./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product48.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_spec2_product48.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 1ab16baa4986c30d82da896f91b34098372adf7a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:04:47,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:04:47,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:04:47,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:04:47,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:04:47,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:04:47,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:04:47,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:04:47,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:04:47,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:04:47,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:04:47,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:04:47,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:04:47,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:04:47,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:04:47,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:04:47,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:04:47,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:04:47,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:04:47,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:04:47,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:04:47,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:04:47,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:04:47,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:04:47,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:04:47,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:04:47,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:04:47,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:04:47,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:04:47,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:04:47,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:04:47,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:04:47,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:04:47,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:04:47,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:04:47,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:04:47,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:04:47,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:04:47,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:04:47,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:04:47,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:04:47,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:04:47,740 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:04:47,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:04:47,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:04:47,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:04:47,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:04:47,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:04:47,742 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:04:47,743 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:04:47,743 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:04:47,743 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:04:47,743 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:04:47,743 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:04:47,744 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:04:47,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:04:47,744 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:04:47,744 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:04:47,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:04:47,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:04:47,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:04:47,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:04:47,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:04:47,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:04:47,749 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:04:47,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:04:47,749 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:04:47,749 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:04:47,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:04:47,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:04:47,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:04:47,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:04:47,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:04:47,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:04:47,751 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:04:47,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ab16baa4986c30d82da896f91b34098372adf7a [2021-08-27 16:04:47,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:04:48,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:04:48,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:04:48,022 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:04:48,022 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:04:48,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2021-08-27 16:04:48,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01990a0d5/06084228db6540089bcb2e5db9e502d6/FLAGacbb3c3fc [2021-08-27 16:04:48,439 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:04:48,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2021-08-27 16:04:48,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01990a0d5/06084228db6540089bcb2e5db9e502d6/FLAGacbb3c3fc [2021-08-27 16:04:48,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01990a0d5/06084228db6540089bcb2e5db9e502d6 [2021-08-27 16:04:48,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:04:48,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:04:48,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:48,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:04:48,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:04:48,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2d69f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48, skipping insertion in model container [2021-08-27 16:04:48,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:04:48,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:04:48,686 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_spec2_product48.cil.c[17442,17455] [2021-08-27 16:04:48,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:48,695 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:04:48,736 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_spec2_product48.cil.c[17442,17455] [2021-08-27 16:04:48,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:48,753 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:04:48,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48 WrapperNode [2021-08-27 16:04:48,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:48,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:48,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:04:48,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:04:48,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:48,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:04:48,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:04:48,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:04:48,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:04:48,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:04:48,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:04:48,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:04:48,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (1/1) ... [2021-08-27 16:04:48,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:04:48,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:04:48,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:04:48,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:04:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:04:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:04:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:04:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:04:49,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:04:49,660 INFO L299 CfgBuilder]: Removed 200 assume(true) statements. [2021-08-27 16:04:49,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:49 BoogieIcfgContainer [2021-08-27 16:04:49,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:04:49,662 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:04:49,662 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:04:49,663 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:04:49,664 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:49,664 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:04:48" (1/3) ... [2021-08-27 16:04:49,664 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59e7e9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:49, skipping insertion in model container [2021-08-27 16:04:49,665 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:49,665 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:48" (2/3) ... [2021-08-27 16:04:49,665 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59e7e9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:49, skipping insertion in model container [2021-08-27 16:04:49,665 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:49,665 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:49" (3/3) ... [2021-08-27 16:04:49,666 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product48.cil.c [2021-08-27 16:04:49,699 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:04:49,699 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:04:49,699 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:04:49,699 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:04:49,699 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:04:49,700 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:04:49,700 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:04:49,700 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:04:49,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5190839694656488) internal successors, (199), 131 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:49,744 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:04:49,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:49,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:49,755 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:49,755 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:49,755 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:04:49,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 132 states, 131 states have (on average 1.5190839694656488) internal successors, (199), 131 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:49,768 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 85 [2021-08-27 16:04:49,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:49,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:49,771 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:49,771 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:49,778 INFO L791 eck$LassoCheckResult]: Stem: 117#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.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;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 45#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; 7#L168true havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 47#L176true main_#t~ret80 := valid_product_#res;main_~tmp~9 := main_#t~ret80;havoc main_#t~ret80; 109#L975true assume 0 != main_~tmp~9; 40#L951true ~methAndRunningLastTime~0 := 0; 124#L484true havoc test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 100#L495-1true [2021-08-27 16:04:49,779 INFO L793 eck$LassoCheckResult]: Loop: 100#L495-1true assume !false; 73#L196true assume test_~splverifierCounter~0 < 4; 83#L197true test_~tmp~0 := test_#t~nondet18;havoc test_#t~nondet18; 84#L205true assume !(0 != test_~tmp~0); 57#L205-1true test_~tmp___0~0 := test_#t~nondet19;havoc test_#t~nondet19; 132#L215true assume !(0 != test_~tmp___0~0); 8#L215-1true test_~tmp___2~0 := test_#t~nondet20;havoc test_#t~nondet20; 44#L225true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 75#L233-1true assume !(0 != ~pumpRunning~0); 13#L266true assume !(0 != ~systemActive~0); 67#L273true havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~5, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~5;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 46#L92-3true __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~5 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 27#L495true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5);~methAndRunningLastTime~0 := 0; 100#L495-1true [2021-08-27 16:04:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:49,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:04:49,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:49,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039957502] [2021-08-27 16:04:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:49,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:49,977 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:50,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:50,119 INFO L82 PathProgramCache]: Analyzing trace with hash 14512660, now seen corresponding path program 1 times [2021-08-27 16:04:50,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:50,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009262459] [2021-08-27 16:04:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:50,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:04:50,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:50,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009262459] [2021-08-27 16:04:50,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009262459] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:50,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:50,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:04:50,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716809998] [2021-08-27 16:04:50,161 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:50,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:50,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:04:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:04:50,175 INFO L87 Difference]: Start difference. First operand has 132 states, 131 states have (on average 1.5190839694656488) internal successors, (199), 131 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:50,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:50,241 INFO L93 Difference]: Finished difference Result 257 states and 373 transitions. [2021-08-27 16:04:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:04:50,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 257 states and 373 transitions. [2021-08-27 16:04:50,246 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 166 [2021-08-27 16:04:50,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 257 states to 243 states and 358 transitions. [2021-08-27 16:04:50,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 243 [2021-08-27 16:04:50,251 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 243 [2021-08-27 16:04:50,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 243 states and 358 transitions. [2021-08-27 16:04:50,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:50,253 INFO L681 BuchiCegarLoop]: Abstraction has 243 states and 358 transitions. [2021-08-27 16:04:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states and 358 transitions. [2021-08-27 16:04:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2021-08-27 16:04:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 241 states have (on average 1.4730290456431536) internal successors, (355), 240 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 355 transitions. [2021-08-27 16:04:50,307 INFO L704 BuchiCegarLoop]: Abstraction has 241 states and 355 transitions. [2021-08-27 16:04:50,307 INFO L587 BuchiCegarLoop]: Abstraction has 241 states and 355 transitions. [2021-08-27 16:04:50,307 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:04:50,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 241 states and 355 transitions. [2021-08-27 16:04:50,312 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 164 [2021-08-27 16:04:50,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:50,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:50,314 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:50,314 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:50,315 INFO L791 eck$LassoCheckResult]: Stem: 544#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.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;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 470#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; 405#L168 havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 406#L176 main_#t~ret80 := valid_product_#res;main_~tmp~9 := main_#t~ret80;havoc main_#t~ret80; 472#L975 assume 0 != main_~tmp~9; 460#L951 ~methAndRunningLastTime~0 := 0; 461#L484 havoc test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 537#L495-1 [2021-08-27 16:04:50,315 INFO L793 eck$LassoCheckResult]: Loop: 537#L495-1 assume !false; 538#L196 assume test_~splverifierCounter~0 < 4; 520#L197 test_~tmp~0 := test_#t~nondet18;havoc test_#t~nondet18; 521#L205 assume !(0 != test_~tmp~0); 561#L205-1 test_~tmp___0~0 := test_#t~nondet19;havoc test_#t~nondet19; 549#L215 assume !(0 != test_~tmp___0~0); 407#L215-1 test_~tmp___2~0 := test_#t~nondet20;havoc test_#t~nondet20; 408#L225 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 469#L233-1 assume !(0 != ~pumpRunning~0); 418#L266 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 419#L324 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret22, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 476#L298-1 assume !(0 == ~pumpRunning~0); 437#L273 havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~5, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~5;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 567#L92-3 __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~5 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 565#L495 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5);~methAndRunningLastTime~0 := 0; 537#L495-1 [2021-08-27 16:04:50,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:50,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:04:50,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:50,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576708786] [2021-08-27 16:04:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:50,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:50,363 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:50,409 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:50,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:50,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2018522314, now seen corresponding path program 1 times [2021-08-27 16:04:50,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:50,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849063113] [2021-08-27 16:04:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:50,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:04:50,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:50,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849063113] [2021-08-27 16:04:50,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849063113] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:50,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:50,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:04:50,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814623396] [2021-08-27 16:04:50,438 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:50,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:50,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:04:50,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:04:50,439 INFO L87 Difference]: Start difference. First operand 241 states and 355 transitions. cyclomatic complexity: 117 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 16:04:50,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:50,541 INFO L93 Difference]: Finished difference Result 330 states and 467 transitions. [2021-08-27 16:04:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:04:50,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 330 states and 467 transitions. [2021-08-27 16:04:50,543 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 231 [2021-08-27 16:04:50,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 330 states to 330 states and 467 transitions. [2021-08-27 16:04:50,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 330 [2021-08-27 16:04:50,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 330 [2021-08-27 16:04:50,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 330 states and 467 transitions. [2021-08-27 16:04:50,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:50,547 INFO L681 BuchiCegarLoop]: Abstraction has 330 states and 467 transitions. [2021-08-27 16:04:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states and 467 transitions. [2021-08-27 16:04:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2021-08-27 16:04:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 330 states have (on average 1.415151515151515) internal successors, (467), 329 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 467 transitions. [2021-08-27 16:04:50,554 INFO L704 BuchiCegarLoop]: Abstraction has 330 states and 467 transitions. [2021-08-27 16:04:50,554 INFO L587 BuchiCegarLoop]: Abstraction has 330 states and 467 transitions. [2021-08-27 16:04:50,554 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:04:50,554 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 330 states and 467 transitions. [2021-08-27 16:04:50,555 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 231 [2021-08-27 16:04:50,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:50,556 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:50,556 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:50,556 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 16:04:50,556 INFO L791 eck$LassoCheckResult]: Stem: 1112#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.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;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4; 1047#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; 981#L168 havoc valid_product_#res;havoc valid_product_~retValue_acc~4;havoc valid_product_~retValue_acc~4;valid_product_~retValue_acc~4 := 1;valid_product_#res := valid_product_~retValue_acc~4; 982#L176 main_#t~ret80 := valid_product_#res;main_~tmp~9 := main_#t~ret80;havoc main_#t~ret80; 1049#L975 assume 0 != main_~tmp~9; 1038#L951 ~methAndRunningLastTime~0 := 0; 1039#L484 havoc test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1113#L495-1 [2021-08-27 16:04:50,556 INFO L793 eck$LassoCheckResult]: Loop: 1113#L495-1 assume !false; 1292#L196 assume test_~splverifierCounter~0 < 4; 1291#L197 test_~tmp~0 := test_#t~nondet18;havoc test_#t~nondet18; 1290#L205 assume !(0 != test_~tmp~0); 1288#L205-1 test_~tmp___0~0 := test_#t~nondet19;havoc test_#t~nondet19; 1116#L215 assume !(0 != test_~tmp___0~0); 983#L215-1 test_~tmp___2~0 := test_#t~nondet20;havoc test_#t~nondet20; 984#L225 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1046#L233-1 assume !(0 != ~pumpRunning~0); 994#L266 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 995#L324 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret22, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1003#L298-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret42, 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~2;havoc isHighWaterSensorDry_~retValue_acc~2; 1053#L132-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 1092#L137-1 isHighWaterLevel_#t~ret42 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret42;havoc isHighWaterLevel_#t~ret42; 1031#L443-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1032#L443-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 1102#L449-1 processEnvironment__wrappee__methaneQuery_#t~ret22 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret22;havoc processEnvironment__wrappee__methaneQuery_#t~ret22; 1014#L302-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 1012#L273 havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~5, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~5;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 1298#L92-3 __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~5 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 1296#L495 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~5);~methAndRunningLastTime~0 := 0; 1113#L495-1 [2021-08-27 16:04:50,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:50,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:04:50,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:50,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412981494] [2021-08-27 16:04:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:50,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:50,592 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:50,621 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:50,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1917413410, now seen corresponding path program 1 times [2021-08-27 16:04:50,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:50,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588600763] [2021-08-27 16:04:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:50,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:50,626 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:50,637 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:50,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:50,638 INFO L82 PathProgramCache]: Analyzing trace with hash -604412260, now seen corresponding path program 1 times [2021-08-27 16:04:50,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:50,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449449235] [2021-08-27 16:04:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:50,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:50,662 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:50,692 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:31,579 WARN L207 SmtUtils]: Spent 40.52 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:06:13,183 WARN L207 SmtUtils]: Spent 20.89 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:06:13,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:06:13 BoogieIcfgContainer [2021-08-27 16:06:13,286 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:06:13,287 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:06:13,287 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:06:13,287 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:06:13,288 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:49" (3/4) ... [2021-08-27 16:06:13,289 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:06:13,322 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:06:13,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:06:13,324 INFO L168 Benchmark]: Toolchain (without parser) took 84859.99 ms. Allocated memory was 50.3 MB in the beginning and 92.3 MB in the end (delta: 41.9 MB). Free memory was 26.6 MB in the beginning and 51.5 MB in the end (delta: -24.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:13,324 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 50.3 MB. Free memory was 32.7 MB in the beginning and 32.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:06:13,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.54 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.4 MB in the beginning and 39.8 MB in the end (delta: -13.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:13,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.78 ms. Allocated memory is still 62.9 MB. Free memory was 39.8 MB in the beginning and 35.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:13,325 INFO L168 Benchmark]: Boogie Preprocessor took 43.80 ms. Allocated memory is still 62.9 MB. Free memory was 35.8 MB in the beginning and 33.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:13,325 INFO L168 Benchmark]: RCFGBuilder took 794.02 ms. Allocated memory is still 62.9 MB. Free memory was 33.0 MB in the beginning and 40.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:13,326 INFO L168 Benchmark]: BuchiAutomizer took 83624.79 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 40.9 MB in the beginning and 54.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:13,326 INFO L168 Benchmark]: Witness Printer took 36.07 ms. Allocated memory is still 92.3 MB. Free memory was 53.6 MB in the beginning and 51.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:06:13,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 50.3 MB. Free memory was 32.7 MB in the beginning and 32.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.54 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.4 MB in the beginning and 39.8 MB in the end (delta: -13.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.78 ms. Allocated memory is still 62.9 MB. Free memory was 39.8 MB in the beginning and 35.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.80 ms. Allocated memory is still 62.9 MB. Free memory was 35.8 MB in the beginning and 33.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 794.02 ms. Allocated memory is still 62.9 MB. Free memory was 33.0 MB in the beginning and 40.9 MB in the end (delta: -7.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 83624.79 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 40.9 MB in the beginning and 54.5 MB in the end (delta: -13.6 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. * Witness Printer took 36.07 ms. Allocated memory is still 92.3 MB. Free memory was 53.6 MB in the beginning and 51.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 330 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 83.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 83.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 39.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 330 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 357 SDtfs, 325 SDslu, 242 SDs, 0 SdLazy, 41 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 195]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31461} State at position 1 is {NULL=0, NULL=0, NULL=31466, NULL=0, NULL=31461, NULL=0, NULL=31489, NULL=31462, methaneLevelCritical=0, NULL=0, NULL=31481, NULL=31463, NULL=0, retValue_acc=0, tmp___1=0, NULL=31480, NULL=0, NULL=31468, cleanupTimeShifts=4, tmp=0, NULL=31479, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14f312ce=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c47a88c=0, NULL=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7aa3e2e9=0, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=31469, retValue_acc=1, NULL=0, NULL=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=31485, NULL=0, NULL=0, NULL=0, NULL=0, methAndRunningLastTime=0, NULL=31474, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ac63128=0, NULL=31470, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@790099cb=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@611421bb=0, head=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@272c2c4e=76, tmp=1, NULL=31486, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=31477, NULL=31488, NULL=31473, NULL=31475, tmp___0=0, NULL=0, NULL=31484, NULL=0, NULL=0, NULL=0, NULL=31483, NULL=0, NULL=0, systemActive=1, NULL=0, NULL=31487, \result=0, NULL=0, retValue_acc=0, NULL=31465, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f4a8a17=0, \result=0, NULL=31467, NULL=0, NULL=31472, retValue_acc=1, NULL=31471, NULL=31482, tmp___2=76, tmp___0=0, splverifierCounter=0, NULL=0, \result=0, NULL=31464, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24fed61e=0, NULL=31476, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5924f109=0, tmp=0, NULL=31478} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L258] int pumpRunning = 0; [L259] int systemActive = 1; [L478] int methAndRunningLastTime ; [L686] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L892] int cleanupTimeShifts = 4; [L966] int retValue_acc ; [L967] int tmp ; [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); [L973] tmp = valid_product() [L975] COND TRUE \read(tmp) [L483] methAndRunningLastTime = 0 [L186] int splverifierCounter ; [L187] int tmp ; [L188] int tmp___0 ; [L189] int tmp___1 ; [L190] int tmp___2 ; [L193] splverifierCounter = 0 Loop: [L195] COND TRUE 1 [L197] COND TRUE splverifierCounter < 4 [L203] tmp = __VERIFIER_nondet_int() [L205] COND FALSE !(\read(tmp)) [L213] tmp___0 = __VERIFIER_nondet_int() [L215] COND FALSE !(\read(tmp___0)) [L223] tmp___2 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp___2) [L472] systemActive = 1 [L266] COND FALSE !(\read(pumpRunning)) [L273] COND TRUE \read(systemActive) [L321] int tmp ; [L324] COND FALSE !(\read(pumpRunning)) [L295] int tmp ; [L298] COND TRUE ! pumpRunning [L435] int retValue_acc ; [L436] int tmp ; [L437] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L441] tmp = isHighWaterSensorDry() [L443] COND TRUE \read(tmp) [L444] tmp___0 = 0 [L448] retValue_acc = tmp___0 [L449] return (retValue_acc); [L300] tmp = isHighWaterLevel() [L302] COND FALSE !(\read(tmp)) [L488] int tmp ; [L489] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L493] tmp = isMethaneLevelCritical() [L495] COND FALSE !(\read(tmp)) [L511] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:06:13,379 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...