./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product52.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 e4fc698cb41b54b4c4983dda7de32b2f9c78701d9e96fbbf9a36472a5bdbde25 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 04:18:03,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 04:18:03,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 04:18:03,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 04:18:03,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 04:18:03,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 04:18:03,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 04:18:03,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 04:18:03,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 04:18:03,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 04:18:03,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 04:18:03,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 04:18:03,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 04:18:03,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 04:18:03,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 04:18:03,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 04:18:03,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 04:18:03,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 04:18:03,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 04:18:03,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 04:18:03,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 04:18:03,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 04:18:03,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 04:18:03,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 04:18:03,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 04:18:03,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 04:18:03,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 04:18:03,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 04:18:03,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 04:18:03,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 04:18:03,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 04:18:03,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 04:18:03,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 04:18:03,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 04:18:03,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 04:18:03,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 04:18:03,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 04:18:03,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 04:18:03,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 04:18:03,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 04:18:03,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 04:18:03,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-02-21 04:18:03,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 04:18:03,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 04:18:03,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 04:18:03,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 04:18:03,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 04:18:03,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 04:18:03,363 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 04:18:03,363 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 04:18:03,363 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 04:18:03,363 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 04:18:03,364 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 04:18:03,364 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 04:18:03,364 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 04:18:03,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 04:18:03,364 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-21 04:18:03,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 04:18:03,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 04:18:03,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-21 04:18:03,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 04:18:03,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 04:18:03,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 04:18:03,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 04:18:03,366 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-21 04:18:03,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 04:18:03,366 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 04:18:03,366 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 04:18:03,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 04:18:03,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 04:18:03,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 04:18:03,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 04:18:03,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 04:18:03,368 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 04:18:03,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4fc698cb41b54b4c4983dda7de32b2f9c78701d9e96fbbf9a36472a5bdbde25 [2022-02-21 04:18:03,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 04:18:03,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 04:18:03,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 04:18:03,562 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 04:18:03,563 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 04:18:03,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c [2022-02-21 04:18:03,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f9726a8/179518e1457f4dd18824bf4371b5170f/FLAG7dd599b40 [2022-02-21 04:18:03,986 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 04:18:03,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c [2022-02-21 04:18:04,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f9726a8/179518e1457f4dd18824bf4371b5170f/FLAG7dd599b40 [2022-02-21 04:18:04,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f9726a8/179518e1457f4dd18824bf4371b5170f [2022-02-21 04:18:04,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 04:18:04,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 04:18:04,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 04:18:04,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 04:18:04,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 04:18:04,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46d036cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04, skipping insertion in model container [2022-02-21 04:18:04,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 04:18:04,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 04:18:04,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c[18431,18444] [2022-02-21 04:18:04,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 04:18:04,707 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 04:18:04,778 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product52.cil.c[18431,18444] [2022-02-21 04:18:04,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 04:18:04,798 INFO L208 MainTranslator]: Completed translation [2022-02-21 04:18:04,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04 WrapperNode [2022-02-21 04:18:04,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 04:18:04,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 04:18:04,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 04:18:04,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 04:18:04,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,869 INFO L137 Inliner]: procedures = 57, calls = 157, calls flagged for inlining = 54, calls inlined = 80, statements flattened = 609 [2022-02-21 04:18:04,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 04:18:04,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 04:18:04,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 04:18:04,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 04:18:04,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 04:18:04,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 04:18:04,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 04:18:04,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 04:18:04,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (1/1) ... [2022-02-21 04:18:04,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 04:18:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 04:18:04,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-02-21 04:18:04,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-02-21 04:18:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-21 04:18:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-21 04:18:04,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 04:18:04,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 04:18:05,034 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 04:18:05,037 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 04:18:05,417 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 04:18:05,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 04:18:05,427 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-21 04:18:05,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:18:05 BoogieIcfgContainer [2022-02-21 04:18:05,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 04:18:05,431 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 04:18:05,431 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 04:18:05,433 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 04:18:05,434 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:18:05,434 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 04:18:04" (1/3) ... [2022-02-21 04:18:05,435 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f8a009b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 04:18:05, skipping insertion in model container [2022-02-21 04:18:05,435 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:18:05,435 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:18:04" (2/3) ... [2022-02-21 04:18:05,436 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f8a009b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 04:18:05, skipping insertion in model container [2022-02-21 04:18:05,436 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:18:05,436 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:18:05" (3/3) ... [2022-02-21 04:18:05,437 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2022-02-21 04:18:05,466 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 04:18:05,466 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 04:18:05,466 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 04:18:05,466 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 04:18:05,466 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 04:18:05,467 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 04:18:05,467 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 04:18:05,467 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 04:18:05,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 167 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 166 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:05,544 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 109 [2022-02-21 04:18:05,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:18:05,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:18:05,552 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:05,552 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:05,552 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 04:18:05,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 167 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 166 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:05,566 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 109 [2022-02-21 04:18:05,566 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:18:05,566 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:18:05,567 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:05,567 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:05,570 INFO L791 eck$LassoCheckResult]: Stem: 148#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 47#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret49#1, main_~retValue_acc~11#1, main_~tmp~8#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~8#1;assume { :begin_inline_select_helpers } true; 156#L946true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 167#L939true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 160#L954true main_#t~ret49#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~8#1 := main_#t~ret49#1;havoc main_#t~ret49#1; 21#L910true assume 0 != main_~tmp~8#1;assume { :begin_inline_setup } true; 29#L884true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 137#L400-2true [2022-02-21 04:18:05,571 INFO L793 eck$LassoCheckResult]: Loop: 137#L400-2true assume !false; 12#L401true assume test_~splverifierCounter~0#1 < 4; 110#L402true test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 125#L410true assume !(0 != test_~tmp~4#1); 4#L410-2true test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 44#L420true assume !(0 != test_~tmp___0~2#1); 8#L420-2true test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 22#L430true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 20#L385true assume { :end_inline_startSystem } true; 129#L438-2true assume { :begin_inline_timeShift } true; 51#L176true assume !(0 != ~pumpRunning~0); 159#L176-2true assume !(0 != ~systemActive~0); 113#L183-1true assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret51#1, __utac_acc__Specification4_spec__1_#t~ret52#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 140#L133true __utac_acc__Specification4_spec__1_#t~ret51#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret51#1;havoc __utac_acc__Specification4_spec__1_#t~ret51#1; 36#L976true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); 39#L976-1true assume { :end_inline___utac_acc__Specification4_spec__1 } true; 68#L193true assume { :end_inline_timeShift } true; 137#L400-2true [2022-02-21 04:18:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:18:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2022-02-21 04:18:05,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:18:05,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971729971] [2022-02-21 04:18:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:18:05,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:18:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:05,699 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:18:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:05,741 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:18:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:18:05,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1941962015, now seen corresponding path program 1 times [2022-02-21 04:18:05,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:18:05,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930151624] [2022-02-21 04:18:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:18:05,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:18:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:18:05,823 INFO L290 TraceCheckUtils]: 0: Hoare triple {173#true} assume !false; {173#true} is VALID [2022-02-21 04:18:05,823 INFO L290 TraceCheckUtils]: 1: Hoare triple {173#true} assume test_~splverifierCounter~0#1 < 4; {173#true} is VALID [2022-02-21 04:18:05,823 INFO L290 TraceCheckUtils]: 2: Hoare triple {173#true} test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; {173#true} is VALID [2022-02-21 04:18:05,823 INFO L290 TraceCheckUtils]: 3: Hoare triple {173#true} assume !(0 != test_~tmp~4#1); {173#true} is VALID [2022-02-21 04:18:05,824 INFO L290 TraceCheckUtils]: 4: Hoare triple {173#true} test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; {173#true} is VALID [2022-02-21 04:18:05,824 INFO L290 TraceCheckUtils]: 5: Hoare triple {173#true} assume !(0 != test_~tmp___0~2#1); {173#true} is VALID [2022-02-21 04:18:05,824 INFO L290 TraceCheckUtils]: 6: Hoare triple {173#true} test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; {173#true} is VALID [2022-02-21 04:18:05,825 INFO L290 TraceCheckUtils]: 7: Hoare triple {173#true} assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; {175#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:18:05,826 INFO L290 TraceCheckUtils]: 8: Hoare triple {175#(<= 1 ~systemActive~0)} assume { :end_inline_startSystem } true; {175#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:18:05,826 INFO L290 TraceCheckUtils]: 9: Hoare triple {175#(<= 1 ~systemActive~0)} assume { :begin_inline_timeShift } true; {175#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:18:05,827 INFO L290 TraceCheckUtils]: 10: Hoare triple {175#(<= 1 ~systemActive~0)} assume !(0 != ~pumpRunning~0); {175#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:18:05,827 INFO L290 TraceCheckUtils]: 11: Hoare triple {175#(<= 1 ~systemActive~0)} assume !(0 != ~systemActive~0); {174#false} is VALID [2022-02-21 04:18:05,827 INFO L290 TraceCheckUtils]: 12: Hoare triple {174#false} assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret51#1, __utac_acc__Specification4_spec__1_#t~ret52#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; {174#false} is VALID [2022-02-21 04:18:05,828 INFO L290 TraceCheckUtils]: 13: Hoare triple {174#false} __utac_acc__Specification4_spec__1_#t~ret51#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret51#1;havoc __utac_acc__Specification4_spec__1_#t~ret51#1; {174#false} is VALID [2022-02-21 04:18:05,828 INFO L290 TraceCheckUtils]: 14: Hoare triple {174#false} assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); {174#false} is VALID [2022-02-21 04:18:05,828 INFO L290 TraceCheckUtils]: 15: Hoare triple {174#false} assume { :end_inline___utac_acc__Specification4_spec__1 } true; {174#false} is VALID [2022-02-21 04:18:05,828 INFO L290 TraceCheckUtils]: 16: Hoare triple {174#false} assume { :end_inline_timeShift } true; {174#false} is VALID [2022-02-21 04:18:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:18:05,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:18:05,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930151624] [2022-02-21 04:18:05,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930151624] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:18:05,830 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:18:05,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 04:18:05,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719907713] [2022-02-21 04:18:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:18:05,835 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:18:05,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:18:05,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 04:18:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 04:18:05,862 INFO L87 Difference]: Start difference. First operand has 167 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 166 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:18:06,150 INFO L93 Difference]: Finished difference Result 319 states and 423 transitions. [2022-02-21 04:18:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 04:18:06,167 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,179 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:18:06,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 319 states and 423 transitions. [2022-02-21 04:18:06,194 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 208 [2022-02-21 04:18:06,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 319 states to 299 states and 402 transitions. [2022-02-21 04:18:06,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 299 [2022-02-21 04:18:06,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 299 [2022-02-21 04:18:06,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 402 transitions. [2022-02-21 04:18:06,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:18:06,207 INFO L681 BuchiCegarLoop]: Abstraction has 299 states and 402 transitions. [2022-02-21 04:18:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states and 402 transitions. [2022-02-21 04:18:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2022-02-21 04:18:06,231 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:18:06,233 INFO L82 GeneralOperation]: Start isEquivalent. First operand 299 states and 402 transitions. Second operand has 296 states, 296 states have (on average 1.3445945945945945) internal successors, (398), 295 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,234 INFO L74 IsIncluded]: Start isIncluded. First operand 299 states and 402 transitions. Second operand has 296 states, 296 states have (on average 1.3445945945945945) internal successors, (398), 295 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,235 INFO L87 Difference]: Start difference. First operand 299 states and 402 transitions. Second operand has 296 states, 296 states have (on average 1.3445945945945945) internal successors, (398), 295 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:18:06,251 INFO L93 Difference]: Finished difference Result 299 states and 402 transitions. [2022-02-21 04:18:06,251 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 402 transitions. [2022-02-21 04:18:06,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:18:06,258 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:18:06,259 INFO L74 IsIncluded]: Start isIncluded. First operand has 296 states, 296 states have (on average 1.3445945945945945) internal successors, (398), 295 states have internal predecessors, (398), 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 299 states and 402 transitions. [2022-02-21 04:18:06,260 INFO L87 Difference]: Start difference. First operand has 296 states, 296 states have (on average 1.3445945945945945) internal successors, (398), 295 states have internal predecessors, (398), 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 299 states and 402 transitions. [2022-02-21 04:18:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:18:06,268 INFO L93 Difference]: Finished difference Result 299 states and 402 transitions. [2022-02-21 04:18:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 402 transitions. [2022-02-21 04:18:06,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:18:06,268 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:18:06,268 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:18:06,269 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:18:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 296 states have (on average 1.3445945945945945) internal successors, (398), 295 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 398 transitions. [2022-02-21 04:18:06,280 INFO L704 BuchiCegarLoop]: Abstraction has 296 states and 398 transitions. [2022-02-21 04:18:06,280 INFO L587 BuchiCegarLoop]: Abstraction has 296 states and 398 transitions. [2022-02-21 04:18:06,280 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2022-02-21 04:18:06,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 296 states and 398 transitions. [2022-02-21 04:18:06,282 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 205 [2022-02-21 04:18:06,282 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:18:06,282 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:18:06,283 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:06,284 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:06,284 INFO L791 eck$LassoCheckResult]: Stem: 660#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 570#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret49#1, main_~retValue_acc~11#1, main_~tmp~8#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~8#1;assume { :begin_inline_select_helpers } true; 571#L946 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 665#L939 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 668#L954 main_#t~ret49#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~8#1 := main_#t~ret49#1;havoc main_#t~ret49#1; 527#L910 assume 0 != main_~tmp~8#1;assume { :begin_inline_setup } true; 528#L884 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 541#L400-2 [2022-02-21 04:18:06,284 INFO L793 eck$LassoCheckResult]: Loop: 541#L400-2 assume !false; 718#L401 assume test_~splverifierCounter~0#1 < 4; 719#L402 test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 786#L410 assume !(0 != test_~tmp~4#1); 677#L410-2 test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 675#L420 assume !(0 != test_~tmp___0~2#1); 673#L420-2 test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 672#L430 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 643#L438 assume !(0 != test_~tmp___1~0#1); 526#L438-2 assume { :begin_inline_timeShift } true; 670#L176 assume !(0 != ~pumpRunning~0); 666#L176-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 667#L234 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 741#L208-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 747#L200-3 assume { :end_inline_processEnvironment__wrappee__base } true; 728#L208-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 727#L234-1 assume { :end_inline_processEnvironment } true; 726#L183-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret51#1, __utac_acc__Specification4_spec__1_#t~ret52#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 725#L133 __utac_acc__Specification4_spec__1_#t~ret51#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret51#1;havoc __utac_acc__Specification4_spec__1_#t~ret51#1; 722#L976 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); 721#L976-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 720#L193 assume { :end_inline_timeShift } true; 541#L400-2 [2022-02-21 04:18:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:18:06,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2022-02-21 04:18:06,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:18:06,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482132805] [2022-02-21 04:18:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:18:06,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:18:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:06,298 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:18:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:06,313 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:18:06,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:18:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2056867099, now seen corresponding path program 1 times [2022-02-21 04:18:06,314 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:18:06,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648494902] [2022-02-21 04:18:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:18:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:18:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:18:06,336 INFO L290 TraceCheckUtils]: 0: Hoare triple {1394#true} assume !false; {1394#true} is VALID [2022-02-21 04:18:06,336 INFO L290 TraceCheckUtils]: 1: Hoare triple {1394#true} assume test_~splverifierCounter~0#1 < 4; {1394#true} is VALID [2022-02-21 04:18:06,336 INFO L290 TraceCheckUtils]: 2: Hoare triple {1394#true} test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; {1394#true} is VALID [2022-02-21 04:18:06,336 INFO L290 TraceCheckUtils]: 3: Hoare triple {1394#true} assume !(0 != test_~tmp~4#1); {1394#true} is VALID [2022-02-21 04:18:06,336 INFO L290 TraceCheckUtils]: 4: Hoare triple {1394#true} test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; {1394#true} is VALID [2022-02-21 04:18:06,336 INFO L290 TraceCheckUtils]: 5: Hoare triple {1394#true} assume !(0 != test_~tmp___0~2#1); {1394#true} is VALID [2022-02-21 04:18:06,337 INFO L290 TraceCheckUtils]: 6: Hoare triple {1394#true} test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; {1394#true} is VALID [2022-02-21 04:18:06,337 INFO L290 TraceCheckUtils]: 7: Hoare triple {1394#true} assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; {1394#true} is VALID [2022-02-21 04:18:06,337 INFO L290 TraceCheckUtils]: 8: Hoare triple {1394#true} assume !(0 != test_~tmp___1~0#1); {1394#true} is VALID [2022-02-21 04:18:06,338 INFO L290 TraceCheckUtils]: 9: Hoare triple {1394#true} assume { :begin_inline_timeShift } true; {1394#true} is VALID [2022-02-21 04:18:06,338 INFO L290 TraceCheckUtils]: 10: Hoare triple {1394#true} assume !(0 != ~pumpRunning~0); {1396#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:18:06,338 INFO L290 TraceCheckUtils]: 11: Hoare triple {1396#(= ~pumpRunning~0 0)} assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; {1396#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:18:06,339 INFO L290 TraceCheckUtils]: 12: Hoare triple {1396#(= ~pumpRunning~0 0)} assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; {1396#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:18:06,339 INFO L290 TraceCheckUtils]: 13: Hoare triple {1396#(= ~pumpRunning~0 0)} assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; {1395#false} is VALID [2022-02-21 04:18:06,339 INFO L290 TraceCheckUtils]: 14: Hoare triple {1395#false} assume { :end_inline_processEnvironment__wrappee__base } true; {1395#false} is VALID [2022-02-21 04:18:06,339 INFO L290 TraceCheckUtils]: 15: Hoare triple {1395#false} assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; {1395#false} is VALID [2022-02-21 04:18:06,339 INFO L290 TraceCheckUtils]: 16: Hoare triple {1395#false} assume { :end_inline_processEnvironment } true; {1395#false} is VALID [2022-02-21 04:18:06,340 INFO L290 TraceCheckUtils]: 17: Hoare triple {1395#false} assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret51#1, __utac_acc__Specification4_spec__1_#t~ret52#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; {1395#false} is VALID [2022-02-21 04:18:06,340 INFO L290 TraceCheckUtils]: 18: Hoare triple {1395#false} __utac_acc__Specification4_spec__1_#t~ret51#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret51#1;havoc __utac_acc__Specification4_spec__1_#t~ret51#1; {1395#false} is VALID [2022-02-21 04:18:06,340 INFO L290 TraceCheckUtils]: 19: Hoare triple {1395#false} assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); {1395#false} is VALID [2022-02-21 04:18:06,340 INFO L290 TraceCheckUtils]: 20: Hoare triple {1395#false} assume { :end_inline___utac_acc__Specification4_spec__1 } true; {1395#false} is VALID [2022-02-21 04:18:06,340 INFO L290 TraceCheckUtils]: 21: Hoare triple {1395#false} assume { :end_inline_timeShift } true; {1395#false} is VALID [2022-02-21 04:18:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:18:06,340 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:18:06,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648494902] [2022-02-21 04:18:06,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648494902] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:18:06,341 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:18:06,341 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 04:18:06,341 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622606895] [2022-02-21 04:18:06,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:18:06,342 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:18:06,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:18:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 04:18:06,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 04:18:06,343 INFO L87 Difference]: Start difference. First operand 296 states and 398 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:18:06,545 INFO L93 Difference]: Finished difference Result 408 states and 527 transitions. [2022-02-21 04:18:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 04:18:06,545 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,560 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:18:06,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 408 states and 527 transitions. [2022-02-21 04:18:06,573 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2022-02-21 04:18:06,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 408 states to 408 states and 527 transitions. [2022-02-21 04:18:06,584 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 408 [2022-02-21 04:18:06,584 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 408 [2022-02-21 04:18:06,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 408 states and 527 transitions. [2022-02-21 04:18:06,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:18:06,585 INFO L681 BuchiCegarLoop]: Abstraction has 408 states and 527 transitions. [2022-02-21 04:18:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states and 527 transitions. [2022-02-21 04:18:06,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2022-02-21 04:18:06,593 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:18:06,593 INFO L82 GeneralOperation]: Start isEquivalent. First operand 408 states and 527 transitions. Second operand has 408 states, 408 states have (on average 1.2916666666666667) internal successors, (527), 407 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,594 INFO L74 IsIncluded]: Start isIncluded. First operand 408 states and 527 transitions. Second operand has 408 states, 408 states have (on average 1.2916666666666667) internal successors, (527), 407 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,595 INFO L87 Difference]: Start difference. First operand 408 states and 527 transitions. Second operand has 408 states, 408 states have (on average 1.2916666666666667) internal successors, (527), 407 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:18:06,605 INFO L93 Difference]: Finished difference Result 408 states and 527 transitions. [2022-02-21 04:18:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 527 transitions. [2022-02-21 04:18:06,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:18:06,605 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:18:06,606 INFO L74 IsIncluded]: Start isIncluded. First operand has 408 states, 408 states have (on average 1.2916666666666667) internal successors, (527), 407 states have internal predecessors, (527), 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 408 states and 527 transitions. [2022-02-21 04:18:06,607 INFO L87 Difference]: Start difference. First operand has 408 states, 408 states have (on average 1.2916666666666667) internal successors, (527), 407 states have internal predecessors, (527), 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 408 states and 527 transitions. [2022-02-21 04:18:06,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:18:06,617 INFO L93 Difference]: Finished difference Result 408 states and 527 transitions. [2022-02-21 04:18:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 527 transitions. [2022-02-21 04:18:06,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:18:06,618 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:18:06,618 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:18:06,618 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:18:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 408 states have (on average 1.2916666666666667) internal successors, (527), 407 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 527 transitions. [2022-02-21 04:18:06,629 INFO L704 BuchiCegarLoop]: Abstraction has 408 states and 527 transitions. [2022-02-21 04:18:06,629 INFO L587 BuchiCegarLoop]: Abstraction has 408 states and 527 transitions. [2022-02-21 04:18:06,629 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2022-02-21 04:18:06,629 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 408 states and 527 transitions. [2022-02-21 04:18:06,631 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2022-02-21 04:18:06,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:18:06,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:18:06,631 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:06,631 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:06,631 INFO L791 eck$LassoCheckResult]: Stem: 1982#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1879#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret49#1, main_~retValue_acc~11#1, main_~tmp~8#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~8#1;assume { :begin_inline_select_helpers } true; 1880#L946 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1989#L939 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 1993#L954 main_#t~ret49#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~8#1 := main_#t~ret49#1;havoc main_#t~ret49#1; 1834#L910 assume 0 != main_~tmp~8#1;assume { :begin_inline_setup } true; 1835#L884 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1848#L400-2 [2022-02-21 04:18:06,632 INFO L793 eck$LassoCheckResult]: Loop: 1848#L400-2 assume !false; 1817#L401 assume test_~splverifierCounter~0#1 < 4; 1818#L402 test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 1956#L410 assume !(0 != test_~tmp~4#1); 1805#L410-2 test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 1806#L420 assume !(0 != test_~tmp___0~2#1); 1809#L420-2 test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 1810#L430 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 1830#L385 assume { :end_inline_startSystem } true; 1831#L438-2 assume { :begin_inline_timeShift } true; 1969#L176 assume !(0 != ~pumpRunning~0); 1991#L176-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 1992#L234 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 2132#L208-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret20#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 2131#L141-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 2130#L146-1 isHighWaterLevel_#t~ret20#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret20#1;havoc isHighWaterLevel_#t~ret20#1; 2129#L336-3 assume !(0 != isHighWaterLevel_~tmp~2#1);isHighWaterLevel_~tmp___0~0#1 := 1; 2128#L336-5 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 2127#L342-1 processEnvironment__wrappee__highWaterSensor_#t~ret9#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret9#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1; 1949#L212-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1951#L200-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1953#L208-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1898#L234-1 assume { :end_inline_processEnvironment } true; 1959#L183-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret51#1, __utac_acc__Specification4_spec__1_#t~ret52#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 1960#L133 __utac_acc__Specification4_spec__1_#t~ret51#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret51#1;havoc __utac_acc__Specification4_spec__1_#t~ret51#1; 1860#L976 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); 1861#L976-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 1867#L193 assume { :end_inline_timeShift } true; 1848#L400-2 [2022-02-21 04:18:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:18:06,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2022-02-21 04:18:06,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:18:06,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462199879] [2022-02-21 04:18:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:18:06,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:18:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:06,642 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:18:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:06,652 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:18:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:18:06,657 INFO L85 PathProgramCache]: Analyzing trace with hash -489047863, now seen corresponding path program 1 times [2022-02-21 04:18:06,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:18:06,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674902263] [2022-02-21 04:18:06,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:18:06,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:18:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:18:06,700 INFO L290 TraceCheckUtils]: 0: Hoare triple {3034#true} assume !false; {3034#true} is VALID [2022-02-21 04:18:06,703 INFO L290 TraceCheckUtils]: 1: Hoare triple {3034#true} assume test_~splverifierCounter~0#1 < 4; {3034#true} is VALID [2022-02-21 04:18:06,703 INFO L290 TraceCheckUtils]: 2: Hoare triple {3034#true} test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; {3034#true} is VALID [2022-02-21 04:18:06,703 INFO L290 TraceCheckUtils]: 3: Hoare triple {3034#true} assume !(0 != test_~tmp~4#1); {3034#true} is VALID [2022-02-21 04:18:06,704 INFO L290 TraceCheckUtils]: 4: Hoare triple {3034#true} test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; {3034#true} is VALID [2022-02-21 04:18:06,704 INFO L290 TraceCheckUtils]: 5: Hoare triple {3034#true} assume !(0 != test_~tmp___0~2#1); {3034#true} is VALID [2022-02-21 04:18:06,704 INFO L290 TraceCheckUtils]: 6: Hoare triple {3034#true} test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; {3034#true} is VALID [2022-02-21 04:18:06,704 INFO L290 TraceCheckUtils]: 7: Hoare triple {3034#true} assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; {3034#true} is VALID [2022-02-21 04:18:06,704 INFO L290 TraceCheckUtils]: 8: Hoare triple {3034#true} assume { :end_inline_startSystem } true; {3034#true} is VALID [2022-02-21 04:18:06,704 INFO L290 TraceCheckUtils]: 9: Hoare triple {3034#true} assume { :begin_inline_timeShift } true; {3034#true} is VALID [2022-02-21 04:18:06,705 INFO L290 TraceCheckUtils]: 10: Hoare triple {3034#true} assume !(0 != ~pumpRunning~0); {3034#true} is VALID [2022-02-21 04:18:06,707 INFO L290 TraceCheckUtils]: 11: Hoare triple {3034#true} assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; {3034#true} is VALID [2022-02-21 04:18:06,707 INFO L290 TraceCheckUtils]: 12: Hoare triple {3034#true} assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; {3034#true} is VALID [2022-02-21 04:18:06,707 INFO L290 TraceCheckUtils]: 13: Hoare triple {3034#true} assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret20#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; {3034#true} is VALID [2022-02-21 04:18:06,708 INFO L290 TraceCheckUtils]: 14: Hoare triple {3034#true} assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; {3036#(= |ULTIMATE.start_isHighWaterSensorDry_#res#1| 1)} is VALID [2022-02-21 04:18:06,708 INFO L290 TraceCheckUtils]: 15: Hoare triple {3036#(= |ULTIMATE.start_isHighWaterSensorDry_#res#1| 1)} isHighWaterLevel_#t~ret20#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret20#1;havoc isHighWaterLevel_#t~ret20#1; {3037#(= |ULTIMATE.start_isHighWaterLevel_~tmp~2#1| 1)} is VALID [2022-02-21 04:18:06,709 INFO L290 TraceCheckUtils]: 16: Hoare triple {3037#(= |ULTIMATE.start_isHighWaterLevel_~tmp~2#1| 1)} assume !(0 != isHighWaterLevel_~tmp~2#1);isHighWaterLevel_~tmp___0~0#1 := 1; {3035#false} is VALID [2022-02-21 04:18:06,710 INFO L290 TraceCheckUtils]: 17: Hoare triple {3035#false} isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; {3035#false} is VALID [2022-02-21 04:18:06,711 INFO L290 TraceCheckUtils]: 18: Hoare triple {3035#false} processEnvironment__wrappee__highWaterSensor_#t~ret9#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret9#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1; {3035#false} is VALID [2022-02-21 04:18:06,711 INFO L290 TraceCheckUtils]: 19: Hoare triple {3035#false} assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; {3035#false} is VALID [2022-02-21 04:18:06,711 INFO L290 TraceCheckUtils]: 20: Hoare triple {3035#false} assume { :end_inline_processEnvironment__wrappee__base } true; {3035#false} is VALID [2022-02-21 04:18:06,711 INFO L290 TraceCheckUtils]: 21: Hoare triple {3035#false} assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; {3035#false} is VALID [2022-02-21 04:18:06,712 INFO L290 TraceCheckUtils]: 22: Hoare triple {3035#false} assume { :end_inline_processEnvironment } true; {3035#false} is VALID [2022-02-21 04:18:06,712 INFO L290 TraceCheckUtils]: 23: Hoare triple {3035#false} assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret51#1, __utac_acc__Specification4_spec__1_#t~ret52#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; {3035#false} is VALID [2022-02-21 04:18:06,712 INFO L290 TraceCheckUtils]: 24: Hoare triple {3035#false} __utac_acc__Specification4_spec__1_#t~ret51#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret51#1;havoc __utac_acc__Specification4_spec__1_#t~ret51#1; {3035#false} is VALID [2022-02-21 04:18:06,712 INFO L290 TraceCheckUtils]: 25: Hoare triple {3035#false} assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); {3035#false} is VALID [2022-02-21 04:18:06,712 INFO L290 TraceCheckUtils]: 26: Hoare triple {3035#false} assume { :end_inline___utac_acc__Specification4_spec__1 } true; {3035#false} is VALID [2022-02-21 04:18:06,713 INFO L290 TraceCheckUtils]: 27: Hoare triple {3035#false} assume { :end_inline_timeShift } true; {3035#false} is VALID [2022-02-21 04:18:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:18:06,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:18:06,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674902263] [2022-02-21 04:18:06,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674902263] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:18:06,714 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:18:06,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-21 04:18:06,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65545813] [2022-02-21 04:18:06,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:18:06,714 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:18:06,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:18:06,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-21 04:18:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-21 04:18:06,716 INFO L87 Difference]: Start difference. First operand 408 states and 527 transitions. cyclomatic complexity: 122 Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:18:07,162 INFO L93 Difference]: Finished difference Result 797 states and 1011 transitions. [2022-02-21 04:18:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-21 04:18:07,163 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:07,181 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:18:07,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 797 states and 1011 transitions. [2022-02-21 04:18:07,201 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 574 [2022-02-21 04:18:07,220 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 797 states to 797 states and 1011 transitions. [2022-02-21 04:18:07,221 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 797 [2022-02-21 04:18:07,221 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 797 [2022-02-21 04:18:07,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 797 states and 1011 transitions. [2022-02-21 04:18:07,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:18:07,222 INFO L681 BuchiCegarLoop]: Abstraction has 797 states and 1011 transitions. [2022-02-21 04:18:07,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states and 1011 transitions. [2022-02-21 04:18:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 432. [2022-02-21 04:18:07,234 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:18:07,234 INFO L82 GeneralOperation]: Start isEquivalent. First operand 797 states and 1011 transitions. Second operand has 432 states, 432 states have (on average 1.275462962962963) internal successors, (551), 431 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:07,235 INFO L74 IsIncluded]: Start isIncluded. First operand 797 states and 1011 transitions. Second operand has 432 states, 432 states have (on average 1.275462962962963) internal successors, (551), 431 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:07,236 INFO L87 Difference]: Start difference. First operand 797 states and 1011 transitions. Second operand has 432 states, 432 states have (on average 1.275462962962963) internal successors, (551), 431 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:18:07,254 INFO L93 Difference]: Finished difference Result 797 states and 1011 transitions. [2022-02-21 04:18:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1011 transitions. [2022-02-21 04:18:07,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:18:07,255 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:18:07,256 INFO L74 IsIncluded]: Start isIncluded. First operand has 432 states, 432 states have (on average 1.275462962962963) internal successors, (551), 431 states have internal predecessors, (551), 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 797 states and 1011 transitions. [2022-02-21 04:18:07,257 INFO L87 Difference]: Start difference. First operand has 432 states, 432 states have (on average 1.275462962962963) internal successors, (551), 431 states have internal predecessors, (551), 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 797 states and 1011 transitions. [2022-02-21 04:18:07,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:18:07,280 INFO L93 Difference]: Finished difference Result 797 states and 1011 transitions. [2022-02-21 04:18:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1011 transitions. [2022-02-21 04:18:07,281 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:18:07,281 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:18:07,281 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:18:07,282 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:18:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 432 states have (on average 1.275462962962963) internal successors, (551), 431 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-21 04:18:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 551 transitions. [2022-02-21 04:18:07,290 INFO L704 BuchiCegarLoop]: Abstraction has 432 states and 551 transitions. [2022-02-21 04:18:07,290 INFO L587 BuchiCegarLoop]: Abstraction has 432 states and 551 transitions. [2022-02-21 04:18:07,290 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2022-02-21 04:18:07,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 432 states and 551 transitions. [2022-02-21 04:18:07,292 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 307 [2022-02-21 04:18:07,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:18:07,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:18:07,292 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:07,292 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:18:07,293 INFO L791 eck$LassoCheckResult]: Stem: 4027#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 3911#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret49#1, main_~retValue_acc~11#1, main_~tmp~8#1;havoc main_~retValue_acc~11#1;havoc main_~tmp~8#1;assume { :begin_inline_select_helpers } true; 3912#L946 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 4032#L939 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~13#1;havoc valid_product_~retValue_acc~13#1;valid_product_~retValue_acc~13#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~13#1; 4036#L954 main_#t~ret49#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~8#1 := main_#t~ret49#1;havoc main_#t~ret49#1; 3867#L910 assume 0 != main_~tmp~8#1;assume { :begin_inline_setup } true; 3868#L884 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet22#1, test_#t~nondet23#1, test_#t~nondet24#1, test_#t~nondet25#1, test_~splverifierCounter~0#1, test_~tmp~4#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~4#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3881#L400-2 [2022-02-21 04:18:07,293 INFO L793 eck$LassoCheckResult]: Loop: 3881#L400-2 assume !false; 4137#L401 assume test_~splverifierCounter~0#1 < 4; 4136#L402 test_~tmp~4#1 := test_#t~nondet22#1;havoc test_#t~nondet22#1; 4134#L410 assume !(0 != test_~tmp~4#1); 4132#L410-2 test_~tmp___0~2#1 := test_#t~nondet23#1;havoc test_#t~nondet23#1; 4130#L420 assume !(0 != test_~tmp___0~2#1); 4128#L420-2 test_~tmp___2~0#1 := test_#t~nondet24#1;havoc test_#t~nondet24#1; 4127#L430 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 3863#L385 assume { :end_inline_startSystem } true; 3864#L438-2 assume { :begin_inline_timeShift } true; 4125#L176 assume !(0 != ~pumpRunning~0); 4093#L176-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret10#1, processEnvironment_~tmp~1#1;havoc processEnvironment_~tmp~1#1; 3959#L234 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1, processEnvironment__wrappee__highWaterSensor_~tmp~0#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~0#1; 3960#L208-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret20#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~2#1, isHighWaterLevel_~tmp___0~0#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~2#1;havoc isHighWaterLevel_~tmp___0~0#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 4020#L141-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 3874#L146-1 isHighWaterLevel_#t~ret20#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~2#1 := isHighWaterLevel_#t~ret20#1;havoc isHighWaterLevel_#t~ret20#1; 3855#L336-3 assume 0 != isHighWaterLevel_~tmp~2#1;isHighWaterLevel_~tmp___0~0#1 := 0; 3856#L336-5 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~0#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 3853#L342-1 processEnvironment__wrappee__highWaterSensor_#t~ret9#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~0#1 := processEnvironment__wrappee__highWaterSensor_#t~ret9#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret9#1; 3854#L212-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~0#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3985#L200-2 assume { :end_inline_processEnvironment__wrappee__base } true; 3988#L208-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3930#L234-1 assume { :end_inline_processEnvironment } true; 3993#L183-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret51#1, __utac_acc__Specification4_spec__1_#t~ret52#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 3994#L133 __utac_acc__Specification4_spec__1_#t~ret51#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret51#1;havoc __utac_acc__Specification4_spec__1_#t~ret51#1; 4014#L976 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); 4179#L976-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 4139#L193 assume { :end_inline_timeShift } true; 3881#L400-2 [2022-02-21 04:18:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:18:07,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2022-02-21 04:18:07,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:18:07,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637784416] [2022-02-21 04:18:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:18:07,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:18:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:07,302 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:18:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:07,309 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:18:07,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:18:07,310 INFO L85 PathProgramCache]: Analyzing trace with hash -747213301, now seen corresponding path program 1 times [2022-02-21 04:18:07,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:18:07,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314936371] [2022-02-21 04:18:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:18:07,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:18:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:07,316 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:18:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:07,321 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:18:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:18:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1998195249, now seen corresponding path program 1 times [2022-02-21 04:18:07,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:18:07,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397206671] [2022-02-21 04:18:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:18:07,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:18:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:07,332 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:18:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:18:07,363 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:18:09,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 04:18:09 BoogieIcfgContainer [2022-02-21 04:18:09,839 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 04:18:09,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 04:18:09,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 04:18:09,839 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 04:18:09,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:18:05" (3/4) ... [2022-02-21 04:18:09,841 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-02-21 04:18:09,877 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 04:18:09,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 04:18:09,879 INFO L158 Benchmark]: Toolchain (without parser) took 5478.91ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 60.0MB in the beginning and 77.4MB in the end (delta: -17.4MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2022-02-21 04:18:09,879 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 04:18:09,879 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.37ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 59.8MB in the beginning and 86.1MB in the end (delta: -26.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 04:18:09,880 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.30ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 82.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-21 04:18:09,880 INFO L158 Benchmark]: Boogie Preprocessor took 40.14ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 79.4MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-21 04:18:09,880 INFO L158 Benchmark]: RCFGBuilder took 519.52ms. Allocated memory is still 121.6MB. Free memory was 79.4MB in the beginning and 85.8MB in the end (delta: -6.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-02-21 04:18:09,881 INFO L158 Benchmark]: BuchiAutomizer took 4407.71ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 85.8MB in the beginning and 79.5MB in the end (delta: 6.3MB). Peak memory consumption was 76.7MB. Max. memory is 16.1GB. [2022-02-21 04:18:09,881 INFO L158 Benchmark]: Witness Printer took 38.49ms. Allocated memory is still 146.8MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 04:18:09,883 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.37ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 59.8MB in the beginning and 86.1MB in the end (delta: -26.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.30ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 82.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.14ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 79.4MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 519.52ms. Allocated memory is still 121.6MB. Free memory was 79.4MB in the beginning and 85.8MB in the end (delta: -6.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 4407.71ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 85.8MB in the beginning and 79.5MB in the end (delta: 6.3MB). Peak memory consumption was 76.7MB. Max. memory is 16.1GB. * Witness Printer took 38.49ms. Allocated memory is still 146.8MB. Free memory was 79.5MB in the beginning and 77.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 432 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 368 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 432 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 681 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 681 mSDsluCounter, 1322 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 654 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 668 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 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: 400]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@385372dc=0, tmp___0=0, NULL=0, head=0, pumpRunning=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48b182d4=0, NULL=1, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2114562e=0, retValue_acc=1, retValue_acc=1, methaneLevelCritical=0, tmp=1, tmp=1, retValue_acc=0, \result=1, \result=1, tmp=1, tmp___2=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a41b827=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77833ad0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72b406ff=0, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@138488d9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@263652c1=0, \result=0, tmp=0, head=0, \result=1, tmp___1=0, NULL=0, retValue_acc=0, waterLevel=1, systemActive=1, retValue_acc=1, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cee6db8=29, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44d9c07a=0, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 400]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L168] int pumpRunning = 0; [L169] int systemActive = 1; [L628] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L825] int cleanupTimeShifts = 4; [L901] int retValue_acc ; [L902] int tmp ; [L906] FCALL select_helpers() [L907] FCALL select_features() [L908] CALL, EXPR valid_product() [L950] int retValue_acc ; [L953] retValue_acc = 1 [L954] return (retValue_acc); [L908] RET, EXPR valid_product() [L908] tmp = valid_product() [L910] COND TRUE \read(tmp) [L912] FCALL setup() [L913] CALL runTest() [L892] CALL test() [L391] int splverifierCounter ; [L392] int tmp ; [L393] int tmp___0 ; [L394] int tmp___1 ; [L395] int tmp___2 ; [L398] splverifierCounter = 0 Loop: [L400] COND TRUE 1 [L402] COND TRUE splverifierCounter < 4 [L408] tmp = __VERIFIER_nondet_int() [L410] COND FALSE !(\read(tmp)) [L418] tmp___0 = __VERIFIER_nondet_int() [L420] COND FALSE !(\read(tmp___0)) [L428] tmp___2 = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp___2) [L432] CALL startSystem() [L384] systemActive = 1 [L432] RET startSystem() [L447] CALL timeShift() [L176] COND FALSE !(\read(pumpRunning)) [L183] COND TRUE \read(systemActive) [L185] CALL processEnvironment() [L231] int tmp ; [L234] COND FALSE !(\read(pumpRunning)) [L249] CALL processEnvironment__wrappee__highWaterSensor() [L205] int tmp ; [L208] COND TRUE ! pumpRunning [L210] CALL, EXPR isHighWaterLevel() [L328] int retValue_acc ; [L329] int tmp ; [L330] int tmp___0 ; [L334] CALL, EXPR isHighWaterSensorDry() [L138] int retValue_acc ; [L141] COND TRUE waterLevel < 2 [L142] retValue_acc = 1 [L143] return (retValue_acc); [L334] RET, EXPR isHighWaterSensorDry() [L334] tmp = isHighWaterSensorDry() [L336] COND TRUE \read(tmp) [L337] tmp___0 = 0 [L341] retValue_acc = tmp___0 [L342] return (retValue_acc); [L210] RET, EXPR isHighWaterLevel() [L210] tmp = isHighWaterLevel() [L212] COND FALSE !(\read(tmp)) [L218] FCALL processEnvironment__wrappee__base() [L249] RET processEnvironment__wrappee__highWaterSensor() [L185] RET processEnvironment() [L191] CALL __utac_acc__Specification4_spec__1() [L969] int tmp ; [L970] int tmp___0 ; [L974] CALL, EXPR getWaterLevel() [L129] int retValue_acc ; [L132] retValue_acc = waterLevel [L133] return (retValue_acc); [L974] RET, EXPR getWaterLevel() [L974] tmp = getWaterLevel() [L976] COND FALSE !(tmp == 0) [L191] RET __utac_acc__Specification4_spec__1() [L447] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-02-21 04:18:09,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)