./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product06.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product06.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 daa9da8859207d10d864ef24e046b0be94d62d80 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:07:20,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:07:20,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:07:20,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:07:20,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:07:20,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:07:20,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:07:20,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:07:20,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:07:20,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:07:20,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:07:20,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:07:20,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:07:20,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:07:20,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:07:20,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:07:20,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:07:20,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:07:20,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:07:20,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:07:20,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:07:20,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:07:20,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:07:20,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:07:20,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:07:20,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:07:20,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:07:20,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:07:20,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:07:20,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:07:20,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:07:20,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:07:20,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:07:20,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:07:20,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:07:20,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:07:20,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:07:20,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:07:20,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:07:20,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:07:20,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:07:20,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:07:20,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:07:20,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:07:20,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:07:20,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:07:20,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:07:20,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:07:20,705 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:07:20,705 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:07:20,706 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:07:20,706 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:07:20,706 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:07:20,706 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:07:20,706 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:07:20,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:07:20,706 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:07:20,707 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:07:20,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:07:20,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:07:20,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:07:20,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:07:20,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:07:20,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:07:20,708 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:07:20,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:07:20,708 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:07:20,708 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:07:20,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:07:20,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:07:20,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:07:20,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:07:20,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:07:20,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:07:20,709 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:07:20,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> daa9da8859207d10d864ef24e046b0be94d62d80 [2021-08-27 16:07:20,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:07:20,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:07:20,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:07:20,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:07:20,909 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:07:20,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product06.cil.c [2021-08-27 16:07:20,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f56b6b07b/651a17ec3c214e94b9274a9399ec5795/FLAGe8caca788 [2021-08-27 16:07:21,364 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:07:21,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product06.cil.c [2021-08-27 16:07:21,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f56b6b07b/651a17ec3c214e94b9274a9399ec5795/FLAGe8caca788 [2021-08-27 16:07:21,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f56b6b07b/651a17ec3c214e94b9274a9399ec5795 [2021-08-27 16:07:21,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:07:21,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:07:21,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:07:21,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:07:21,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:07:21,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:07:21" (1/1) ... [2021-08-27 16:07:21,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c703fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:21, skipping insertion in model container [2021-08-27 16:07:21,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:07:21" (1/1) ... [2021-08-27 16:07:21,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:07:21,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:07:21,836 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product06.cil.c[1281,1294] [2021-08-27 16:07:21,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:07:21,956 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:07:21,991 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product06.cil.c[1281,1294] [2021-08-27 16:07:22,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:07:22,042 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:07:22,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22 WrapperNode [2021-08-27 16:07:22,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:07:22,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:07:22,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:07:22,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:07:22,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:07:22,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:07:22,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:07:22,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:07:22,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:07:22,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:07:22,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:07:22,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:07:22,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (1/1) ... [2021-08-27 16:07:22,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:07:22,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:07:22,155 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 16:07:22,172 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 16:07:22,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:07:22,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:07:22,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:07:22,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:07:22,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:07:22,753 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-08-27 16:07:22,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:07:22 BoogieIcfgContainer [2021-08-27 16:07:22,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:07:22,755 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:07:22,755 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:07:22,757 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:07:22,757 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:07:22,757 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:07:21" (1/3) ... [2021-08-27 16:07:22,758 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7485cb4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:07:22, skipping insertion in model container [2021-08-27 16:07:22,758 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:07:22,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:07:22" (2/3) ... [2021-08-27 16:07:22,758 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7485cb4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:07:22, skipping insertion in model container [2021-08-27 16:07:22,758 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:07:22,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:07:22" (3/3) ... [2021-08-27 16:07:22,759 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product06.cil.c [2021-08-27 16:07:22,791 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:07:22,791 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:07:22,791 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:07:22,791 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:07:22,791 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:07:22,791 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:07:22,792 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:07:22,792 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:07:22,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 72 states, 71 states have (on average 1.5211267605633803) internal successors, (108), 71 states have internal predecessors, (108), 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 16:07:22,821 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 16:07:22,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:22,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:22,827 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:22,827 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:22,827 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:07:22,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 72 states, 71 states have (on average 1.5211267605633803) internal successors, (108), 71 states have internal predecessors, (108), 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 16:07:22,837 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-27 16:07:22,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:22,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:22,838 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:22,838 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:22,846 INFO L791 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(13);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(77, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(101, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(116, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string35.base, #t~string35.offset, 1);call write~init~int(82, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(73, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(84, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 4 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(75, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 41#L-1true havoc main_#res;havoc main_#t~ret40, main_~retValue_acc~6, main_~tmp~2;havoc main_~retValue_acc~6;havoc main_~tmp~2; 72#L76true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 53#L84true main_#t~ret40 := valid_product_#res;main_~tmp~2 := main_#t~ret40;havoc main_#t~ret40; 61#L473true assume 0 != main_~tmp~2; 26#L450true havoc test_#t~nondet26, test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 17#L868-1true [2021-08-27 16:07:22,847 INFO L793 eck$LassoCheckResult]: Loop: 17#L868-1true assume !false; 59#L254true assume test_~splverifierCounter~0 < 4; 19#L255true test_~tmp~1 := test_#t~nondet26;havoc test_#t~nondet26; 64#L263true assume !(0 != test_~tmp~1); 68#L263-1true test_~tmp___0~0 := test_#t~nondet27;havoc test_#t~nondet27; 65#L273true assume !(0 != test_~tmp___0~0); 63#L273-1true test_~tmp___2~0 := test_#t~nondet28;havoc test_#t~nondet28; 30#L283true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 9#L291-2true assume !(0 != ~pumpRunning~0); 52#L106true assume !(0 != ~systemActive~0); 48#L113true havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 45#L354-1true __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 10#L862true assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 17#L868-1true [2021-08-27 16:07:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:22,851 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:07:22,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:22,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252550548] [2021-08-27 16:07:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:22,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,047 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,154 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:23,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:23,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1680944970, now seen corresponding path program 1 times [2021-08-27 16:07:23,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:23,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459525794] [2021-08-27 16:07:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:23,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:07:23,216 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 16:07:23,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:07:23,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459525794] [2021-08-27 16:07:23,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459525794] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:07:23,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:07:23,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:07:23,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578142498] [2021-08-27 16:07:23,221 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:07:23,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:07:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:07:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:07:23,237 INFO L87 Difference]: Start difference. First operand has 72 states, 71 states have (on average 1.5211267605633803) internal successors, (108), 71 states have internal predecessors, (108), 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 16:07:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:07:23,268 INFO L93 Difference]: Finished difference Result 72 states and 98 transitions. [2021-08-27 16:07:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:07:23,270 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 98 transitions. [2021-08-27 16:07:23,276 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 43 [2021-08-27 16:07:23,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 65 states and 90 transitions. [2021-08-27 16:07:23,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2021-08-27 16:07:23,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2021-08-27 16:07:23,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 90 transitions. [2021-08-27 16:07:23,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:07:23,281 INFO L681 BuchiCegarLoop]: Abstraction has 65 states and 90 transitions. [2021-08-27 16:07:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 90 transitions. [2021-08-27 16:07:23,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-08-27 16:07:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 64 states have internal predecessors, (90), 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 16:07:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2021-08-27 16:07:23,303 INFO L704 BuchiCegarLoop]: Abstraction has 65 states and 90 transitions. [2021-08-27 16:07:23,304 INFO L587 BuchiCegarLoop]: Abstraction has 65 states and 90 transitions. [2021-08-27 16:07:23,304 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:07:23,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 90 transitions. [2021-08-27 16:07:23,306 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 43 [2021-08-27 16:07:23,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:23,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:23,307 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:23,307 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:23,307 INFO L791 eck$LassoCheckResult]: Stem: 214#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(13);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(77, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(101, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(116, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string35.base, #t~string35.offset, 1);call write~init~int(82, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(73, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(84, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 4 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(75, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 203#L-1 havoc main_#res;havoc main_#t~ret40, main_~retValue_acc~6, main_~tmp~2;havoc main_~retValue_acc~6;havoc main_~tmp~2; 204#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 212#L84 main_#t~ret40 := valid_product_#res;main_~tmp~2 := main_#t~ret40;havoc main_#t~ret40; 213#L473 assume 0 != main_~tmp~2; 188#L450 havoc test_#t~nondet26, test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 165#L868-1 [2021-08-27 16:07:23,308 INFO L793 eck$LassoCheckResult]: Loop: 165#L868-1 assume !false; 173#L254 assume test_~splverifierCounter~0 < 4; 175#L255 test_~tmp~1 := test_#t~nondet26;havoc test_#t~nondet26; 176#L263 assume !(0 != test_~tmp~1); 195#L263-1 test_~tmp___0~0 := test_#t~nondet27;havoc test_#t~nondet27; 217#L273 assume !(0 != test_~tmp___0~0); 182#L273-1 test_~tmp___2~0 := test_#t~nondet28;havoc test_#t~nondet28; 189#L283 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 167#L291-2 assume !(0 != ~pumpRunning~0); 157#L106 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~0;havoc processEnvironment_~tmp~0; 211#L138 assume !(0 != ~pumpRunning~0); 192#L113 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 207#L354-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 164#L862 assume 0 != __utac_acc__Specification3_spec__1_~tmp~6; 165#L868-1 [2021-08-27 16:07:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:23,308 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:07:23,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:23,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627582880] [2021-08-27 16:07:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:23,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,361 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,413 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:23,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:23,416 INFO L82 PathProgramCache]: Analyzing trace with hash -590214418, now seen corresponding path program 1 times [2021-08-27 16:07:23,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:23,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002035597] [2021-08-27 16:07:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:23,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,421 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,427 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1012825108, now seen corresponding path program 1 times [2021-08-27 16:07:23,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:23,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176334943] [2021-08-27 16:07:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:23,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:07:23,484 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 16:07:23,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:07:23,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176334943] [2021-08-27 16:07:23,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176334943] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:07:23,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:07:23,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:07:23,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919855778] [2021-08-27 16:07:23,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:07:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:07:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:07:23,625 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. cyclomatic complexity: 27 Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:07:23,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:07:23,750 INFO L93 Difference]: Finished difference Result 211 states and 300 transitions. [2021-08-27 16:07:23,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:07:23,750 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 211 states and 300 transitions. [2021-08-27 16:07:23,753 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 145 [2021-08-27 16:07:23,757 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 211 states to 211 states and 300 transitions. [2021-08-27 16:07:23,757 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 211 [2021-08-27 16:07:23,759 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2021-08-27 16:07:23,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 211 states and 300 transitions. [2021-08-27 16:07:23,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:07:23,762 INFO L681 BuchiCegarLoop]: Abstraction has 211 states and 300 transitions. [2021-08-27 16:07:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states and 300 transitions. [2021-08-27 16:07:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 124. [2021-08-27 16:07:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 124 states have (on average 1.3709677419354838) internal successors, (170), 123 states have internal predecessors, (170), 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 16:07:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2021-08-27 16:07:23,776 INFO L704 BuchiCegarLoop]: Abstraction has 124 states and 170 transitions. [2021-08-27 16:07:23,776 INFO L587 BuchiCegarLoop]: Abstraction has 124 states and 170 transitions. [2021-08-27 16:07:23,776 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:07:23,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 124 states and 170 transitions. [2021-08-27 16:07:23,778 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 86 [2021-08-27 16:07:23,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:07:23,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:07:23,779 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:07:23,779 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:07:23,779 INFO L791 eck$LassoCheckResult]: Stem: 525#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string13.base, #t~string13.offset, 1);call write~init~int(110, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 2 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(102, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 3 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string17.base, #t~string17.offset, 1);call write~init~int(80, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(117, #t~string17.base, 2 + #t~string17.offset, 1);call write~init~int(109, #t~string17.base, 3 + #t~string17.offset, 1);call write~init~int(112, #t~string17.base, 4 + #t~string17.offset, 1);call write~init~int(58, #t~string17.base, 5 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 6 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string23.base, #t~string23.offset, 1);call write~init~int(32, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 2 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string25.base, #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 1 + #t~string25.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(13);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(77, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(101, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(116, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(104, #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(5);call write~init~int(67, #t~string35.base, #t~string35.offset, 1);call write~init~int(82, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(73, #t~string35.base, 2 + #t~string35.offset, 1);call write~init~int(84, #t~string35.base, 3 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 4 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(75, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 2 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 1 + #t~string39.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(30);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(25);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 508#L-1 havoc main_#res;havoc main_#t~ret40, main_~retValue_acc~6, main_~tmp~2;havoc main_~retValue_acc~6;havoc main_~tmp~2; 509#L76 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 523#L84 main_#t~ret40 := valid_product_#res;main_~tmp~2 := main_#t~ret40;havoc main_#t~ret40; 524#L473 assume 0 != main_~tmp~2; 484#L450 havoc test_#t~nondet26, test_#t~nondet27, test_#t~nondet28, test_#t~nondet29, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 467#L868-1 [2021-08-27 16:07:23,780 INFO L793 eck$LassoCheckResult]: Loop: 467#L868-1 assume !false; 468#L254 assume test_~splverifierCounter~0 < 4; 527#L255 test_~tmp~1 := test_#t~nondet26;havoc test_#t~nondet26; 570#L263 assume !(0 != test_~tmp~1); 532#L263-1 test_~tmp___0~0 := test_#t~nondet27;havoc test_#t~nondet27; 533#L273 assume !(0 != test_~tmp___0~0); 529#L273-1 test_~tmp___2~0 := test_#t~nondet28;havoc test_#t~nondet28; 490#L283 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 457#L291-2 assume !(0 != ~pumpRunning~0); 448#L106 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret8, processEnvironment_~tmp~0;havoc processEnvironment_~tmp~0; 562#L138 assume !(0 != ~pumpRunning~0); 560#L113 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~6, __utac_acc__Specification3_spec__1_~tmp___0~1, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~6;havoc __utac_acc__Specification3_spec__1_~tmp___0~1;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 559#L354-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~6 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 458#L862 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~6);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~5;havoc getWaterLevel_~retValue_acc~5;getWaterLevel_~retValue_acc~5 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~5; 459#L386 __utac_acc__Specification3_spec__1_#t~ret77 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~1 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 487#L868 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~1); 467#L868-1 [2021-08-27 16:07:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:23,780 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:07:23,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:23,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142706099] [2021-08-27 16:07:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:23,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,822 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:23,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:23,865 INFO L82 PathProgramCache]: Analyzing trace with hash -260366912, now seen corresponding path program 1 times [2021-08-27 16:07:23,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:23,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106527466] [2021-08-27 16:07:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:23,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,874 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,878 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:23,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:07:23,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1632641690, now seen corresponding path program 1 times [2021-08-27 16:07:23,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:07:23,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686352986] [2021-08-27 16:07:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:07:23,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:07:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,902 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:07:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:07:23,927 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:02,186 WARN L207 SmtUtils]: Spent 38.12 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:08:41,601 WARN L207 SmtUtils]: Spent 19.21 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:08:41,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:08:41 BoogieIcfgContainer [2021-08-27 16:08:41,719 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:08:41,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:08:41,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:08:41,719 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:08:41,724 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:07:22" (3/4) ... [2021-08-27 16:08:41,725 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:08:41,779 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:08:41,779 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:08:41,779 INFO L168 Benchmark]: Toolchain (without parser) took 80087.70 ms. Allocated memory was 60.8 MB in the beginning and 146.8 MB in the end (delta: 86.0 MB). Free memory was 39.2 MB in the beginning and 90.4 MB in the end (delta: -51.3 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:08:41,780 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.1 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:08:41,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.95 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 40.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:08:41,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.06 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 37.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:08:41,781 INFO L168 Benchmark]: Boogie Preprocessor took 21.97 ms. Allocated memory is still 60.8 MB. Free memory was 37.0 MB in the beginning and 35.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:08:41,781 INFO L168 Benchmark]: RCFGBuilder took 646.23 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 34.9 MB in the beginning and 49.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:08:41,781 INFO L168 Benchmark]: BuchiAutomizer took 78964.05 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 49.2 MB in the beginning and 92.5 MB in the end (delta: -43.3 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:08:41,782 INFO L168 Benchmark]: Witness Printer took 59.71 ms. Allocated memory is still 146.8 MB. Free memory was 92.5 MB in the beginning and 90.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:08:41,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 43.1 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.95 ms. Allocated memory is still 60.8 MB. Free memory was 39.0 MB in the beginning and 40.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.06 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 37.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.97 ms. Allocated memory is still 60.8 MB. Free memory was 37.0 MB in the beginning and 35.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 646.23 ms. Allocated memory was 60.8 MB in the beginning and 83.9 MB in the end (delta: 23.1 MB). Free memory was 34.9 MB in the beginning and 49.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 78964.05 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 49.2 MB in the beginning and 92.5 MB in the end (delta: -43.3 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.1 GB. * Witness Printer took 59.71 ms. Allocated memory is still 146.8 MB. Free memory was 92.5 MB in the beginning and 90.4 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 5 locations. The remainder module has 124 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 78.9s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 78.6s. Construction of modules took 0.0s. 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 27.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 87 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 124 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 205 SDtfs, 399 SDslu, 325 SDs, 0 SdLazy, 82 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 253]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=30650} State at position 1 is {NULL=30666, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c2a99ed=0, NULL=30650, NULL=30669, retValue_acc=0, NULL=0, NULL=0, NULL=30677, NULL=30659, NULL=30657, NULL=30678, methaneLevelCritical=0, NULL=30674, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14cbbfdb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38b1ec8=0, NULL=0, NULL=0, NULL=30658, NULL=30673, tmp___1=0, NULL=30655, NULL=0, NULL=0, NULL=30660, cleanupTimeShifts=4, tmp=0, NULL=30671, NULL=30654, NULL=30667, tmp___0=1, tmp=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=30675, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@83558d2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ee32eb2=0, retValue_acc=0, tmp___0=0, NULL=30651, NULL=30662, \result=1, head=0, pumpRunning=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43283bb7=0, NULL=30670, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45140b09=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2edb0f3e=0, NULL=0, tmp=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f94423c=0, NULL=0, NULL=0, NULL=30672, NULL=0, NULL=30661, NULL=0, NULL=0, NULL=0, NULL=30663, retValue_acc=1, tmp___2=76, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=30656, NULL=30664, NULL=30653, tmp=0, NULL=30676, tmp___1=0, head=0, NULL=30668, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=30652, NULL=30665} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L98] int pumpRunning = 0; [L99] int systemActive = 1; [L311] int waterLevel = 1; [L312] int methaneLevelCritical = 0; [L391] int cleanupTimeShifts = 4; [L656] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L464] int retValue_acc ; [L465] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L471] tmp = valid_product() [L473] COND TRUE \read(tmp) [L244] int splverifierCounter ; [L245] int tmp ; [L246] int tmp___0 ; [L247] int tmp___1 ; [L248] int tmp___2 ; [L251] splverifierCounter = 0 Loop: [L253] COND TRUE 1 [L255] COND TRUE splverifierCounter < 4 [L261] tmp = __VERIFIER_nondet_int() [L263] COND FALSE !(\read(tmp)) [L271] tmp___0 = __VERIFIER_nondet_int() [L273] COND FALSE !(\read(tmp___0)) [L281] tmp___2 = __VERIFIER_nondet_int() [L283] COND TRUE \read(tmp___2) [L235] systemActive = 1 [L106] COND FALSE !(\read(pumpRunning)) [L113] COND TRUE \read(systemActive) [L135] int tmp ; [L138] COND FALSE !(\read(pumpRunning)) [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L350] int retValue_acc ; [L353] retValue_acc = methaneLevelCritical [L354] return (retValue_acc); [L860] tmp = isMethaneLevelCritical() [L862] COND FALSE !(\read(tmp)) [L382] int retValue_acc ; [L385] retValue_acc = waterLevel [L386] return (retValue_acc); [L866] tmp___0 = getWaterLevel() [L868] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:08:41,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...