./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product16.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_spec3_product16.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 09f621cb1974882ea9a195d7c88f0bd8b41755c2 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:08:21,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:08:21,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:08:21,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:08:21,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:08:21,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:08:21,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:08:21,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:08:21,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:08:21,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:08:21,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:08:21,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:08:21,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:08:21,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:08:21,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:08:21,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:08:21,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:08:21,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:08:21,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:08:21,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:08:21,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:08:21,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:08:21,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:08:21,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:08:21,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:08:21,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:08:21,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:08:21,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:08:21,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:08:21,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:08:21,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:08:21,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:08:21,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:08:21,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:08:21,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:08:21,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:08:21,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:08:21,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:08:21,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:08:21,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:08:21,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:08:21,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:08:21,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:08:21,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:08:21,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:08:21,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:08:21,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:08:21,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:08:21,419 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:08:21,419 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:08:21,420 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:08:21,420 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:08:21,421 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:08:21,421 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:08:21,421 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:08:21,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:08:21,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:08:21,421 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:08:21,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:08:21,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:08:21,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:08:21,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:08:21,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:08:21,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:08:21,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:08:21,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:08:21,423 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:08:21,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:08:21,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:08:21,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:08:21,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:08:21,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:08:21,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:08:21,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:08:21,425 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:08:21,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09f621cb1974882ea9a195d7c88f0bd8b41755c2 [2021-08-27 16:08:21,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:08:21,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:08:21,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:08:21,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:08:21,815 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:08:21,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product16.cil.c [2021-08-27 16:08:21,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16be262a5/bc5e8ab13dea4ac7a773a002e73507fa/FLAGd2f5d31db [2021-08-27 16:08:22,418 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:08:22,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product16.cil.c [2021-08-27 16:08:22,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16be262a5/bc5e8ab13dea4ac7a773a002e73507fa/FLAGd2f5d31db [2021-08-27 16:08:22,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16be262a5/bc5e8ab13dea4ac7a773a002e73507fa [2021-08-27 16:08:22,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:08:22,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:08:22,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:08:22,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:08:22,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:08:22,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:08:22" (1/1) ... [2021-08-27 16:08:22,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2115cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:22, skipping insertion in model container [2021-08-27 16:08:22,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:08:22" (1/1) ... [2021-08-27 16:08:22,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:08:22,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:08:23,098 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_spec3_product16.cil.c[1281,1294] [2021-08-27 16:08:23,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:08:23,222 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:08:23,244 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_spec3_product16.cil.c[1281,1294] [2021-08-27 16:08:23,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:08:23,341 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:08:23,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23 WrapperNode [2021-08-27 16:08:23,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:08:23,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:08:23,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:08:23,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:08:23,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:08:23,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:08:23,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:08:23,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:08:23,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:08:23,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:08:23,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:08:23,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:08:23,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (1/1) ... [2021-08-27 16:08:23,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:08:23,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:08:23,506 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 16:08:23,548 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 16:08:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:08:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:08:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:08:23,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:08:24,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:08:24,417 INFO L299 CfgBuilder]: Removed 108 assume(true) statements. [2021-08-27 16:08:24,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:08:24 BoogieIcfgContainer [2021-08-27 16:08:24,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:08:24,419 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:08:24,420 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:08:24,422 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:08:24,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:08:24,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:08:22" (1/3) ... [2021-08-27 16:08:24,424 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@515eeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:08:24, skipping insertion in model container [2021-08-27 16:08:24,424 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:08:24,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:23" (2/3) ... [2021-08-27 16:08:24,424 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@515eeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:08:24, skipping insertion in model container [2021-08-27 16:08:24,424 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:08:24,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:08:24" (3/3) ... [2021-08-27 16:08:24,425 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product16.cil.c [2021-08-27 16:08:24,458 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:08:24,459 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:08:24,459 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:08:24,459 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:08:24,459 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:08:24,459 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:08:24,459 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:08:24,459 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:08:24,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 74 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 73 states have internal predecessors, (111), 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 16:08:24,487 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:08:24,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:24,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:24,493 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:24,494 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:24,494 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:08:24,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 74 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 73 states have internal predecessors, (111), 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 16:08:24,498 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:08:24,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:24,499 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:24,499 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:24,499 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:24,504 INFO L791 eck$LassoCheckResult]: Stem: 58#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 46#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 36#L794true havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 59#L802true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 48#L141true assume 0 != main_~tmp~0; 61#L114true havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 55#L903-1true [2021-08-27 16:08:24,504 INFO L793 eck$LassoCheckResult]: Loop: 55#L903-1true assume !false; 18#L534true assume test_~splverifierCounter~0 < 4; 16#L535true test_~tmp~4 := test_#t~nondet43;havoc test_#t~nondet43; 54#L543true assume !(0 != test_~tmp~4); 27#L543-1true test_~tmp___0~0 := test_#t~nondet44;havoc test_#t~nondet44; 9#L553true assume !(0 != test_~tmp___0~0); 24#L553-1true test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 74#L563true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 69#L571-1true assume !(0 != ~pumpRunning~0); 14#L606true assume !(0 != ~systemActive~0); 45#L613true havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~8;havoc isMethaneLevelCritical_~retValue_acc~8;isMethaneLevelCritical_~retValue_acc~8 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~8; 66#L851-1true __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 7#L897true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 55#L903-1true [2021-08-27 16:08:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:24,509 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:08:24,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:24,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945384837] [2021-08-27 16:08:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:24,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:24,680 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:24,851 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:24,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:24,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1672356225, now seen corresponding path program 1 times [2021-08-27 16:08:24,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:24,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893821271] [2021-08-27 16:08:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:24,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:08:24,936 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 16:08:24,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:08:24,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893821271] [2021-08-27 16:08:24,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893821271] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:08:24,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:08:24,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:08:24,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480262159] [2021-08-27 16:08:24,942 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:08:24,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:08:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:08:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:08:24,958 INFO L87 Difference]: Start difference. First operand has 74 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 73 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16:08:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:08:25,040 INFO L93 Difference]: Finished difference Result 142 states and 198 transitions. [2021-08-27 16:08:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:08:25,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 198 transitions. [2021-08-27 16:08:25,052 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 90 [2021-08-27 16:08:25,056 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 128 states and 183 transitions. [2021-08-27 16:08:25,057 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 128 [2021-08-27 16:08:25,058 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 128 [2021-08-27 16:08:25,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 183 transitions. [2021-08-27 16:08:25,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:08:25,059 INFO L681 BuchiCegarLoop]: Abstraction has 128 states and 183 transitions. [2021-08-27 16:08:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 183 transitions. [2021-08-27 16:08:25,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-08-27 16:08:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.4285714285714286) internal successors, (180), 125 states have internal predecessors, (180), 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 16:08:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 180 transitions. [2021-08-27 16:08:25,096 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 180 transitions. [2021-08-27 16:08:25,096 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 180 transitions. [2021-08-27 16:08:25,096 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:08:25,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 180 transitions. [2021-08-27 16:08:25,098 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 88 [2021-08-27 16:08:25,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:25,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:25,099 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:25,099 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:25,100 INFO L791 eck$LassoCheckResult]: Stem: 294#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 284#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 278#L794 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 279#L802 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 286#L141 assume 0 != main_~tmp~0; 287#L114 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 232#L903-1 [2021-08-27 16:08:25,101 INFO L793 eck$LassoCheckResult]: Loop: 232#L903-1 assume !false; 292#L534 assume test_~splverifierCounter~0 < 4; 305#L535 test_~tmp~4 := test_#t~nondet43;havoc test_#t~nondet43; 326#L543 assume !(0 != test_~tmp~4); 324#L543-1 test_~tmp___0~0 := test_#t~nondet44;havoc test_#t~nondet44; 323#L553 assume !(0 != test_~tmp___0~0); 321#L553-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 320#L563 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 299#L571-1 assume !(0 != ~pumpRunning~0); 317#L606 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 314#L638 assume !(0 != ~pumpRunning~0); 312#L613 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~8;havoc isMethaneLevelCritical_~retValue_acc~8;isMethaneLevelCritical_~retValue_acc~8 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~8; 298#L851-1 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 231#L897 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 232#L903-1 [2021-08-27 16:08:25,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:25,102 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:08:25,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:25,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546846020] [2021-08-27 16:08:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:25,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:25,171 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:25,270 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:25,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:25,272 INFO L82 PathProgramCache]: Analyzing trace with hash -323963314, now seen corresponding path program 1 times [2021-08-27 16:08:25,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:25,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003411485] [2021-08-27 16:08:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:25,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:25,280 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:25,288 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:25,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1279076212, now seen corresponding path program 1 times [2021-08-27 16:08:25,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:25,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146004660] [2021-08-27 16:08:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:25,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:08:25,379 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 16:08:25,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:08:25,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146004660] [2021-08-27 16:08:25,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146004660] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:08:25,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:08:25,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:08:25,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948771878] [2021-08-27 16:08:25,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:08:25,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:08:25,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:08:25,670 INFO L87 Difference]: Start difference. First operand 126 states and 180 transitions. cyclomatic complexity: 57 Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 16:08:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:08:25,920 INFO L93 Difference]: Finished difference Result 410 states and 598 transitions. [2021-08-27 16:08:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:08:25,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 410 states and 598 transitions. [2021-08-27 16:08:25,927 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 302 [2021-08-27 16:08:25,933 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 410 states to 410 states and 598 transitions. [2021-08-27 16:08:25,933 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 410 [2021-08-27 16:08:25,935 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 410 [2021-08-27 16:08:25,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 598 transitions. [2021-08-27 16:08:25,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:08:25,941 INFO L681 BuchiCegarLoop]: Abstraction has 410 states and 598 transitions. [2021-08-27 16:08:25,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 598 transitions. [2021-08-27 16:08:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 246. [2021-08-27 16:08:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 246 states have (on average 1.4065040650406504) internal successors, (346), 245 states have internal predecessors, (346), 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 16:08:25,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 346 transitions. [2021-08-27 16:08:25,962 INFO L704 BuchiCegarLoop]: Abstraction has 246 states and 346 transitions. [2021-08-27 16:08:25,962 INFO L587 BuchiCegarLoop]: Abstraction has 246 states and 346 transitions. [2021-08-27 16:08:25,962 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:08:25,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 246 states and 346 transitions. [2021-08-27 16:08:25,964 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 176 [2021-08-27 16:08:25,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:25,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:25,965 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:25,965 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:25,965 INFO L791 eck$LassoCheckResult]: Stem: 860#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 847#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 832#L794 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 833#L802 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 849#L141 assume 0 != main_~tmp~0; 850#L114 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 862#L903-1 [2021-08-27 16:08:25,965 INFO L793 eck$LassoCheckResult]: Loop: 862#L903-1 assume !false; 807#L534 assume test_~splverifierCounter~0 < 4; 803#L535 test_~tmp~4 := test_#t~nondet43;havoc test_#t~nondet43; 804#L543 assume !(0 != test_~tmp~4); 821#L543-1 test_~tmp___0~0 := test_#t~nondet44;havoc test_#t~nondet44; 791#L553 assume !(0 != test_~tmp___0~0); 792#L553-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 964#L563 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 872#L571-1 assume !(0 != ~pumpRunning~0); 800#L606 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 801#L638 assume !(0 != ~pumpRunning~0); 836#L613 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~8;havoc isMethaneLevelCritical_~retValue_acc~8;isMethaneLevelCritical_~retValue_acc~8 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~8; 868#L851-1 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 869#L897 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 841#L883 __utac_acc__Specification3_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~1 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 842#L903 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~1); 862#L903-1 [2021-08-27 16:08:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:08:25,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:25,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620625585] [2021-08-27 16:08:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:25,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:26,012 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:26,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:26,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2091093440, now seen corresponding path program 1 times [2021-08-27 16:08:26,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:26,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895667828] [2021-08-27 16:08:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:26,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:26,071 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:26,078 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:26,079 INFO L82 PathProgramCache]: Analyzing trace with hash 831599078, now seen corresponding path program 1 times [2021-08-27 16:08:26,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:26,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794297555] [2021-08-27 16:08:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:26,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:26,125 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:26,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:26,165 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:09:06,684 WARN L207 SmtUtils]: Spent 40.33 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:09:49,299 WARN L207 SmtUtils]: Spent 20.00 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:09:49,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:09:49 BoogieIcfgContainer [2021-08-27 16:09:49,418 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:09:49,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:09:49,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:09:49,419 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:09:49,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:08:24" (3/4) ... [2021-08-27 16:09:49,421 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:09:49,461 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:09:49,461 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:09:49,463 INFO L168 Benchmark]: Toolchain (without parser) took 86571.65 ms. Allocated memory was 58.7 MB in the beginning and 113.2 MB in the end (delta: 54.5 MB). Free memory was 38.6 MB in the beginning and 25.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 67.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:49,463 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:09:49,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.67 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 34.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:49,464 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.09 ms. Allocated memory is still 58.7 MB. Free memory was 33.8 MB in the beginning and 30.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:49,464 INFO L168 Benchmark]: Boogie Preprocessor took 48.68 ms. Allocated memory is still 58.7 MB. Free memory was 30.9 MB in the beginning and 28.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:49,464 INFO L168 Benchmark]: RCFGBuilder took 939.94 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 28.8 MB in the beginning and 52.9 MB in the end (delta: -24.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:49,466 INFO L168 Benchmark]: BuchiAutomizer took 84998.86 ms. Allocated memory was 73.4 MB in the beginning and 113.2 MB in the end (delta: 39.8 MB). Free memory was 52.9 MB in the beginning and 28.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 76.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:49,467 INFO L168 Benchmark]: Witness Printer took 42.57 ms. Allocated memory is still 113.2 MB. Free memory was 28.3 MB in the beginning and 25.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:49,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 450.67 ms. Allocated memory is still 58.7 MB. Free memory was 38.5 MB in the beginning and 34.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.09 ms. Allocated memory is still 58.7 MB. Free memory was 33.8 MB in the beginning and 30.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.68 ms. Allocated memory is still 58.7 MB. Free memory was 30.9 MB in the beginning and 28.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 939.94 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 28.8 MB in the beginning and 52.9 MB in the end (delta: -24.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84998.86 ms. Allocated memory was 73.4 MB in the beginning and 113.2 MB in the end (delta: 39.8 MB). Free memory was 52.9 MB in the beginning and 28.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 76.2 MB. Max. memory is 16.1 GB. * Witness Printer took 42.57 ms. Allocated memory is still 113.2 MB. Free memory was 28.3 MB in the beginning and 25.3 MB in the end (delta: 3.0 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 5 locations. The remainder module has 246 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.9s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 84.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 44.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 166 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 246 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 224 SDtfs, 432 SDslu, 448 SDs, 0 SdLazy, 89 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 142.2ms 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: 533]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3646} State at position 1 is {NULL=0, NULL=3650, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46416ff7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26f4d9b3=0, NULL=3646, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f22474d=0, NULL=0, NULL=3668, NULL=3649, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11cade8a=78, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a2bfe1a=0, NULL=3655, methaneLevelCritical=0, NULL=3647, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10f807f=0, NULL=0, tmp=0, NULL=0, NULL=3672, tmp___1=0, NULL=3674, NULL=0, NULL=0, NULL=3670, NULL=3648, NULL=3669, cleanupTimeShifts=4, NULL=3657, NULL=3656, tmp___0=1, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4dbd2e00=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@267b260a=0, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=3659, \result=1, head=0, pumpRunning=0, tmp=1, NULL=3651, \result=0, NULL=3658, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c35167c=0, NULL=0, NULL=3673, NULL=3661, retValue_acc=1, NULL=0, NULL=0, retValue_acc=1, NULL=3660, NULL=0, tmp___2=78, NULL=3663, NULL=3666, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=3667, NULL=3664, NULL=3665, NULL=3653, tmp___1=0, head=0, NULL=0, NULL=0, tmp=0, NULL=3662, NULL=0, NULL=0, NULL=0, NULL=3652, NULL=3654, NULL=3671} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L51] int cleanupTimeShifts = 4; [L324] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L598] int pumpRunning = 0; [L599] int systemActive = 1; [L808] int waterLevel = 1; [L809] int methaneLevelCritical = 0; [L132] int retValue_acc ; [L133] int tmp ; [L798] int retValue_acc ; [L801] retValue_acc = 1 [L802] return (retValue_acc); [L139] tmp = valid_product() [L141] COND TRUE \read(tmp) [L524] int splverifierCounter ; [L525] int tmp ; [L526] int tmp___0 ; [L527] int tmp___1 ; [L528] int tmp___2 ; [L531] splverifierCounter = 0 Loop: [L533] COND TRUE 1 [L535] COND TRUE splverifierCounter < 4 [L541] tmp = __VERIFIER_nondet_int() [L543] COND FALSE !(\read(tmp)) [L551] tmp___0 = __VERIFIER_nondet_int() [L553] COND FALSE !(\read(tmp___0)) [L561] tmp___2 = __VERIFIER_nondet_int() [L563] COND TRUE \read(tmp___2) [L767] systemActive = 1 [L606] COND FALSE !(\read(pumpRunning)) [L613] COND TRUE \read(systemActive) [L635] int tmp ; [L638] COND FALSE !(\read(pumpRunning)) [L889] int tmp ; [L890] int tmp___0 ; [L891] int tmp___1 ; [L847] int retValue_acc ; [L850] retValue_acc = methaneLevelCritical [L851] return (retValue_acc); [L895] tmp = isMethaneLevelCritical() [L897] COND FALSE !(\read(tmp)) [L879] int retValue_acc ; [L882] retValue_acc = waterLevel [L883] return (retValue_acc); [L901] tmp___0 = getWaterLevel() [L903] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:09:49,518 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...