./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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_spec1_product51.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 3219ef411dc22888fa71dd9e88c133c38c4dd29d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:57:38,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:57:38,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:57:38,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:57:38,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:57:38,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:57:38,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:57:38,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:57:38,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:57:38,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:57:38,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:57:38,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:57:38,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:57:38,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:57:38,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:57:38,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:57:38,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:57:38,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:57:38,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:57:38,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:57:38,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:57:38,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:57:38,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:57:38,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:57:38,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:57:38,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:57:38,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:57:38,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:57:38,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:57:38,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:57:38,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:57:38,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:57:38,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:57:38,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:57:38,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:57:38,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:57:38,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:57:38,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:57:38,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:57:38,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:57:38,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:57:38,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:57:38,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:57:38,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:57:38,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:57:38,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:57:38,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:57:38,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:57:38,657 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:57:38,657 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:57:38,657 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:57:38,658 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:57:38,658 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:57:38,659 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:57:38,659 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:57:38,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:57:38,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:57:38,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:57:38,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:57:38,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:57:38,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:57:38,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:57:38,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:57:38,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:57:38,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:57:38,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:57:38,661 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:57:38,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:57:38,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:57:38,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:57:38,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:57:38,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:57:38,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:57:38,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:57:38,663 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:57:38,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3219ef411dc22888fa71dd9e88c133c38c4dd29d [2021-08-27 15:57:38,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:57:38,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:57:38,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:57:38,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:57:38,985 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:57:38,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2021-08-27 15:57:39,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29df7c4db/e54453a32aba4c7bbe90bc0b359909ef/FLAG99ace4c3d [2021-08-27 15:57:39,522 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:57:39,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2021-08-27 15:57:39,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29df7c4db/e54453a32aba4c7bbe90bc0b359909ef/FLAG99ace4c3d [2021-08-27 15:57:39,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29df7c4db/e54453a32aba4c7bbe90bc0b359909ef [2021-08-27 15:57:39,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:57:39,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:57:39,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:57:39,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:57:39,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:57:39,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:39" (1/1) ... [2021-08-27 15:57:39,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf7e5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:39, skipping insertion in model container [2021-08-27 15:57:39,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:39" (1/1) ... [2021-08-27 15:57:39,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:57:39,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:57:40,153 WARN L228 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_spec1_product51.cil.c[14932,14945] [2021-08-27 15:57:40,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:57:40,190 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:57:40,261 WARN L228 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_spec1_product51.cil.c[14932,14945] [2021-08-27 15:57:40,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:57:40,305 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:57:40,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40 WrapperNode [2021-08-27 15:57:40,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:57:40,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:57:40,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:57:40,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:57:40,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:57:40,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:57:40,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:57:40,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:57:40,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:57:40,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:57:40,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:57:40,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:57:40,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (1/1) ... [2021-08-27 15:57:40,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:57:40,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:57:40,477 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) [2021-08-27 15:57:40,505 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 [2021-08-27 15:57:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:57:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:57:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:57:40,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:57:41,306 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:57:41,307 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2021-08-27 15:57:41,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:41 BoogieIcfgContainer [2021-08-27 15:57:41,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:57:41,309 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:57:41,310 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:57:41,312 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:57:41,313 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:41,313 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:57:39" (1/3) ... [2021-08-27 15:57:41,314 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1442865d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:57:41, skipping insertion in model container [2021-08-27 15:57:41,314 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:41,314 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:40" (2/3) ... [2021-08-27 15:57:41,314 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1442865d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:57:41, skipping insertion in model container [2021-08-27 15:57:41,315 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:41,315 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:41" (3/3) ... [2021-08-27 15:57:41,316 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2021-08-27 15:57:41,352 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:57:41,352 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:57:41,352 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:57:41,352 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:57:41,352 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:57:41,353 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:57:41,353 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:57:41,353 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:57:41,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 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) [2021-08-27 15:57:41,386 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-08-27 15:57:41,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:41,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:41,393 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:41,393 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:41,393 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:57:41,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 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) [2021-08-27 15:57:41,400 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 75 [2021-08-27 15:57:41,400 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:41,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:41,401 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:41,401 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:41,405 INFO L791 eck$LassoCheckResult]: Stem: 110#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(21);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(25);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 37#L-1true havoc main_#res;havoc main_#t~ret70, main_~retValue_acc~9, main_~tmp~9;havoc main_~retValue_acc~9;havoc main_~tmp~9; 29#L736true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 32#L744true main_#t~ret70 := valid_product_#res;main_~tmp~9 := main_#t~ret70;havoc main_#t~ret70; 96#L857true assume 0 != main_~tmp~9; 107#L834true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 115#L757-1true [2021-08-27 15:57:41,406 INFO L793 eck$LassoCheckResult]: Loop: 115#L757-1true assume !false; 34#L58true assume test_~splverifierCounter~0 < 4; 100#L59true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 109#L67true assume !(0 != test_~tmp~0); 88#L67-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 72#L77true assume !(0 != test_~tmp___0~0); 81#L77-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 53#L87true assume 0 != test_~tmp___2~0; 104#L93-1true assume !(0 != ~pumpRunning~0); 41#L131true assume !(0 != ~systemActive~0); 61#L138true havoc __utac_acc__Specification1_spec__1_#t~ret68, __utac_acc__Specification1_spec__1_#t~ret69, __utac_acc__Specification1_spec__1_~tmp~8, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~8;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 86#L915true __utac_acc__Specification1_spec__1_#t~ret68 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~8 := __utac_acc__Specification1_spec__1_#t~ret68;havoc __utac_acc__Specification1_spec__1_#t~ret68; 56#L757true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~8); 115#L757-1true [2021-08-27 15:57:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:41,411 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:57:41,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:41,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636061044] [2021-08-27 15:57:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:41,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:41,624 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:41,769 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:41,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1671186421, now seen corresponding path program 1 times [2021-08-27 15:57:41,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:41,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008929375] [2021-08-27 15:57:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:41,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:41,779 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:41,786 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:41,788 INFO L82 PathProgramCache]: Analyzing trace with hash 43092517, now seen corresponding path program 1 times [2021-08-27 15:57:41,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:41,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903254651] [2021-08-27 15:57:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:41,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:57:41,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:41,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903254651] [2021-08-27 15:57:41,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903254651] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:41,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:41,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:57:41,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99659620] [2021-08-27 15:57:42,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:42,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 15:57:42,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 15:57:42,064 INFO L87 Difference]: Start difference. First operand has 116 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 115 states have internal predecessors, (177), 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 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-08-27 15:57:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:42,332 INFO L93 Difference]: Finished difference Result 276 states and 396 transitions. [2021-08-27 15:57:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 15:57:42,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 276 states and 396 transitions. [2021-08-27 15:57:42,347 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 177 [2021-08-27 15:57:42,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 276 states to 255 states and 375 transitions. [2021-08-27 15:57:42,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 255 [2021-08-27 15:57:42,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 255 [2021-08-27 15:57:42,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 255 states and 375 transitions. [2021-08-27 15:57:42,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:42,362 INFO L681 BuchiCegarLoop]: Abstraction has 255 states and 375 transitions. [2021-08-27 15:57:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states and 375 transitions. [2021-08-27 15:57:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 150. [2021-08-27 15:57:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.46) internal successors, (219), 149 states have internal predecessors, (219), 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) [2021-08-27 15:57:42,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 219 transitions. [2021-08-27 15:57:42,404 INFO L704 BuchiCegarLoop]: Abstraction has 150 states and 219 transitions. [2021-08-27 15:57:42,405 INFO L587 BuchiCegarLoop]: Abstraction has 150 states and 219 transitions. [2021-08-27 15:57:42,405 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:57:42,405 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 219 transitions. [2021-08-27 15:57:42,406 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 104 [2021-08-27 15:57:42,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:42,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:42,408 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:42,408 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:42,408 INFO L791 eck$LassoCheckResult]: Stem: 519#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(21);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(25);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 463#L-1 havoc main_#res;havoc main_#t~ret70, main_~retValue_acc~9, main_~tmp~9;havoc main_~retValue_acc~9;havoc main_~tmp~9; 453#L736 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 454#L744 main_#t~ret70 := valid_product_#res;main_~tmp~9 := main_#t~ret70;havoc main_#t~ret70; 458#L857 assume 0 != main_~tmp~9; 516#L834 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 491#L757-1 [2021-08-27 15:57:42,409 INFO L793 eck$LassoCheckResult]: Loop: 491#L757-1 assume !false; 460#L58 assume test_~splverifierCounter~0 < 4; 461#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 517#L67 assume !(0 != test_~tmp~0); 480#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 502#L77 assume !(0 != test_~tmp___0~0); 503#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 486#L87 assume 0 != test_~tmp___2~0; 452#L93-1 assume !(0 != ~pumpRunning~0); 467#L131 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 468#L189 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 431#L163-1 assume !(0 == ~pumpRunning~0); 432#L138 havoc __utac_acc__Specification1_spec__1_#t~ret68, __utac_acc__Specification1_spec__1_#t~ret69, __utac_acc__Specification1_spec__1_~tmp~8, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~8;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 494#L915 __utac_acc__Specification1_spec__1_#t~ret68 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~8 := __utac_acc__Specification1_spec__1_#t~ret68;havoc __utac_acc__Specification1_spec__1_#t~ret68; 490#L757 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~8); 491#L757-1 [2021-08-27 15:57:42,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:42,411 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:57:42,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:42,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254167787] [2021-08-27 15:57:42,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:42,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:42,461 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:42,499 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:42,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:42,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1961899913, now seen corresponding path program 1 times [2021-08-27 15:57:42,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:42,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749387101] [2021-08-27 15:57:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:42,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:57:42,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:42,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749387101] [2021-08-27 15:57:42,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749387101] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:42,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:42,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:57:42,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548682265] [2021-08-27 15:57:42,516 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:57:42,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:42,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:57:42,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:57:42,518 INFO L87 Difference]: Start difference. First operand 150 states and 219 transitions. cyclomatic complexity: 72 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-08-27 15:57:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:42,582 INFO L93 Difference]: Finished difference Result 189 states and 259 transitions. [2021-08-27 15:57:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:57:42,583 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 259 transitions. [2021-08-27 15:57:42,584 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 134 [2021-08-27 15:57:42,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 189 states and 259 transitions. [2021-08-27 15:57:42,586 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 189 [2021-08-27 15:57:42,586 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 189 [2021-08-27 15:57:42,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 259 transitions. [2021-08-27 15:57:42,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:42,593 INFO L681 BuchiCegarLoop]: Abstraction has 189 states and 259 transitions. [2021-08-27 15:57:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states and 259 transitions. [2021-08-27 15:57:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-08-27 15:57:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 189 states have (on average 1.3703703703703705) internal successors, (259), 188 states have internal predecessors, (259), 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) [2021-08-27 15:57:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 259 transitions. [2021-08-27 15:57:42,600 INFO L704 BuchiCegarLoop]: Abstraction has 189 states and 259 transitions. [2021-08-27 15:57:42,600 INFO L587 BuchiCegarLoop]: Abstraction has 189 states and 259 transitions. [2021-08-27 15:57:42,600 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:57:42,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 259 transitions. [2021-08-27 15:57:42,601 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 134 [2021-08-27 15:57:42,601 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:42,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:42,602 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:42,602 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] [2021-08-27 15:57:42,602 INFO L791 eck$LassoCheckResult]: Stem: 870#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(13);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(110, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(102, #t~string19.base, 2 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 3 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string21.base, #t~string21.offset, 1);call write~init~int(80, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(117, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(109, #t~string21.base, 3 + #t~string21.offset, 1);call write~init~int(112, #t~string21.base, 4 + #t~string21.offset, 1);call write~init~int(58, #t~string21.base, 5 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 6 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string23.base, #t~string23.offset, 1);call write~init~int(110, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(102, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string27.base, #t~string27.offset, 1);call write~init~int(32, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string29.base, #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 1 + #t~string29.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(21);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(25);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(13);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string74.base, #t~string74.offset, 1);call write~init~int(77, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(101, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(116, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(104, #t~string74.base, 4 + #t~string74.offset, 1);call write~init~int(58, #t~string74.base, 5 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 6 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string76.base, #t~string76.offset, 1);call write~init~int(82, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(73, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(84, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 4 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(75, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 809#L-1 havoc main_#res;havoc main_#t~ret70, main_~retValue_acc~9, main_~tmp~9;havoc main_~retValue_acc~9;havoc main_~tmp~9; 799#L736 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 800#L744 main_#t~ret70 := valid_product_#res;main_~tmp~9 := main_#t~ret70;havoc main_#t~ret70; 804#L857 assume 0 != main_~tmp~9; 866#L834 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 839#L757-1 [2021-08-27 15:57:42,603 INFO L793 eck$LassoCheckResult]: Loop: 839#L757-1 assume !false; 806#L58 assume test_~splverifierCounter~0 < 4; 807#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 867#L67 assume !(0 != test_~tmp~0); 827#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 848#L77 assume !(0 != test_~tmp___0~0); 849#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 833#L87 assume 0 != test_~tmp___2~0; 797#L93-1 assume !(0 != ~pumpRunning~0); 813#L131 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret12, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 814#L189 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 776#L163-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret30, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 777#L955-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 765#L960-1 isHighWaterLevel_#t~ret30 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret30;havoc isHighWaterLevel_#t~ret30; 766#L291-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 767#L291-5 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 793#L297-1 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 794#L167-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 780#L138 havoc __utac_acc__Specification1_spec__1_#t~ret68, __utac_acc__Specification1_spec__1_#t~ret69, __utac_acc__Specification1_spec__1_~tmp~8, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~8;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~10;havoc isMethaneLevelCritical_~retValue_acc~10;isMethaneLevelCritical_~retValue_acc~10 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~10; 842#L915 __utac_acc__Specification1_spec__1_#t~ret68 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~8 := __utac_acc__Specification1_spec__1_#t~ret68;havoc __utac_acc__Specification1_spec__1_#t~ret68; 838#L757 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~8); 839#L757-1 [2021-08-27 15:57:42,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:42,603 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:57:42,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:42,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985691207] [2021-08-27 15:57:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:42,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:42,629 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:42,661 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:42,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:42,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2099215595, now seen corresponding path program 1 times [2021-08-27 15:57:42,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:42,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998287911] [2021-08-27 15:57:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:42,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:42,667 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:42,674 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:42,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1643144401, now seen corresponding path program 1 times [2021-08-27 15:57:42,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:42,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173475779] [2021-08-27 15:57:42,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:42,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:42,700 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:42,759 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:24,046 WARN L207 SmtUtils]: Spent 41.05 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 15:59:07,912 WARN L207 SmtUtils]: Spent 21.52 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 15:59:08,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:59:08 BoogieIcfgContainer [2021-08-27 15:59:08,036 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:59:08,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:59:08,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:59:08,038 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:59:08,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:41" (3/4) ... [2021-08-27 15:59:08,040 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:59:08,079 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:59:08,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:59:08,081 INFO L168 Benchmark]: Toolchain (without parser) took 88216.63 ms. Allocated memory was 56.6 MB in the beginning and 104.9 MB in the end (delta: 48.2 MB). Free memory was 34.9 MB in the beginning and 33.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 49.7 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:08,083 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:59:08,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.35 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 33.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:08,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.79 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 29.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:08,085 INFO L168 Benchmark]: Boogie Preprocessor took 57.93 ms. Allocated memory is still 56.6 MB. Free memory was 29.8 MB in the beginning and 27.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:08,085 INFO L168 Benchmark]: RCFGBuilder took 860.35 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 27.2 MB in the beginning and 29.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:08,085 INFO L168 Benchmark]: BuchiAutomizer took 86726.21 ms. Allocated memory was 69.2 MB in the beginning and 104.9 MB in the end (delta: 35.7 MB). Free memory was 29.9 MB in the beginning and 35.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:08,086 INFO L168 Benchmark]: Witness Printer took 44.22 ms. Allocated memory is still 104.9 MB. Free memory was 35.7 MB in the beginning and 33.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:08,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 441.35 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 33.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.79 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 29.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.93 ms. Allocated memory is still 56.6 MB. Free memory was 29.8 MB in the beginning and 27.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 860.35 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 27.2 MB in the beginning and 29.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 86726.21 ms. Allocated memory was 69.2 MB in the beginning and 104.9 MB in the end (delta: 35.7 MB). Free memory was 29.9 MB in the beginning and 35.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. * Witness Printer took 44.22 ms. Allocated memory is still 104.9 MB. Free memory was 35.7 MB in the beginning and 33.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 189 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 86.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 86.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 36.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 105 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 189 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 321 SDtfs, 894 SDslu, 725 SDs, 0 SdLazy, 69 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 203.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 57]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=24954} State at position 1 is {NULL=0, NULL=0, NULL=24959, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e82fa07=56, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26bdcbb6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72699813=0, NULL=24954, NULL=0, NULL=24968, methaneLevelCritical=0, NULL=24973, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@677bb14b=0, retValue_acc=0, tmp___1=0, NULL=24970, NULL=24961, NULL=0, cleanupTimeShifts=4, tmp=0, retValue_acc=0, NULL=24971, NULL=0, NULL=0, waterLevel=1, tmp___0=0, NULL=24965, \result=1, head=0, pumpRunning=0, NULL=24978, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ff21bd0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27878390=0, \result=1, NULL=0, NULL=24977, NULL=0, tmp=0, tmp=1, NULL=0, NULL=0, NULL=24981, NULL=24956, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24e3d1c5=0, head=0, tmp=1, NULL=24974, NULL=24964, NULL=24975, NULL=0, NULL=0, NULL=24967, retValue_acc=0, NULL=24963, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33f1bd67=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2485dc13=0, NULL=0, tmp___0=0, NULL=24980, NULL=0, tmp=0, NULL=24979, tmp___0=0, NULL=24957, NULL=24955, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=24969, \result=0, NULL=24962, NULL=24982, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e80b1ef=0, NULL=24960, retValue_acc=1, tmp___2=56, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=24976, NULL=24972, NULL=24966, NULL=24958} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L505] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L775] int cleanupTimeShifts = 4; [L872] int waterLevel = 1; [L873] int methaneLevelCritical = 0; [L848] int retValue_acc ; [L849] int tmp ; [L740] int retValue_acc ; [L743] retValue_acc = 1 [L744] return (retValue_acc); [L855] tmp = valid_product() [L857] COND TRUE \read(tmp) [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 Loop: [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L952] int retValue_acc ; [L955] COND TRUE waterLevel < 2 [L956] retValue_acc = 1 [L957] return (retValue_acc); [L289] tmp = isHighWaterSensorDry() [L291] COND TRUE \read(tmp) [L292] tmp___0 = 0 [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); [L165] tmp = isHighWaterLevel() [L167] COND FALSE !(\read(tmp)) [L750] int tmp ; [L751] int tmp___0 ; [L911] int retValue_acc ; [L914] retValue_acc = methaneLevelCritical [L915] return (retValue_acc); [L755] tmp = isMethaneLevelCritical() [L757] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:59:08,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...