L656] CALL processEnvironment() [L702] int tmp ; [L705] COND FALSE !(\read(pumpRunning)) [L720] CALL processEnvironment__wrappee__methaneQuery() [L676] int tmp ; [L679] COND TRUE ! pumpRunning [L681] CALL, EXPR isHighWaterLevel() [L816] int retValue_acc ; [L817] int tmp ; [L818] int tmp___0 ; [L822] CALL, EXPR isHighWaterSensorDry() [L931] int retValue_acc ; [L934] COND TRUE waterLevel < 2 [L935] retValue_acc = 1 [L936] return (retValue_acc); [L822] RET, EXPR isHighWaterSensorDry() [L822] tmp = isHighWaterSensorDry() [L824] COND TRUE \read(tmp) [L825] tmp___0 = 0 [L829] retValue_acc = tmp___0 [L830] return (retValue_acc); [L681] RET, EXPR isHighWaterLevel() [L681] tmp = isHighWaterLevel() [L683] COND FALSE !(\read(tmp)) [L689] FCALL processEnvironment__wrappee__base() [L720] RET processEnvironment__wrappee__methaneQuery() [L656] RET processEnvironment() [L662] CALL __utac_acc__Specification3_spec__1() [L946] int tmp ; [L947] int tmp___0 ; [L948] int tmp___1 ; [L952] CALL, EXPR isMethaneLevelCritical() [L890] int retValue_acc ; [L893] retValue_acc = methaneLevelCritical [L894] return (retValue_acc); [L952] RET, EXPR isMethaneLevelCritical() [L952] tmp = isMethaneLevelCritical() [L954] COND FALSE !(\read(tmp)) [L958] CALL, EXPR getWaterLevel() [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); [L958] RET, EXPR getWaterLevel() [L958] tmp___0 = getWaterLevel() [L960] COND FALSE !(tmp___0 == 2) [L662] RET __utac_acc__Specification3_spec__1() [L620] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-28 09:40:54,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, 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)