./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product60.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_product60.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 cd72c57a95195c6db69021eb34c8125c134b3812 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:58:54,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:58:54,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:58:54,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:58:54,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:58:54,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:58:54,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:58:54,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:58:54,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:58:54,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:58:54,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:58:54,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:58:54,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:58:54,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:58:54,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:58:54,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:58:54,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:58:54,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:58:54,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:58:54,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:58:54,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:58:54,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:58:54,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:58:54,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:58:54,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:58:54,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:58:54,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:58:54,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:58:54,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:58:54,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:58:54,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:58:54,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:58:54,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:58:54,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:58:54,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:58:54,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:58:54,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:58:54,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:58:54,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:58:54,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:58:54,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:58:54,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:58:54,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:58:54,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:58:54,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:58:54,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:58:54,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:58:54,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:58:54,763 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:58:54,763 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:58:54,763 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:58:54,764 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:58:54,764 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:58:54,765 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:58:54,765 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:58:54,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:58:54,765 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:58:54,765 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:58:54,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:58:54,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:58:54,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:58:54,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:58:54,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:58:54,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:58:54,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:58:54,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:58:54,767 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:58:54,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:58:54,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:58:54,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:58:54,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:58:54,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:58:54,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:58:54,768 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:58:54,769 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:58:54,770 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd72c57a95195c6db69021eb34c8125c134b3812 [2021-08-27 15:58:55,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:58:55,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:58:55,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:58:55,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:58:55,088 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:58:55,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product60.cil.c [2021-08-27 15:58:55,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f038c00d/2fef1c53bc0f458cbdd298c6d1fb55b3/FLAGa669e6ab5 [2021-08-27 15:58:55,664 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:58:55,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product60.cil.c [2021-08-27 15:58:55,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f038c00d/2fef1c53bc0f458cbdd298c6d1fb55b3/FLAGa669e6ab5 [2021-08-27 15:58:56,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f038c00d/2fef1c53bc0f458cbdd298c6d1fb55b3 [2021-08-27 15:58:56,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:58:56,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:58:56,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:56,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:58:56,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:58:56,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db6fd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56, skipping insertion in model container [2021-08-27 15:58:56,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:58:56,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:58:56,399 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_product60.cil.c[14245,14258] [2021-08-27 15:58:56,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:56,443 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:58:56,503 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_product60.cil.c[14245,14258] [2021-08-27 15:58:56,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:56,528 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:58:56,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56 WrapperNode [2021-08-27 15:58:56,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:56,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:56,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:58:56,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:58:56,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:56,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:58:56,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:58:56,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:58:56,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:58:56,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:58:56,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:58:56,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:58:56,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (1/1) ... [2021-08-27 15:58:56,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:58:56,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:58:56,662 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 15:58:56,676 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 15:58:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:58:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:58:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:58:56,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:58:57,491 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:58:57,491 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-08-27 15:58:57,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:57 BoogieIcfgContainer [2021-08-27 15:58:57,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:58:57,494 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:58:57,494 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:58:57,499 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:58:57,499 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:57,500 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:58:56" (1/3) ... [2021-08-27 15:58:57,501 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1697da7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:57, skipping insertion in model container [2021-08-27 15:58:57,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:57,501 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:56" (2/3) ... [2021-08-27 15:58:57,501 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1697da7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:57, skipping insertion in model container [2021-08-27 15:58:57,501 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:57,501 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:57" (3/3) ... [2021-08-27 15:58:57,502 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product60.cil.c [2021-08-27 15:58:57,545 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:58:57,545 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:58:57,545 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:58:57,545 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:58:57,545 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:58:57,545 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:58:57,545 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:58:57,545 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:58:57,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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 15:58:57,601 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 15:58:57,601 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:57,601 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:57,608 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:57,608 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:57,608 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:58:57,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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 15:58:57,624 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 15:58:57,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:57,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:57,626 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:57,626 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:57,630 INFO L791 eck$LassoCheckResult]: Stem: 123#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 37#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 10#L991true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 118#L999true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 129#L132true assume 0 != main_~tmp~0; 18#L105true havoc test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 119#L265-1true [2021-08-27 15:58:57,630 INFO L793 eck$LassoCheckResult]: Loop: 119#L265-1true assume !false; 116#L671true assume test_~splverifierCounter~0 < 4; 105#L672true test_~tmp~5 := test_#t~nondet55;havoc test_#t~nondet55; 127#L680true assume !(0 != test_~tmp~5); 25#L680-1true test_~tmp___0~1 := test_#t~nondet56;havoc test_#t~nondet56; 53#L690true assume !(0 != test_~tmp___0~1); 6#L690-1true test_~tmp___2~0 := test_#t~nondet57;havoc test_#t~nondet57; 59#L700true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 24#L708-1true assume !(0 != ~pumpRunning~0); 54#L738true assume !(0 != ~systemActive~0); 71#L745true havoc __utac_acc__Specification1_spec__1_#t~ret18, __utac_acc__Specification1_spec__1_#t~ret19, __utac_acc__Specification1_spec__1_~tmp~1, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 72#L195-2true __utac_acc__Specification1_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~1 := __utac_acc__Specification1_spec__1_#t~ret18;havoc __utac_acc__Specification1_spec__1_#t~ret18; 66#L265true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~1); 119#L265-1true [2021-08-27 15:58:57,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:57,636 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:58:57,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:57,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73831803] [2021-08-27 15:58:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:57,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:57,879 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:57,990 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:57,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:57,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1669554868, now seen corresponding path program 1 times [2021-08-27 15:58:57,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:57,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411674806] [2021-08-27 15:58:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:57,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:58,041 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 15:58:58,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:58,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411674806] [2021-08-27 15:58:58,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411674806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:58,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:58,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:58:58,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465082967] [2021-08-27 15:58:58,049 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:58:58,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:58,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:58:58,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:58:58,072 INFO L87 Difference]: Start difference. First operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 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 15:58:58,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:58,154 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-08-27 15:58:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:58:58,156 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 262 states and 378 transitions. [2021-08-27 15:58:58,167 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 170 [2021-08-27 15:58:58,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 262 states to 248 states and 363 transitions. [2021-08-27 15:58:58,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 248 [2021-08-27 15:58:58,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 248 [2021-08-27 15:58:58,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 248 states and 363 transitions. [2021-08-27 15:58:58,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:58,182 INFO L681 BuchiCegarLoop]: Abstraction has 248 states and 363 transitions. [2021-08-27 15:58:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states and 363 transitions. [2021-08-27 15:58:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2021-08-27 15:58:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 246 states have (on average 1.4634146341463414) internal successors, (360), 245 states have internal predecessors, (360), 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 15:58:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 360 transitions. [2021-08-27 15:58:58,213 INFO L704 BuchiCegarLoop]: Abstraction has 246 states and 360 transitions. [2021-08-27 15:58:58,213 INFO L587 BuchiCegarLoop]: Abstraction has 246 states and 360 transitions. [2021-08-27 15:58:58,214 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:58:58,214 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 246 states and 360 transitions. [2021-08-27 15:58:58,225 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2021-08-27 15:58:58,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:58,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:58,226 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:58,226 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:58,226 INFO L791 eck$LassoCheckResult]: Stem: 542#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 469#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 419#L991 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 420#L999 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 538#L132 assume 0 != main_~tmp~0; 436#L105 havoc test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 437#L265-1 [2021-08-27 15:58:58,226 INFO L793 eck$LassoCheckResult]: Loop: 437#L265-1 assume !false; 577#L671 assume test_~splverifierCounter~0 < 4; 578#L672 test_~tmp~5 := test_#t~nondet55;havoc test_#t~nondet55; 642#L680 assume !(0 != test_~tmp~5); 640#L680-1 test_~tmp___0~1 := test_#t~nondet56;havoc test_#t~nondet56; 639#L690 assume !(0 != test_~tmp___0~1); 636#L690-1 test_~tmp___2~0 := test_#t~nondet57;havoc test_#t~nondet57; 634#L700 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 493#L708-1 assume !(0 != ~pumpRunning~0); 629#L738 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret60, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 627#L796 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret59, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 620#L770-1 assume !(0 == ~pumpRunning~0); 505#L745 havoc __utac_acc__Specification1_spec__1_#t~ret18, __utac_acc__Specification1_spec__1_#t~ret19, __utac_acc__Specification1_spec__1_~tmp~1, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 506#L195-2 __utac_acc__Specification1_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~1 := __utac_acc__Specification1_spec__1_#t~ret18;havoc __utac_acc__Specification1_spec__1_#t~ret18; 499#L265 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~1); 437#L265-1 [2021-08-27 15:58:58,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:58,227 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:58:58,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:58,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203368448] [2021-08-27 15:58:58,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:58,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:58,270 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:58,338 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:58,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:58,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1405144267, now seen corresponding path program 1 times [2021-08-27 15:58:58,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:58,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320396570] [2021-08-27 15:58:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:58,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:58,360 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 15:58:58,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:58,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320396570] [2021-08-27 15:58:58,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320396570] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:58,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:58,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:58:58,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043097328] [2021-08-27 15:58:58,364 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:58:58,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:58:58,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:58:58,366 INFO L87 Difference]: Start difference. First operand 246 states and 360 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 15:58:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:58,470 INFO L93 Difference]: Finished difference Result 329 states and 460 transitions. [2021-08-27 15:58:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:58:58,471 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 329 states and 460 transitions. [2021-08-27 15:58:58,474 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 231 [2021-08-27 15:58:58,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 329 states to 329 states and 460 transitions. [2021-08-27 15:58:58,478 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 329 [2021-08-27 15:58:58,479 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 329 [2021-08-27 15:58:58,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 329 states and 460 transitions. [2021-08-27 15:58:58,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:58,487 INFO L681 BuchiCegarLoop]: Abstraction has 329 states and 460 transitions. [2021-08-27 15:58:58,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states and 460 transitions. [2021-08-27 15:58:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2021-08-27 15:58:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 329 states have (on average 1.3981762917933132) internal successors, (460), 328 states have internal predecessors, (460), 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 15:58:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 460 transitions. [2021-08-27 15:58:58,509 INFO L704 BuchiCegarLoop]: Abstraction has 329 states and 460 transitions. [2021-08-27 15:58:58,509 INFO L587 BuchiCegarLoop]: Abstraction has 329 states and 460 transitions. [2021-08-27 15:58:58,509 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:58:58,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 329 states and 460 transitions. [2021-08-27 15:58:58,511 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 231 [2021-08-27 15:58:58,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:58,512 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:58,513 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:58,514 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 15:58:58,514 INFO L791 eck$LassoCheckResult]: Stem: 1122#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(21);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(30);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(9);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(21);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(30);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(9);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(25);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(30);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(9);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(25);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(13);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(110, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 2 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(102, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 3 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(80, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(117, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(109, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(112, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(32, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1050#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 999#L991 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 1000#L999 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1119#L132 assume 0 != main_~tmp~0; 1016#L105 havoc test_#t~nondet55, test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1017#L265-1 [2021-08-27 15:58:58,514 INFO L793 eck$LassoCheckResult]: Loop: 1017#L265-1 assume !false; 1118#L671 assume test_~splverifierCounter~0 < 4; 1114#L672 test_~tmp~5 := test_#t~nondet55;havoc test_#t~nondet55; 1115#L680 assume !(0 != test_~tmp~5); 1028#L680-1 test_~tmp___0~1 := test_#t~nondet56;havoc test_#t~nondet56; 1029#L690 assume !(0 != test_~tmp___0~1); 990#L690-1 test_~tmp___2~0 := test_#t~nondet57;havoc test_#t~nondet57; 991#L700 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 998#L708-1 assume !(0 != ~pumpRunning~0); 1027#L738 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret60, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1070#L796 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret59, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1062#L770-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret79, isHighWaterLevel_~retValue_acc~10, isHighWaterLevel_~tmp~9, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~10;havoc isHighWaterLevel_~tmp~9;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~3;havoc isHighWaterSensorDry_~retValue_acc~3; 1039#L235-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~3 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~3; 1040#L240-1 isHighWaterLevel_#t~ret79 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~9 := isHighWaterLevel_#t~ret79;havoc isHighWaterLevel_#t~ret79; 986#L916-3 assume 0 != isHighWaterLevel_~tmp~9;isHighWaterLevel_~tmp___0~2 := 0; 987#L916-5 isHighWaterLevel_~retValue_acc~10 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~10; 1092#L922-1 processEnvironment__wrappee__highWaterSensor_#t~ret59 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret59;havoc processEnvironment__wrappee__highWaterSensor_#t~ret59; 1093#L774-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1009#L745 havoc __utac_acc__Specification1_spec__1_#t~ret18, __utac_acc__Specification1_spec__1_#t~ret19, __utac_acc__Specification1_spec__1_~tmp~1, __utac_acc__Specification1_spec__1_~tmp___0~0;havoc __utac_acc__Specification1_spec__1_~tmp~1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 1088#L195-2 __utac_acc__Specification1_spec__1_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~1 := __utac_acc__Specification1_spec__1_#t~ret18;havoc __utac_acc__Specification1_spec__1_#t~ret18; 1082#L265 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~1); 1017#L265-1 [2021-08-27 15:58:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:58,515 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:58:58,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:58,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333119464] [2021-08-27 15:58:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:58,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:58,564 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:58,624 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1224409665, now seen corresponding path program 1 times [2021-08-27 15:58:58,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:58,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7273296] [2021-08-27 15:58:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:58,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:58,630 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:58,646 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:58,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:58,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1680480859, now seen corresponding path program 1 times [2021-08-27 15:58:58,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:58,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83927223] [2021-08-27 15:58:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:58,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:58,692 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:58,759 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:59:39,071 WARN L207 SmtUtils]: Spent 40.06 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:00:19,390 WARN L207 SmtUtils]: Spent 19.86 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:00:19,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:00:19 BoogieIcfgContainer [2021-08-27 16:00:19,499 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:00:19,499 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:00:19,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:00:19,500 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:00:19,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:57" (3/4) ... [2021-08-27 16:00:19,502 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:00:19,540 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:00:19,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:00:19,541 INFO L168 Benchmark]: Toolchain (without parser) took 83423.77 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 44.9 MB in the beginning and 35.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:19,541 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 65.0 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:00:19,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.40 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 41.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:19,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.80 ms. Allocated memory is still 65.0 MB. Free memory was 41.3 MB in the beginning and 37.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:19,543 INFO L168 Benchmark]: Boogie Preprocessor took 36.47 ms. Allocated memory is still 65.0 MB. Free memory was 37.5 MB in the beginning and 34.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:19,543 INFO L168 Benchmark]: RCFGBuilder took 864.66 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 34.5 MB in the beginning and 47.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:19,544 INFO L168 Benchmark]: BuchiAutomizer took 82005.00 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 47.3 MB in the beginning and 37.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:19,544 INFO L168 Benchmark]: Witness Printer took 40.92 ms. Allocated memory is still 96.5 MB. Free memory was 37.5 MB in the beginning and 35.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:00:19,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 65.0 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 411.40 ms. Allocated memory is still 65.0 MB. Free memory was 44.7 MB in the beginning and 41.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.80 ms. Allocated memory is still 65.0 MB. Free memory was 41.3 MB in the beginning and 37.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.47 ms. Allocated memory is still 65.0 MB. Free memory was 37.5 MB in the beginning and 34.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 864.66 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 34.5 MB in the beginning and 47.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 82005.00 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 47.3 MB in the beginning and 37.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.1 GB. * Witness Printer took 40.92 ms. Allocated memory is still 96.5 MB. Free memory was 37.5 MB in the beginning and 35.4 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 329 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.9s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 81.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 42.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 329 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 361 SDtfs, 320 SDslu, 248 SDs, 0 SdLazy, 41 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.7ms 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: 670]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=23340} State at position 1 is {NULL=0, NULL=0, NULL=23340, NULL=0, NULL=0, NULL=23365, NULL=23358, retValue_acc=1, methaneLevelCritical=0, tmp=0, NULL=0, NULL=23357, tmp___1=0, NULL=0, NULL=23355, cleanupTimeShifts=4, NULL=23345, NULL=23352, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, tmp=1, NULL=23360, retValue_acc=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18491f5d=0, tmp=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp___0=0, tmp=1, NULL=23356, NULL=23341, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7517c86e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f9fac=0, head=0, tmp=0, NULL=0, NULL=23367, NULL=23342, NULL=23350, retValue_acc=0, NULL=0, retValue_acc=0, NULL=0, NULL=23354, NULL=0, NULL=23361, tmp___0=0, NULL=23364, NULL=23368, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7302c635=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d6e6804=0, NULL=23349, tmp=0, NULL=0, systemActive=1, \result=0, NULL=23363, NULL=0, NULL=0, NULL=23366, NULL=23351, \result=0, NULL=23353, NULL=23348, NULL=0, NULL=0, NULL=0, NULL=23344, NULL=23347, tmp___2=62, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=23346, NULL=23362, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@288fb2de=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34637ce9=62, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62bf5030=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40d10873=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23f90101=0, NULL=23343, NULL=0, NULL=0, NULL=0, NULL=23359} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L152] int waterLevel = 1; [L153] int methaneLevelCritical = 0; [L452] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L731] int pumpRunning = 0; [L732] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L995] int retValue_acc ; [L998] retValue_acc = 1 [L999] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L661] int splverifierCounter ; [L662] int tmp ; [L663] int tmp___0 ; [L664] int tmp___1 ; [L665] int tmp___2 ; [L668] splverifierCounter = 0 Loop: [L670] COND TRUE 1 [L672] COND TRUE splverifierCounter < 4 [L678] tmp = __VERIFIER_nondet_int() [L680] COND FALSE !(\read(tmp)) [L688] tmp___0 = __VERIFIER_nondet_int() [L690] COND FALSE !(\read(tmp___0)) [L698] tmp___2 = __VERIFIER_nondet_int() [L700] COND TRUE \read(tmp___2) [L964] systemActive = 1 [L738] COND FALSE !(\read(pumpRunning)) [L745] COND TRUE \read(systemActive) [L793] int tmp ; [L796] COND FALSE !(\read(pumpRunning)) [L767] int tmp ; [L770] COND TRUE ! pumpRunning [L908] int retValue_acc ; [L909] int tmp ; [L910] int tmp___0 ; [L232] int retValue_acc ; [L235] COND TRUE waterLevel < 2 [L236] retValue_acc = 1 [L237] return (retValue_acc); [L914] tmp = isHighWaterSensorDry() [L916] COND TRUE \read(tmp) [L917] tmp___0 = 0 [L921] retValue_acc = tmp___0 [L922] return (retValue_acc); [L772] tmp = isHighWaterLevel() [L774] COND FALSE !(\read(tmp)) [L258] int tmp ; [L259] int tmp___0 ; [L191] int retValue_acc ; [L194] retValue_acc = methaneLevelCritical [L195] return (retValue_acc); [L263] tmp = isMethaneLevelCritical() [L265] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:00:19,591 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...