./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product17.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_product17.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 93fd59a78b989bd327b1ea5bb76e8d96f458ffc8 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:08:31,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:08:31,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:08:31,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:08:31,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:08:31,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:08:31,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:08:31,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:08:31,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:08:31,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:08:31,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:08:31,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:08:31,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:08:31,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:08:31,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:08:31,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:08:31,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:08:31,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:08:31,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:08:31,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:08:31,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:08:31,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:08:31,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:08:31,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:08:31,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:08:31,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:08:31,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:08:31,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:08:31,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:08:31,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:08:31,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:08:31,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:08:31,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:08:31,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:08:31,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:08:31,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:08:31,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:08:31,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:08:31,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:08:31,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:08:31,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:08:31,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:08:31,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:08:31,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:08:31,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:08:31,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:08:31,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:08:31,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:08:31,692 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:08:31,693 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:08:31,693 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:08:31,693 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:08:31,694 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:08:31,694 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:08:31,694 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:08:31,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:08:31,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:08:31,695 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:08:31,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:08:31,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:08:31,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:08:31,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:08:31,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:08:31,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:08:31,696 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:08:31,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:08:31,696 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:08:31,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:08:31,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:08:31,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:08:31,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:08:31,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:08:31,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:08:31,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:08:31,699 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:08:31,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93fd59a78b989bd327b1ea5bb76e8d96f458ffc8 [2021-08-27 16:08:31,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:08:32,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:08:32,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:08:32,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:08:32,020 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:08:32,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product17.cil.c [2021-08-27 16:08:32,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6c203dc/cf12a8f72f4e47e4890f47b420329989/FLAGa4d70cee4 [2021-08-27 16:08:32,568 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:08:32,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product17.cil.c [2021-08-27 16:08:32,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6c203dc/cf12a8f72f4e47e4890f47b420329989/FLAGa4d70cee4 [2021-08-27 16:08:33,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6c203dc/cf12a8f72f4e47e4890f47b420329989 [2021-08-27 16:08:33,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:08:33,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:08:33,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:08:33,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:08:33,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:08:33,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71454de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33, skipping insertion in model container [2021-08-27 16:08:33,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:08:33,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:08:33,406 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_product17.cil.c[12347,12360] [2021-08-27 16:08:33,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:08:33,456 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:08:33,516 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_product17.cil.c[12347,12360] [2021-08-27 16:08:33,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:08:33,557 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:08:33,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33 WrapperNode [2021-08-27 16:08:33,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:08:33,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:08:33,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:08:33,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:08:33,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:08:33,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:08:33,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:08:33,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:08:33,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:08:33,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:08:33,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:08:33,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:08:33,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (1/1) ... [2021-08-27 16:08:33,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:08:33,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:08:33,712 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 16:08:33,720 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 16:08:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:08:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:08:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:08:33,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:08:34,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:08:34,406 INFO L299 CfgBuilder]: Removed 102 assume(true) statements. [2021-08-27 16:08:34,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:08:34 BoogieIcfgContainer [2021-08-27 16:08:34,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:08:34,409 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:08:34,410 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:08:34,413 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:08:34,414 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:08:34,415 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:08:33" (1/3) ... [2021-08-27 16:08:34,415 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@349101b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:08:34, skipping insertion in model container [2021-08-27 16:08:34,416 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:08:34,416 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:33" (2/3) ... [2021-08-27 16:08:34,416 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@349101b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:08:34, skipping insertion in model container [2021-08-27 16:08:34,417 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:08:34,417 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:08:34" (3/3) ... [2021-08-27 16:08:34,418 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2021-08-27 16:08:34,458 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:08:34,458 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:08:34,458 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:08:34,458 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:08:34,458 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:08:34,459 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:08:34,459 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:08:34,459 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:08:34,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 77 states have internal predecessors, (117), 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 16:08:34,498 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-08-27 16:08:34,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:34,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:34,505 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:34,505 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:34,505 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:08:34,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 77 states have internal predecessors, (117), 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 16:08:34,515 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-08-27 16:08:34,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:34,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:34,516 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:34,516 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:34,519 INFO L791 eck$LassoCheckResult]: Stem: 62#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 52#L-1true havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 14#L858true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 17#L866true main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 15#L822true assume 0 != main_~tmp~6; 30#L796true havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 31#L886-1true [2021-08-27 16:08:34,520 INFO L793 eck$LassoCheckResult]: Loop: 31#L886-1true assume !false; 40#L526true assume test_~splverifierCounter~0 < 4; 38#L527true test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 32#L535true assume !(0 != test_~tmp~3); 28#L535-1true test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 34#L545true assume !(0 != test_~tmp___0~0); 73#L545-1true test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 68#L555true assume 0 != test_~tmp___2~0; 50#L561-2true assume !(0 != ~pumpRunning~0); 24#L592true assume !(0 != ~systemActive~0); 70#L599true havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 51#L458true __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 45#L880true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 31#L886-1true [2021-08-27 16:08:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:34,525 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:08:34,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:34,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395454862] [2021-08-27 16:08:34,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:34,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:34,769 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:34,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:34,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1681683787, now seen corresponding path program 1 times [2021-08-27 16:08:34,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:34,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846342945] [2021-08-27 16:08:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:34,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:34,874 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:34,881 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:34,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:34,882 INFO L82 PathProgramCache]: Analyzing trace with hash 32595151, now seen corresponding path program 1 times [2021-08-27 16:08:34,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:34,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255522847] [2021-08-27 16:08:34,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:34,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:08:34,981 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 16:08:34,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:08:34,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255522847] [2021-08-27 16:08:34,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255522847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:08:34,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:08:34,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:08:34,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598850586] [2021-08-27 16:08:35,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:08:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:08:35,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:08:35,139 INFO L87 Difference]: Start difference. First operand has 78 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 77 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:08:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:08:35,325 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2021-08-27 16:08:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:08:35,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 106 transitions. [2021-08-27 16:08:35,333 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:08:35,337 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 71 states and 99 transitions. [2021-08-27 16:08:35,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2021-08-27 16:08:35,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2021-08-27 16:08:35,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 99 transitions. [2021-08-27 16:08:35,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:08:35,339 INFO L681 BuchiCegarLoop]: Abstraction has 71 states and 99 transitions. [2021-08-27 16:08:35,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 99 transitions. [2021-08-27 16:08:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-27 16:08:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 70 states have internal predecessors, (99), 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 16:08:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2021-08-27 16:08:35,375 INFO L704 BuchiCegarLoop]: Abstraction has 71 states and 99 transitions. [2021-08-27 16:08:35,375 INFO L587 BuchiCegarLoop]: Abstraction has 71 states and 99 transitions. [2021-08-27 16:08:35,375 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:08:35,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 99 transitions. [2021-08-27 16:08:35,380 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:08:35,380 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:35,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:35,381 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:35,381 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:35,382 INFO L791 eck$LassoCheckResult]: Stem: 237#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 233#L-1 havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 192#L858 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 193#L866 main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 194#L822 assume 0 != main_~tmp~6; 195#L796 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 217#L886-1 [2021-08-27 16:08:35,382 INFO L793 eck$LassoCheckResult]: Loop: 217#L886-1 assume !false; 218#L526 assume test_~splverifierCounter~0 < 4; 225#L527 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 219#L535 assume !(0 != test_~tmp~3); 175#L535-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 214#L545 assume !(0 != test_~tmp___0~0); 221#L545-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 243#L555 assume 0 != test_~tmp___2~0; 179#L561-2 assume !(0 != ~pumpRunning~0); 209#L592 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 210#L624 assume !(0 != ~pumpRunning~0); 235#L599 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 232#L458 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 229#L880 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 217#L886-1 [2021-08-27 16:08:35,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:35,383 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:08:35,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:35,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782710757] [2021-08-27 16:08:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:35,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:35,449 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:35,524 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:35,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:35,527 INFO L82 PathProgramCache]: Analyzing trace with hash -619582386, now seen corresponding path program 1 times [2021-08-27 16:08:35,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:35,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142482442] [2021-08-27 16:08:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:35,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:35,535 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:35,540 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:35,545 INFO L82 PathProgramCache]: Analyzing trace with hash 983457140, now seen corresponding path program 1 times [2021-08-27 16:08:35,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:35,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413306872] [2021-08-27 16:08:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:35,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:08:35,616 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 16:08:35,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:08:35,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413306872] [2021-08-27 16:08:35,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413306872] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:08:35,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:08:35,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:08:35,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832250283] [2021-08-27 16:08:35,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:08:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:08:35,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:08:35,754 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. cyclomatic complexity: 30 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 16:08:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:08:35,867 INFO L93 Difference]: Finished difference Result 241 states and 345 transitions. [2021-08-27 16:08:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:08:35,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 241 states and 345 transitions. [2021-08-27 16:08:35,877 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2021-08-27 16:08:35,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 241 states to 241 states and 345 transitions. [2021-08-27 16:08:35,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 241 [2021-08-27 16:08:35,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 241 [2021-08-27 16:08:35,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 241 states and 345 transitions. [2021-08-27 16:08:35,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:08:35,890 INFO L681 BuchiCegarLoop]: Abstraction has 241 states and 345 transitions. [2021-08-27 16:08:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states and 345 transitions. [2021-08-27 16:08:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 136. [2021-08-27 16:08:35,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 135 states have internal predecessors, (188), 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 16:08:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 188 transitions. [2021-08-27 16:08:35,907 INFO L704 BuchiCegarLoop]: Abstraction has 136 states and 188 transitions. [2021-08-27 16:08:35,907 INFO L587 BuchiCegarLoop]: Abstraction has 136 states and 188 transitions. [2021-08-27 16:08:35,907 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:08:35,907 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 136 states and 188 transitions. [2021-08-27 16:08:35,908 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 94 [2021-08-27 16:08:35,909 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:35,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:35,909 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:35,909 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 16:08:35,910 INFO L791 eck$LassoCheckResult]: Stem: 579#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 570#L-1 havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 522#L858 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 523#L866 main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 524#L822 assume 0 != main_~tmp~6; 525#L796 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 550#L886-1 [2021-08-27 16:08:35,910 INFO L793 eck$LassoCheckResult]: Loop: 550#L886-1 assume !false; 551#L526 assume test_~splverifierCounter~0 < 4; 557#L527 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 552#L535 assume !(0 != test_~tmp~3); 505#L535-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 547#L545 assume !(0 != test_~tmp___0~0); 554#L545-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 585#L555 assume 0 != test_~tmp___2~0; 509#L561-2 assume !(0 != ~pumpRunning~0); 541#L592 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 542#L624 assume !(0 != ~pumpRunning~0); 611#L599 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 568#L458 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 569#L880 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 548#L490 __utac_acc__Specification3_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 549#L886 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 550#L886-1 [2021-08-27 16:08:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:35,914 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:08:35,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:35,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325801088] [2021-08-27 16:08:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:35,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:35,954 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:36,008 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:36,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1581787104, now seen corresponding path program 1 times [2021-08-27 16:08:36,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:36,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236920697] [2021-08-27 16:08:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:36,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:36,015 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:36,019 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:36,020 INFO L82 PathProgramCache]: Analyzing trace with hash 209512326, now seen corresponding path program 1 times [2021-08-27 16:08:36,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:36,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683704224] [2021-08-27 16:08:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:36,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:36,071 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:36,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:09:17,612 WARN L207 SmtUtils]: Spent 41.35 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:09:59,111 WARN L207 SmtUtils]: Spent 20.37 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:09:59,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:09:59 BoogieIcfgContainer [2021-08-27 16:09:59,302 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:09:59,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:09:59,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:09:59,303 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:09:59,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:08:34" (3/4) ... [2021-08-27 16:09:59,325 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:09:59,389 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:09:59,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:09:59,390 INFO L168 Benchmark]: Toolchain (without parser) took 86328.15 ms. Allocated memory was 56.6 MB in the beginning and 107.0 MB in the end (delta: 50.3 MB). Free memory was 34.0 MB in the beginning and 45.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,390 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:09:59,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.77 ms. Allocated memory is still 56.6 MB. Free memory was 33.8 MB in the beginning and 31.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.47 ms. Allocated memory is still 56.6 MB. Free memory was 31.7 MB in the beginning and 28.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,391 INFO L168 Benchmark]: Boogie Preprocessor took 48.79 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 26.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,391 INFO L168 Benchmark]: RCFGBuilder took 719.86 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 44.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,392 INFO L168 Benchmark]: BuchiAutomizer took 84892.74 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 44.9 MB in the beginning and 48.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 66.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,392 INFO L168 Benchmark]: Witness Printer took 86.39 ms. Allocated memory is still 107.0 MB. Free memory was 48.0 MB in the beginning and 45.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.5 MB in the beginning and 38.5 MB in the end (delta: 29.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 495.77 ms. Allocated memory is still 56.6 MB. Free memory was 33.8 MB in the beginning and 31.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.47 ms. Allocated memory is still 56.6 MB. Free memory was 31.7 MB in the beginning and 28.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.79 ms. Allocated memory is still 56.6 MB. Free memory was 28.7 MB in the beginning and 26.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 719.86 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 44.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 84892.74 ms. Allocated memory was 69.2 MB in the beginning and 107.0 MB in the end (delta: 37.7 MB). Free memory was 44.9 MB in the beginning and 48.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 66.6 MB. Max. memory is 16.1 GB. * Witness Printer took 86.39 ms. Allocated memory is still 107.0 MB. Free memory was 48.0 MB in the beginning and 45.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 6 locations. The remainder module has 136 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 84.8s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 84.3s. 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 38.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 105 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 136 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 236 SDtfs, 672 SDslu, 402 SDs, 0 SdLazy, 51 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 155.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 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: 525]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=22590} State at position 1 is {NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7dcf1ab1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c55e937=0, NULL=22590, NULL=22594, NULL=0, NULL=0, NULL=22608, NULL=22600, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45116d29=65, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79982c9f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35b29be0=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6109a22f=0, NULL=22604, retValue_acc=1, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8c8f9c6=0, NULL=0, NULL=0, NULL=0, tmp___1=0, NULL=22613, NULL=0, NULL=0, NULL=22616, NULL=22601, NULL=22603, cleanupTimeShifts=4, NULL=22606, NULL=22595, NULL=22612, tmp=0, tmp___0=1, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=22618, \result=1, NULL=0, NULL=0, NULL=0, retValue_acc=0, NULL=22611, tmp___0=0, NULL=22592, \result=1, head=0, pumpRunning=0, NULL=22591, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=22617, NULL=22599, NULL=22605, NULL=0, NULL=0, NULL=22598, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b1278a7=0, tmp___2=65, retValue_acc=1, NULL=22607, NULL=22597, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=22593, NULL=22596, NULL=22602, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42210794=0, tmp___1=0, head=0, tmp=0, NULL=0, NULL=0, NULL=22615, NULL=0, NULL=0, NULL=22610, NULL=22609, NULL=22614} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L584] int pumpRunning = 0; [L585] int systemActive = 1; [L737] int cleanupTimeShifts = 4; [L813] int retValue_acc ; [L814] int tmp ; [L862] int retValue_acc ; [L865] retValue_acc = 1 [L866] return (retValue_acc); [L820] tmp = valid_product() [L822] COND TRUE \read(tmp) [L516] int splverifierCounter ; [L517] int tmp ; [L518] int tmp___0 ; [L519] int tmp___1 ; [L520] int tmp___2 ; [L523] splverifierCounter = 0 Loop: [L525] COND TRUE 1 [L527] COND TRUE splverifierCounter < 4 [L533] tmp = __VERIFIER_nondet_int() [L535] COND FALSE !(\read(tmp)) [L543] tmp___0 = __VERIFIER_nondet_int() [L545] COND FALSE !(\read(tmp___0)) [L553] tmp___2 = __VERIFIER_nondet_int() [L555] COND TRUE \read(tmp___2) [L592] COND FALSE !(\read(pumpRunning)) [L599] COND TRUE \read(systemActive) [L621] int tmp ; [L624] COND FALSE !(\read(pumpRunning)) [L872] int tmp ; [L873] int tmp___0 ; [L874] int tmp___1 ; [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L878] tmp = isMethaneLevelCritical() [L880] COND FALSE !(\read(tmp)) [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L884] tmp___0 = getWaterLevel() [L886] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:09:59,447 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...