./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product47.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 061cfb2472421d3cfe55520924b41b3593b27e2a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:57:21,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:57:21,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:57:21,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:57:21,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:57:21,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:57:21,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:57:21,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:57:21,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:57:21,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:57:21,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:57:21,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:57:21,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:57:21,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:57:21,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:57:21,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:57:21,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:57:21,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:57:21,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:57:21,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:57:21,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:57:21,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:57:21,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:57:21,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:57:21,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:57:21,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:57:21,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:57:21,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:57:21,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:57:21,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:57:21,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:57:21,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:57:21,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:57:21,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:57:21,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:57:21,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:57:21,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:57:21,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:57:21,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:57:21,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:57:21,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:57:21,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:57:21,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:57:21,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:57:21,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:57:21,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:57:21,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:57:21,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:57:21,916 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:57:21,916 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:57:21,916 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:57:21,917 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:57:21,917 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:57:21,917 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:57:21,918 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:57:21,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:57:21,918 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:57:21,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:57:21,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:57:21,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:57:21,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:57:21,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:57:21,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:57:21,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:57:21,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:57:21,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:57:21,929 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:57:21,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:57:21,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:57:21,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:57:21,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:57:21,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:57:21,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:57:21,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:57:21,932 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:57:21,932 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 061cfb2472421d3cfe55520924b41b3593b27e2a [2021-08-27 15:57:22,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:57:22,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:57:22,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:57:22,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:57:22,237 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:57:22,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product47.cil.c [2021-08-27 15:57:22,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8f9f959/83978545c88a47c1877c984c794ca92d/FLAG318f36da9 [2021-08-27 15:57:22,714 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:57:22,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product47.cil.c [2021-08-27 15:57:22,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8f9f959/83978545c88a47c1877c984c794ca92d/FLAG318f36da9 [2021-08-27 15:57:22,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8f9f959/83978545c88a47c1877c984c794ca92d [2021-08-27 15:57:22,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:57:22,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:57:22,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:57:22,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:57:22,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:57:22,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:22" (1/1) ... [2021-08-27 15:57:22,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681beb1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:22, skipping insertion in model container [2021-08-27 15:57:22,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:57:22" (1/1) ... [2021-08-27 15:57:22,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:57:22,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:57:22,963 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product47.cil.c[1720,1733] [2021-08-27 15:57:23,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:57:23,120 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:57:23,139 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product47.cil.c[1720,1733] [2021-08-27 15:57:23,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:57:23,215 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:57:23,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23 WrapperNode [2021-08-27 15:57:23,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:57:23,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:57:23,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:57:23,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:57:23,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:57:23,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:57:23,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:57:23,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:57:23,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:57:23,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:57:23,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:57:23,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:57:23,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (1/1) ... [2021-08-27 15:57:23,367 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:57:23,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:57:23,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:57:23,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 15:57:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:57:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:57:23,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:57:23,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:57:24,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:57:24,113 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-08-27 15:57:24,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:24 BoogieIcfgContainer [2021-08-27 15:57:24,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:57:24,116 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:57:24,116 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:57:24,119 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:57:24,119 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:24,119 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:57:22" (1/3) ... [2021-08-27 15:57:24,120 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d21ad9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:57:24, skipping insertion in model container [2021-08-27 15:57:24,120 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:24,120 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:57:23" (2/3) ... [2021-08-27 15:57:24,121 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d21ad9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:57:24, skipping insertion in model container [2021-08-27 15:57:24,121 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:57:24,121 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:24" (3/3) ... [2021-08-27 15:57:24,122 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product47.cil.c [2021-08-27 15:57:24,152 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:57:24,153 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:57:24,153 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:57:24,153 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:57:24,153 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:57:24,153 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:57:24,153 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:57:24,154 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:57:24,166 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:24,184 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 15:57:24,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:24,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:24,191 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:24,191 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:24,191 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:57:24,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:24,198 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 15:57:24,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:24,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:24,199 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:24,199 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:24,202 INFO L791 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 42#L-1true havoc main_#res;havoc main_#t~ret80, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 19#L105true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 104#L113true main_#t~ret80 := valid_product_#res;main_~tmp~9 := main_#t~ret80;havoc main_#t~ret80; 43#L949true assume 0 != main_~tmp~9; 93#L926true havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 65#L53-1true [2021-08-27 15:57:24,203 INFO L793 eck$LassoCheckResult]: Loop: 65#L53-1true assume !false; 40#L445true assume test_~splverifierCounter~0 < 4; 100#L446true test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 6#L454true assume !(0 != test_~tmp~5); 56#L454-1true test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 103#L464true assume !(0 != test_~tmp___0~2); 32#L464-1true test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 58#L474true assume 0 != test_~tmp___2~0; 122#L480-1true assume !(0 != ~pumpRunning~0); 76#L230true assume !(0 != ~systemActive~0); 99#L237true havoc __utac_acc__Specification1_spec__1_#t~ret7, __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 62#L167-3true __utac_acc__Specification1_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret7;havoc __utac_acc__Specification1_spec__1_#t~ret7; 34#L53true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 65#L53-1true [2021-08-27 15:57:24,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:24,207 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:57:24,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:24,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136051822] [2021-08-27 15:57:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:24,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:24,447 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:24,569 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:24,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:24,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1670724661, now seen corresponding path program 1 times [2021-08-27 15:57:24,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:24,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274686929] [2021-08-27 15:57:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:24,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:24,589 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:24,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:24,610 INFO L82 PathProgramCache]: Analyzing trace with hash 43554277, now seen corresponding path program 1 times [2021-08-27 15:57:24,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:24,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389517694] [2021-08-27 15:57:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:24,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:57:24,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:24,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389517694] [2021-08-27 15:57:24,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389517694] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:24,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:24,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:57:24,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51825329] [2021-08-27 15:57:24,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 15:57:24,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 15:57:24,889 INFO L87 Difference]: Start difference. First operand has 128 states, 127 states have (on average 1.5118110236220472) internal successors, (192), 127 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:25,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:25,063 INFO L93 Difference]: Finished difference Result 300 states and 426 transitions. [2021-08-27 15:57:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 15:57:25,065 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 300 states and 426 transitions. [2021-08-27 15:57:25,071 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 193 [2021-08-27 15:57:25,077 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 300 states to 279 states and 405 transitions. [2021-08-27 15:57:25,077 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 279 [2021-08-27 15:57:25,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 279 [2021-08-27 15:57:25,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 279 states and 405 transitions. [2021-08-27 15:57:25,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:25,080 INFO L681 BuchiCegarLoop]: Abstraction has 279 states and 405 transitions. [2021-08-27 15:57:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states and 405 transitions. [2021-08-27 15:57:25,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 162. [2021-08-27 15:57:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 162 states have (on average 1.4444444444444444) internal successors, (234), 161 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 234 transitions. [2021-08-27 15:57:25,131 INFO L704 BuchiCegarLoop]: Abstraction has 162 states and 234 transitions. [2021-08-27 15:57:25,131 INFO L587 BuchiCegarLoop]: Abstraction has 162 states and 234 transitions. [2021-08-27 15:57:25,131 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:57:25,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 162 states and 234 transitions. [2021-08-27 15:57:25,135 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 112 [2021-08-27 15:57:25,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:25,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:25,137 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:25,138 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:25,138 INFO L791 eck$LassoCheckResult]: Stem: 566#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 514#L-1 havoc main_#res;havoc main_#t~ret80, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 477#L105 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 478#L113 main_#t~ret80 := valid_product_#res;main_~tmp~9 := main_#t~ret80;havoc main_#t~ret80; 515#L949 assume 0 != main_~tmp~9; 516#L926 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 502#L53-1 [2021-08-27 15:57:25,139 INFO L793 eck$LassoCheckResult]: Loop: 502#L53-1 assume !false; 510#L445 assume test_~splverifierCounter~0 < 4; 511#L446 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 451#L454 assume !(0 != test_~tmp~5); 453#L454-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 532#L464 assume !(0 != test_~tmp___0~2); 497#L464-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 498#L474 assume 0 != test_~tmp___2~0; 524#L480-1 assume !(0 != ~pumpRunning~0); 534#L230 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret21, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 490#L288 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret20, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 487#L262-1 assume !(0 == ~pumpRunning~0); 450#L237 havoc __utac_acc__Specification1_spec__1_#t~ret7, __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 535#L167-3 __utac_acc__Specification1_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret7;havoc __utac_acc__Specification1_spec__1_#t~ret7; 501#L53 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 502#L53-1 [2021-08-27 15:57:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:25,140 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:57:25,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:25,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408310841] [2021-08-27 15:57:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:25,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,181 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,235 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:25,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1966055757, now seen corresponding path program 1 times [2021-08-27 15:57:25,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:25,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417342442] [2021-08-27 15:57:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:25,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:57:25,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:25,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417342442] [2021-08-27 15:57:25,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417342442] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:25,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:25,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:57:25,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123788155] [2021-08-27 15:57:25,251 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:57:25,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:25,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:57:25,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:57:25,252 INFO L87 Difference]: Start difference. First operand 162 states and 234 transitions. cyclomatic complexity: 75 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:25,317 INFO L93 Difference]: Finished difference Result 201 states and 274 transitions. [2021-08-27 15:57:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:57:25,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 274 transitions. [2021-08-27 15:57:25,319 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-08-27 15:57:25,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 274 transitions. [2021-08-27 15:57:25,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2021-08-27 15:57:25,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2021-08-27 15:57:25,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 274 transitions. [2021-08-27 15:57:25,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:25,323 INFO L681 BuchiCegarLoop]: Abstraction has 201 states and 274 transitions. [2021-08-27 15:57:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 274 transitions. [2021-08-27 15:57:25,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-08-27 15:57:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.36318407960199) internal successors, (274), 200 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 274 transitions. [2021-08-27 15:57:25,329 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 274 transitions. [2021-08-27 15:57:25,329 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 274 transitions. [2021-08-27 15:57:25,330 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:57:25,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 274 transitions. [2021-08-27 15:57:25,331 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 142 [2021-08-27 15:57:25,331 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:25,331 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:25,332 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:25,332 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:25,332 INFO L791 eck$LassoCheckResult]: Stem: 951#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 884#L-1 havoc main_#res;havoc main_#t~ret80, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 846#L105 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 847#L113 main_#t~ret80 := valid_product_#res;main_~tmp~9 := main_#t~ret80;havoc main_#t~ret80; 885#L949 assume 0 != main_~tmp~9; 886#L926 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 938#L53-1 [2021-08-27 15:57:25,333 INFO L793 eck$LassoCheckResult]: Loop: 938#L53-1 assume !false; 992#L445 assume test_~splverifierCounter~0 < 4; 993#L446 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 1015#L454 assume !(0 != test_~tmp~5); 1013#L454-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 1012#L464 assume !(0 != test_~tmp___0~2); 867#L464-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 868#L474 assume 0 != test_~tmp___2~0; 895#L480-1 assume !(0 != ~pumpRunning~0); 921#L230 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret21, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 859#L288 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret20, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 856#L262-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 857#L207-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 875#L212-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 842#L407-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 843#L407-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 854#L413-1 processEnvironment__wrappee__methaneQuery_#t~ret20 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret20;havoc processEnvironment__wrappee__methaneQuery_#t~ret20; 855#L266-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 818#L237 havoc __utac_acc__Specification1_spec__1_#t~ret7, __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 997#L167-3 __utac_acc__Specification1_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret7;havoc __utac_acc__Specification1_spec__1_#t~ret7; 995#L53 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 938#L53-1 [2021-08-27 15:57:25,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:25,334 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:57:25,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:25,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779255465] [2021-08-27 15:57:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:25,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,391 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,435 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:25,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:25,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1687938725, now seen corresponding path program 1 times [2021-08-27 15:57:25,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:25,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791284559] [2021-08-27 15:57:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:25,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:57:25,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:25,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791284559] [2021-08-27 15:57:25,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791284559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:25,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:25,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 15:57:25,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101367490] [2021-08-27 15:57:25,456 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:57:25,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 15:57:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 15:57:25,457 INFO L87 Difference]: Start difference. First operand 201 states and 274 transitions. cyclomatic complexity: 76 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:25,538 INFO L93 Difference]: Finished difference Result 567 states and 762 transitions. [2021-08-27 15:57:25,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 15:57:25,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 567 states and 762 transitions. [2021-08-27 15:57:25,544 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 410 [2021-08-27 15:57:25,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 567 states to 567 states and 762 transitions. [2021-08-27 15:57:25,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 567 [2021-08-27 15:57:25,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 567 [2021-08-27 15:57:25,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 567 states and 762 transitions. [2021-08-27 15:57:25,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:25,553 INFO L681 BuchiCegarLoop]: Abstraction has 567 states and 762 transitions. [2021-08-27 15:57:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states and 762 transitions. [2021-08-27 15:57:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 213. [2021-08-27 15:57:25,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 213 states have (on average 1.3427230046948357) internal successors, (286), 212 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 286 transitions. [2021-08-27 15:57:25,561 INFO L704 BuchiCegarLoop]: Abstraction has 213 states and 286 transitions. [2021-08-27 15:57:25,561 INFO L587 BuchiCegarLoop]: Abstraction has 213 states and 286 transitions. [2021-08-27 15:57:25,561 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 15:57:25,561 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 213 states and 286 transitions. [2021-08-27 15:57:25,562 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 150 [2021-08-27 15:57:25,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:25,563 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:25,563 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:25,563 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:25,563 INFO L791 eck$LassoCheckResult]: Stem: 1737#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1664#L-1 havoc main_#res;havoc main_#t~ret80, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 1624#L105 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1625#L113 main_#t~ret80 := valid_product_#res;main_~tmp~9 := main_#t~ret80;havoc main_#t~ret80; 1665#L949 assume 0 != main_~tmp~9; 1666#L926 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1721#L53-1 [2021-08-27 15:57:25,564 INFO L793 eck$LassoCheckResult]: Loop: 1721#L53-1 assume !false; 1795#L445 assume test_~splverifierCounter~0 < 4; 1796#L446 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 1805#L454 assume !(0 != test_~tmp~5); 1803#L454-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 1802#L464 assume !(0 != test_~tmp___0~2); 1645#L464-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 1646#L474 assume 0 != test_~tmp___2~0; 1799#L480-1 assume !(0 != ~pumpRunning~0); 1703#L230 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret21, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1637#L288 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret20, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1634#L262-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1635#L207-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1654#L212-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 1620#L407-3 assume !(0 != isHighWaterLevel_~tmp~4);isHighWaterLevel_~tmp___0~1 := 1; 1621#L407-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 1632#L413-1 processEnvironment__wrappee__methaneQuery_#t~ret20 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret20;havoc processEnvironment__wrappee__methaneQuery_#t~ret20; 1633#L266-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 1596#L237 havoc __utac_acc__Specification1_spec__1_#t~ret7, __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1798#L167-3 __utac_acc__Specification1_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret7;havoc __utac_acc__Specification1_spec__1_#t~ret7; 1797#L53 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 1721#L53-1 [2021-08-27 15:57:25,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:25,564 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 15:57:25,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:25,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354350376] [2021-08-27 15:57:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:25,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,591 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,614 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:25,615 INFO L82 PathProgramCache]: Analyzing trace with hash 87068637, now seen corresponding path program 1 times [2021-08-27 15:57:25,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:25,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715648371] [2021-08-27 15:57:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:25,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:57:25,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:57:25,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:57:25,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715648371] [2021-08-27 15:57:25,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715648371] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:57:25,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:57:25,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:57:25,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726805262] [2021-08-27 15:57:25,645 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:57:25,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:57:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 15:57:25,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 15:57:25,646 INFO L87 Difference]: Start difference. First operand 213 states and 286 transitions. cyclomatic complexity: 76 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:57:25,754 INFO L93 Difference]: Finished difference Result 660 states and 880 transitions. [2021-08-27 15:57:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 15:57:25,755 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 660 states and 880 transitions. [2021-08-27 15:57:25,759 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 484 [2021-08-27 15:57:25,762 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 660 states to 660 states and 880 transitions. [2021-08-27 15:57:25,762 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 660 [2021-08-27 15:57:25,763 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 660 [2021-08-27 15:57:25,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 660 states and 880 transitions. [2021-08-27 15:57:25,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:57:25,768 INFO L681 BuchiCegarLoop]: Abstraction has 660 states and 880 transitions. [2021-08-27 15:57:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states and 880 transitions. [2021-08-27 15:57:25,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 231. [2021-08-27 15:57:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 231 states have (on average 1.316017316017316) internal successors, (304), 230 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:57:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 304 transitions. [2021-08-27 15:57:25,778 INFO L704 BuchiCegarLoop]: Abstraction has 231 states and 304 transitions. [2021-08-27 15:57:25,779 INFO L587 BuchiCegarLoop]: Abstraction has 231 states and 304 transitions. [2021-08-27 15:57:25,779 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 15:57:25,779 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 231 states and 304 transitions. [2021-08-27 15:57:25,780 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 162 [2021-08-27 15:57:25,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:57:25,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:57:25,782 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:57:25,782 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:57:25,782 INFO L791 eck$LassoCheckResult]: Stem: 2624#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(13);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(110, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 2 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(102, #t~string29.base, 2 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 3 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string31.base, #t~string31.offset, 1);call write~init~int(80, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(117, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(109, #t~string31.base, 3 + #t~string31.offset, 1);call write~init~int(112, #t~string31.base, 4 + #t~string31.offset, 1);call write~init~int(58, #t~string31.base, 5 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 6 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string33.base, #t~string33.offset, 1);call write~init~int(110, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 2 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(102, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 3 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string37.base, #t~string37.offset, 1);call write~init~int(32, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 2550#L-1 havoc main_#res;havoc main_#t~ret80, main_~retValue_acc~11, main_~tmp~9;havoc main_~retValue_acc~11;havoc main_~tmp~9; 2511#L105 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 2512#L113 main_#t~ret80 := valid_product_#res;main_~tmp~9 := main_#t~ret80;havoc main_#t~ret80; 2551#L949 assume 0 != main_~tmp~9; 2552#L926 havoc test_#t~nondet41, test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2605#L53-1 [2021-08-27 15:57:25,782 INFO L793 eck$LassoCheckResult]: Loop: 2605#L53-1 assume !false; 2696#L445 assume test_~splverifierCounter~0 < 4; 2697#L446 test_~tmp~5 := test_#t~nondet41;havoc test_#t~nondet41; 2710#L454 assume !(0 != test_~tmp~5); 2708#L454-1 test_~tmp___0~2 := test_#t~nondet42;havoc test_#t~nondet42; 2707#L464 assume !(0 != test_~tmp___0~2); 2705#L464-1 test_~tmp___2~0 := test_#t~nondet43;havoc test_#t~nondet43; 2703#L474 assume 0 != test_~tmp___2~0; 2702#L480-1 assume !(0 != ~pumpRunning~0); 2647#L230 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret21, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 2524#L288 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret20, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 2521#L262-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret40, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 2522#L207-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 2541#L212-1 isHighWaterLevel_#t~ret40 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret40;havoc isHighWaterLevel_#t~ret40; 2639#L407-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 2640#L407-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 2519#L413-1 processEnvironment__wrappee__methaneQuery_#t~ret20 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret20;havoc processEnvironment__wrappee__methaneQuery_#t~ret20; 2520#L266-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 2483#L237 havoc __utac_acc__Specification1_spec__1_#t~ret7, __utac_acc__Specification1_spec__1_#t~ret8, __utac_acc__Specification1_spec__1_~tmp~0, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~0;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 2701#L167-3 __utac_acc__Specification1_spec__1_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~0 := __utac_acc__Specification1_spec__1_#t~ret7;havoc __utac_acc__Specification1_spec__1_#t~ret7; 2699#L53 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0); 2605#L53-1 [2021-08-27 15:57:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 5 times [2021-08-27 15:57:25,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:25,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752154284] [2021-08-27 15:57:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:25,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,806 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1926970201, now seen corresponding path program 1 times [2021-08-27 15:57:25,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:25,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256629144] [2021-08-27 15:57:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:25,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,846 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,852 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:25,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:57:25,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1911925901, now seen corresponding path program 1 times [2021-08-27 15:57:25,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:57:25,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991680534] [2021-08-27 15:57:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:57:25,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:57:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,884 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:57:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:57:25,940 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:06,311 WARN L207 SmtUtils]: Spent 40.15 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 15:58:48,237 WARN L207 SmtUtils]: Spent 19.95 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 15:58:48,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:58:48 BoogieIcfgContainer [2021-08-27 15:58:48,335 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:58:48,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:58:48,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:58:48,336 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:58:48,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:57:24" (3/4) ... [2021-08-27 15:58:48,338 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:58:48,381 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:58:48,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:58:48,382 INFO L168 Benchmark]: Toolchain (without parser) took 85634.30 ms. Allocated memory was 52.4 MB in the beginning and 117.4 MB in the end (delta: 65.0 MB). Free memory was 28.6 MB in the beginning and 43.9 MB in the end (delta: -15.3 MB). Peak memory consumption was 49.0 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:48,383 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 34.9 MB in the beginning and 34.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:58:48,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.01 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.4 MB in the beginning and 38.2 MB in the end (delta: -9.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:48,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.73 ms. Allocated memory is still 62.9 MB. Free memory was 38.1 MB in the beginning and 34.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:48,385 INFO L168 Benchmark]: Boogie Preprocessor took 59.07 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 31.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:48,385 INFO L168 Benchmark]: RCFGBuilder took 754.83 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 45.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:48,386 INFO L168 Benchmark]: BuchiAutomizer took 84219.40 ms. Allocated memory was 75.5 MB in the beginning and 117.4 MB in the end (delta: 41.9 MB). Free memory was 45.1 MB in the beginning and 46.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 72.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:48,387 INFO L168 Benchmark]: Witness Printer took 45.83 ms. Allocated memory is still 117.4 MB. Free memory was 46.9 MB in the beginning and 43.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:58:48,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 52.4 MB. Free memory was 34.9 MB in the beginning and 34.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 466.01 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.4 MB in the beginning and 38.2 MB in the end (delta: -9.8 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.73 ms. Allocated memory is still 62.9 MB. Free memory was 38.1 MB in the beginning and 34.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.07 ms. Allocated memory is still 62.9 MB. Free memory was 34.3 MB in the beginning and 31.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 754.83 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 45.1 MB in the end (delta: -13.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84219.40 ms. Allocated memory was 75.5 MB in the beginning and 117.4 MB in the end (delta: 41.9 MB). Free memory was 45.1 MB in the beginning and 46.9 MB in the end (delta: -1.8 MB). Peak memory consumption was 72.6 MB. Max. memory is 16.1 GB. * Witness Printer took 45.83 ms. Allocated memory is still 117.4 MB. Free memory was 46.9 MB in the beginning and 43.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 231 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.1s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 83.5s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 61.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 900 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 231 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 957 SDtfs, 1900 SDslu, 1792 SDs, 0 SdLazy, 220 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 241.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 444]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=16172} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=16172, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1abec89f=0, NULL=16198, NULL=16194, NULL=16184, methaneLevelCritical=0, tmp=0, NULL=0, NULL=16190, NULL=16179, NULL=0, retValue_acc=0, tmp___1=0, NULL=16191, NULL=0, NULL=16180, cleanupTimeShifts=4, NULL=16193, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4779c3=61, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2eafac16=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7afdf7a5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15ab5369=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@436c0f86=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62fee60c=0, \result=1, head=0, pumpRunning=0, NULL=16175, retValue_acc=1, NULL=0, NULL=0, tmp=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=16197, NULL=0, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=16177, NULL=16174, tmp=0, head=0, tmp=0, tmp=1, NULL=16189, NULL=0, NULL=0, NULL=0, NULL=16192, NULL=16195, NULL=16173, NULL=16199, NULL=16178, tmp___0=0, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=16188, NULL=16182, NULL=0, NULL=0, NULL=0, systemActive=1, \result=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@484360d7=0, retValue_acc=0, NULL=16196, \result=0, NULL=0, NULL=16176, NULL=0, NULL=16185, NULL=0, NULL=16183, NULL=16186, retValue_acc=1, tmp___2=61, splverifierCounter=0, NULL=0, \result=0, NULL=16187, NULL=16201, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c539fd7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ebf4fe3=0, NULL=0, NULL=0, NULL=16200} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L124] int waterLevel = 1; [L125] int methaneLevelCritical = 0; [L223] int pumpRunning = 0; [L224] int systemActive = 1; [L670] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L867] int cleanupTimeShifts = 4; [L940] int retValue_acc ; [L941] int tmp ; [L109] int retValue_acc ; [L112] retValue_acc = 1 [L113] return (retValue_acc); [L947] tmp = valid_product() [L949] COND TRUE \read(tmp) [L435] int splverifierCounter ; [L436] int tmp ; [L437] int tmp___0 ; [L438] int tmp___1 ; [L439] int tmp___2 ; [L442] splverifierCounter = 0 Loop: [L444] COND TRUE 1 [L446] COND TRUE splverifierCounter < 4 [L452] tmp = __VERIFIER_nondet_int() [L454] COND FALSE !(\read(tmp)) [L462] tmp___0 = __VERIFIER_nondet_int() [L464] COND FALSE !(\read(tmp___0)) [L472] tmp___2 = __VERIFIER_nondet_int() [L474] COND TRUE \read(tmp___2) [L230] COND FALSE !(\read(pumpRunning)) [L237] COND TRUE \read(systemActive) [L285] int tmp ; [L288] COND FALSE !(\read(pumpRunning)) [L259] int tmp ; [L262] COND TRUE ! pumpRunning [L399] int retValue_acc ; [L400] int tmp ; [L401] int tmp___0 ; [L204] int retValue_acc ; [L207] COND TRUE waterLevel < 2 [L208] retValue_acc = 1 [L209] return (retValue_acc); [L405] tmp = isHighWaterSensorDry() [L407] COND TRUE \read(tmp) [L408] tmp___0 = 0 [L412] retValue_acc = tmp___0 [L413] return (retValue_acc); [L264] tmp = isHighWaterLevel() [L266] COND FALSE !(\read(tmp)) [L46] int tmp ; [L47] int tmp___0 ; [L163] int retValue_acc ; [L166] retValue_acc = methaneLevelCritical [L167] return (retValue_acc); [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:58:48,438 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...