./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5f050ff3359f4c5814c7559cf768b732b843fd60 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:11:41,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:11:41,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:11:41,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:11:41,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:11:41,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:11:41,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:11:41,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:11:41,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:11:41,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:11:41,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:11:41,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:11:41,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:11:41,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:11:41,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:11:41,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:11:41,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:11:41,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:11:41,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:11:41,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:11:41,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:11:41,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:11:41,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:11:41,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:11:41,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:11:41,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:11:41,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:11:41,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:11:41,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:11:41,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:11:41,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:11:41,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:11:41,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:11:41,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:11:41,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:11:41,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:11:41,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:11:41,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:11:41,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:11:41,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:11:41,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:11:41,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:11:41,640 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:11:41,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:11:41,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:11:41,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:11:41,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:11:41,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:11:41,644 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:11:41,644 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:11:41,644 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:11:41,645 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:11:41,645 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:11:41,646 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:11:41,646 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:11:41,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:11:41,646 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:11:41,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:11:41,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:11:41,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:11:41,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:11:41,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:11:41,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:11:41,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:11:41,648 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:11:41,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:11:41,648 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:11:41,648 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:11:41,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:11:41,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:11:41,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:11:41,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:11:41,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:11:41,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:11:41,651 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:11:41,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f050ff3359f4c5814c7559cf768b732b843fd60 [2021-08-27 16:11:41,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:11:42,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:11:42,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:11:42,010 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:11:42,011 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:11:42,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c [2021-08-27 16:11:42,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fa12a64/1ea0b6bf25964e38a674ce92b29cb1cc/FLAG8cfb43023 [2021-08-27 16:11:42,506 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:11:42,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product48.cil.c [2021-08-27 16:11:42,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fa12a64/1ea0b6bf25964e38a674ce92b29cb1cc/FLAG8cfb43023 [2021-08-27 16:11:42,868 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58fa12a64/1ea0b6bf25964e38a674ce92b29cb1cc [2021-08-27 16:11:42,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:11:42,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:11:42,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:11:42,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:11:42,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:11:42,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:11:42" (1/1) ... [2021-08-27 16:11:42,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b37a354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:42, skipping insertion in model container [2021-08-27 16:11:42,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:11:42" (1/1) ... [2021-08-27 16:11:42,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:11:42,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:11:43,109 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_product48.cil.c[1281,1294] [2021-08-27 16:11:43,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:11:43,287 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:11:43,302 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_product48.cil.c[1281,1294] [2021-08-27 16:11:43,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:11:43,391 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:11:43,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43 WrapperNode [2021-08-27 16:11:43,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:11:43,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:11:43,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:11:43,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:11:43,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:11:43,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:11:43,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:11:43,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:11:43,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:11:43,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:11:43,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:11:43,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:11:43,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (1/1) ... [2021-08-27 16:11:43,572 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:11:43,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:11:43,592 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 16:11:43,622 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 16:11:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:11:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:11:43,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:11:43,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:11:44,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:11:44,611 INFO L299 CfgBuilder]: Removed 204 assume(true) statements. [2021-08-27 16:11:44,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:11:44 BoogieIcfgContainer [2021-08-27 16:11:44,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:11:44,614 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:11:44,614 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:11:44,616 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:11:44,617 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:11:44,617 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:11:42" (1/3) ... [2021-08-27 16:11:44,618 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@520a4401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:11:44, skipping insertion in model container [2021-08-27 16:11:44,618 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:11:44,618 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:11:43" (2/3) ... [2021-08-27 16:11:44,619 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@520a4401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:11:44, skipping insertion in model container [2021-08-27 16:11:44,619 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:11:44,619 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:11:44" (3/3) ... [2021-08-27 16:11:44,620 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product48.cil.c [2021-08-27 16:11:44,663 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:11:44,663 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:11:44,663 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:11:44,663 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:11:44,663 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:11:44,663 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:11:44,663 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:11:44,663 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:11:44,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:11:44,697 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:11:44,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:44,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:44,704 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:44,704 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:44,704 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:11:44,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:11:44,711 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:11:44,711 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:44,711 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:44,712 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:44,712 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:44,716 INFO L791 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 46#L-1true havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 67#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; 122#L84true main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 55#L532true assume 0 != main_~tmp~5; 38#L508true havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 125#L107-1true [2021-08-27 16:11:44,717 INFO L793 eck$LassoCheckResult]: Loop: 125#L107-1true assume !false; 134#L557true assume test_~splverifierCounter~0 < 4; 132#L558true test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 116#L566true assume !(0 != test_~tmp~6); 62#L566-1true test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 90#L576true assume !(0 != test_~tmp___0~2); 18#L576-1true test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 107#L586true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 45#L594-1true assume !(0 != ~pumpRunning~0); 32#L238true assume !(0 != ~systemActive~0); 34#L245true havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 11#L174-3true __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 124#L101true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 125#L107-1true [2021-08-27 16:11:44,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:44,722 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:11:44,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:44,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749351317] [2021-08-27 16:11:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:44,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:44,906 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:45,058 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1669770369, now seen corresponding path program 1 times [2021-08-27 16:11:45,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:45,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823374662] [2021-08-27 16:11:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:45,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:11:45,136 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 16:11:45,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:11:45,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823374662] [2021-08-27 16:11:45,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823374662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:11:45,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:11:45,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:11:45,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886117801] [2021-08-27 16:11:45,142 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:11:45,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:11:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:11:45,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:11:45,155 INFO L87 Difference]: Start difference. First operand has 134 states, 133 states have (on average 1.5112781954887218) internal successors, (201), 133 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:11:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:11:45,231 INFO L93 Difference]: Finished difference Result 262 states and 378 transitions. [2021-08-27 16:11:45,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:11:45,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 262 states and 378 transitions. [2021-08-27 16:11:45,239 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 170 [2021-08-27 16:11:45,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 262 states to 248 states and 363 transitions. [2021-08-27 16:11:45,246 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 248 [2021-08-27 16:11:45,247 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 248 [2021-08-27 16:11:45,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 248 states and 363 transitions. [2021-08-27 16:11:45,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:11:45,249 INFO L681 BuchiCegarLoop]: Abstraction has 248 states and 363 transitions. [2021-08-27 16:11:45,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states and 363 transitions. [2021-08-27 16:11:45,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2021-08-27 16:11:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 246 states have (on average 1.4634146341463414) internal successors, (360), 245 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:11:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 360 transitions. [2021-08-27 16:11:45,288 INFO L704 BuchiCegarLoop]: Abstraction has 246 states and 360 transitions. [2021-08-27 16:11:45,288 INFO L587 BuchiCegarLoop]: Abstraction has 246 states and 360 transitions. [2021-08-27 16:11:45,288 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:11:45,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 246 states and 360 transitions. [2021-08-27 16:11:45,291 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2021-08-27 16:11:45,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:45,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:45,292 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:45,292 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:45,293 INFO L791 eck$LassoCheckResult]: Stem: 538#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 478#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 479#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; 499#L84 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 488#L532 assume 0 != main_~tmp~5; 465#L508 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 466#L107-1 [2021-08-27 16:11:45,293 INFO L793 eck$LassoCheckResult]: Loop: 466#L107-1 assume !false; 598#L557 assume test_~splverifierCounter~0 < 4; 599#L558 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 637#L566 assume !(0 != test_~tmp~6); 635#L566-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 634#L576 assume !(0 != test_~tmp___0~2); 632#L576-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 631#L586 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 530#L594-1 assume !(0 != ~pumpRunning~0); 628#L238 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 627#L296 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 607#L270-1 assume !(0 == ~pumpRunning~0); 606#L245 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 604#L174-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 603#L101 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 466#L107-1 [2021-08-27 16:11:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:45,294 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:11:45,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:45,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669845779] [2021-08-27 16:11:45,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:45,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:45,358 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:45,446 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:45,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:45,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1411824415, now seen corresponding path program 1 times [2021-08-27 16:11:45,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:45,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725361207] [2021-08-27 16:11:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:45,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:11:45,485 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 16:11:45,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:11:45,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725361207] [2021-08-27 16:11:45,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725361207] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:11:45,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:11:45,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:11:45,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380688386] [2021-08-27 16:11:45,489 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:11:45,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:11:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:11:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:11:45,490 INFO L87 Difference]: Start difference. First operand 246 states and 360 transitions. cyclomatic complexity: 117 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:11:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:11:45,653 INFO L93 Difference]: Finished difference Result 341 states and 478 transitions. [2021-08-27 16:11:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:11:45,655 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 478 transitions. [2021-08-27 16:11:45,659 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-08-27 16:11:45,662 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 341 states and 478 transitions. [2021-08-27 16:11:45,662 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 341 [2021-08-27 16:11:45,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 341 [2021-08-27 16:11:45,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 341 states and 478 transitions. [2021-08-27 16:11:45,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:11:45,665 INFO L681 BuchiCegarLoop]: Abstraction has 341 states and 478 transitions. [2021-08-27 16:11:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states and 478 transitions. [2021-08-27 16:11:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-08-27 16:11:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 341 states have (on average 1.401759530791789) internal successors, (478), 340 states have internal predecessors, (478), 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 16:11:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 478 transitions. [2021-08-27 16:11:45,680 INFO L704 BuchiCegarLoop]: Abstraction has 341 states and 478 transitions. [2021-08-27 16:11:45,680 INFO L587 BuchiCegarLoop]: Abstraction has 341 states and 478 transitions. [2021-08-27 16:11:45,680 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:11:45,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 341 states and 478 transitions. [2021-08-27 16:11:45,682 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 239 [2021-08-27 16:11:45,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:45,682 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:45,683 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:45,683 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:45,683 INFO L791 eck$LassoCheckResult]: Stem: 1144#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1070#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 1071#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; 1099#L84 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 1081#L532 assume 0 != main_~tmp~5; 1058#L508 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1059#L107-1 [2021-08-27 16:11:45,684 INFO L793 eck$LassoCheckResult]: Loop: 1059#L107-1 assume !false; 1175#L557 assume test_~splverifierCounter~0 < 4; 1170#L558 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 1171#L566 assume !(0 != test_~tmp~6); 1165#L566-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 1166#L576 assume !(0 != test_~tmp___0~2); 1160#L576-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 1161#L586 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1069#L594-1 assume !(0 != ~pumpRunning~0); 1050#L238 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 1051#L296 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 1226#L270-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1225#L214-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1224#L219-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 1223#L415-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1222#L415-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 1221#L421-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 1220#L274-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 1053#L245 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1182#L174-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 1183#L101 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 1059#L107-1 [2021-08-27 16:11:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:45,685 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:11:45,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:45,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084415585] [2021-08-27 16:11:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:45,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:45,721 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:45,779 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:45,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:45,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1301686415, now seen corresponding path program 1 times [2021-08-27 16:11:45,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:45,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566634064] [2021-08-27 16:11:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:45,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:11:45,833 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 16:11:45,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:11:45,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566634064] [2021-08-27 16:11:45,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566634064] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:11:45,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:11:45,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:11:45,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244973256] [2021-08-27 16:11:45,835 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:11:45,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:11:45,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:11:45,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:11:45,842 INFO L87 Difference]: Start difference. First operand 341 states and 478 transitions. cyclomatic complexity: 140 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:11:45,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:11:46,000 INFO L93 Difference]: Finished difference Result 963 states and 1326 transitions. [2021-08-27 16:11:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:11:46,001 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 963 states and 1326 transitions. [2021-08-27 16:11:46,016 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 685 [2021-08-27 16:11:46,023 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 963 states to 963 states and 1326 transitions. [2021-08-27 16:11:46,024 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 963 [2021-08-27 16:11:46,026 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 963 [2021-08-27 16:11:46,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 963 states and 1326 transitions. [2021-08-27 16:11:46,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:11:46,033 INFO L681 BuchiCegarLoop]: Abstraction has 963 states and 1326 transitions. [2021-08-27 16:11:46,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states and 1326 transitions. [2021-08-27 16:11:46,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 365. [2021-08-27 16:11:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 365 states have (on average 1.3753424657534246) internal successors, (502), 364 states have internal predecessors, (502), 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 16:11:46,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 502 transitions. [2021-08-27 16:11:46,067 INFO L704 BuchiCegarLoop]: Abstraction has 365 states and 502 transitions. [2021-08-27 16:11:46,067 INFO L587 BuchiCegarLoop]: Abstraction has 365 states and 502 transitions. [2021-08-27 16:11:46,067 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:11:46,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 365 states and 502 transitions. [2021-08-27 16:11:46,069 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 255 [2021-08-27 16:11:46,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:46,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:46,072 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:46,072 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:46,072 INFO L791 eck$LassoCheckResult]: Stem: 2477#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 2391#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 2392#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; 2426#L84 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 2403#L532 assume 0 != main_~tmp~5; 2379#L508 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2380#L107-1 [2021-08-27 16:11:46,073 INFO L793 eck$LassoCheckResult]: Loop: 2380#L107-1 assume !false; 2663#L557 assume test_~splverifierCounter~0 < 4; 2664#L558 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 2598#L566 assume !(0 != test_~tmp~6); 2596#L566-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 2595#L576 assume !(0 != test_~tmp___0~2); 2344#L576-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 2345#L586 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2464#L594-1 assume !(0 != ~pumpRunning~0); 2566#L238 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 2560#L296 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 2346#L270-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 2347#L214-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 2444#L219-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 2445#L415-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 2466#L415-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 2467#L421-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 2548#L274-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 2373#L245 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 2670#L174-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 2668#L101 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0; 2380#L107-1 [2021-08-27 16:11:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:46,074 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:11:46,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:46,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538920838] [2021-08-27 16:11:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:46,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:46,141 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:46,182 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:46,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:46,183 INFO L82 PathProgramCache]: Analyzing trace with hash 621628045, now seen corresponding path program 1 times [2021-08-27 16:11:46,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:46,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213286790] [2021-08-27 16:11:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:46,185 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:46,192 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:46,198 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:46,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:46,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1077699239, now seen corresponding path program 1 times [2021-08-27 16:11:46,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:46,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032007013] [2021-08-27 16:11:46,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:46,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:11:46,276 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 16:11:46,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:11:46,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032007013] [2021-08-27 16:11:46,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032007013] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:11:46,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:11:46,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:11:46,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216055720] [2021-08-27 16:11:46,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:11:46,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:11:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:11:46,729 INFO L87 Difference]: Start difference. First operand 365 states and 502 transitions. cyclomatic complexity: 140 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 16:11:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:11:47,057 INFO L93 Difference]: Finished difference Result 1228 states and 1690 transitions. [2021-08-27 16:11:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:11:47,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1228 states and 1690 transitions. [2021-08-27 16:11:47,067 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 907 [2021-08-27 16:11:47,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1228 states to 1228 states and 1690 transitions. [2021-08-27 16:11:47,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1228 [2021-08-27 16:11:47,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1228 [2021-08-27 16:11:47,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1228 states and 1690 transitions. [2021-08-27 16:11:47,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:11:47,083 INFO L681 BuchiCegarLoop]: Abstraction has 1228 states and 1690 transitions. [2021-08-27 16:11:47,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states and 1690 transitions. [2021-08-27 16:11:47,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 724. [2021-08-27 16:11:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 724 states have (on average 1.356353591160221) internal successors, (982), 723 states have internal predecessors, (982), 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 16:11:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 982 transitions. [2021-08-27 16:11:47,099 INFO L704 BuchiCegarLoop]: Abstraction has 724 states and 982 transitions. [2021-08-27 16:11:47,100 INFO L587 BuchiCegarLoop]: Abstraction has 724 states and 982 transitions. [2021-08-27 16:11:47,100 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 16:11:47,100 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 724 states and 982 transitions. [2021-08-27 16:11:47,103 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 510 [2021-08-27 16:11:47,104 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:47,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:47,106 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:47,106 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:47,106 INFO L791 eck$LassoCheckResult]: Stem: 4096#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 4003#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 4004#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; 4042#L84 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 4017#L532 assume 0 != main_~tmp~5; 3991#L508 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3978#L107-1 [2021-08-27 16:11:47,106 INFO L793 eck$LassoCheckResult]: Loop: 3978#L107-1 assume !false; 4097#L557 assume test_~splverifierCounter~0 < 4; 4101#L558 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 4092#L566 assume !(0 != test_~tmp~6); 4032#L566-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 4033#L576 assume !(0 != test_~tmp___0~2); 4069#L576-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 4414#L586 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 4002#L594-1 assume !(0 != ~pumpRunning~0); 3981#L238 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 3982#L296 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 4013#L270-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 4339#L214-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~4 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 4338#L219-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 4337#L415-3 assume !(0 != isHighWaterLevel_~tmp~4);isHighWaterLevel_~tmp___0~1 := 1; 4316#L415-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 4311#L421-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 4296#L274-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 4278#L245 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 3937#L174-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 3938#L101 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 3996#L206 __utac_acc__Specification3_spec__1_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 3997#L107 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 3978#L107-1 [2021-08-27 16:11:47,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:47,107 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 5 times [2021-08-27 16:11:47,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:47,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067675217] [2021-08-27 16:11:47,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:47,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:47,139 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:47,169 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:47,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:47,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1765228739, now seen corresponding path program 1 times [2021-08-27 16:11:47,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:47,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490915727] [2021-08-27 16:11:47,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:47,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:11:47,214 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 16:11:47,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:11:47,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490915727] [2021-08-27 16:11:47,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490915727] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:11:47,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:11:47,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:11:47,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095926815] [2021-08-27 16:11:47,219 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:11:47,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:11:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:11:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:11:47,220 INFO L87 Difference]: Start difference. First operand 724 states and 982 transitions. cyclomatic complexity: 263 Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 16:11:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:11:47,403 INFO L93 Difference]: Finished difference Result 1752 states and 2346 transitions. [2021-08-27 16:11:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:11:47,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1752 states and 2346 transitions. [2021-08-27 16:11:47,414 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 1258 [2021-08-27 16:11:47,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1752 states to 1752 states and 2346 transitions. [2021-08-27 16:11:47,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1752 [2021-08-27 16:11:47,425 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1752 [2021-08-27 16:11:47,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1752 states and 2346 transitions. [2021-08-27 16:11:47,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:11:47,427 INFO L681 BuchiCegarLoop]: Abstraction has 1752 states and 2346 transitions. [2021-08-27 16:11:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states and 2346 transitions. [2021-08-27 16:11:47,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 796. [2021-08-27 16:11:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 796 states have (on average 1.3241206030150754) internal successors, (1054), 795 states have internal predecessors, (1054), 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 16:11:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1054 transitions. [2021-08-27 16:11:47,449 INFO L704 BuchiCegarLoop]: Abstraction has 796 states and 1054 transitions. [2021-08-27 16:11:47,449 INFO L587 BuchiCegarLoop]: Abstraction has 796 states and 1054 transitions. [2021-08-27 16:11:47,449 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-27 16:11:47,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 796 states and 1054 transitions. [2021-08-27 16:11:47,453 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 558 [2021-08-27 16:11:47,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:11:47,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:11:47,455 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:11:47,455 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:11:47,455 INFO L791 eck$LassoCheckResult]: Stem: 6610#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~string12.base, #t~string12.offset := #Ultimate.allocOnStack(13);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string14.base, #t~string14.offset, 1);call write~init~int(77, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(101, #t~string14.base, 2 + #t~string14.offset, 1);call write~init~int(116, #t~string14.base, 3 + #t~string14.offset, 1);call write~init~int(104, #t~string14.base, 4 + #t~string14.offset, 1);call write~init~int(58, #t~string14.base, 5 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 6 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string16.base, #t~string16.offset, 1);call write~init~int(82, #t~string16.base, 1 + #t~string16.offset, 1);call write~init~int(73, #t~string16.base, 2 + #t~string16.offset, 1);call write~init~int(84, #t~string16.base, 3 + #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 4 + #t~string16.offset, 1);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(75, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string20.base, #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 1 + #t~string20.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.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(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 6491#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~8, main_~tmp~5;havoc main_~retValue_acc~8;havoc main_~tmp~5; 6492#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; 6533#L84 main_#t~ret42 := valid_product_#res;main_~tmp~5 := main_#t~ret42;havoc main_#t~ret42; 6508#L532 assume 0 != main_~tmp~5; 6480#L508 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~2, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~2;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 6467#L107-1 [2021-08-27 16:11:47,462 INFO L793 eck$LassoCheckResult]: Loop: 6467#L107-1 assume !false; 6611#L557 assume test_~splverifierCounter~0 < 4; 6618#L558 test_~tmp~6 := test_#t~nondet43;havoc test_#t~nondet43; 6603#L566 assume !(0 != test_~tmp~6); 6521#L566-1 test_~tmp___0~2 := test_#t~nondet44;havoc test_#t~nondet44; 6522#L576 assume !(0 != test_~tmp___0~2); 6443#L576-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 6444#L586 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 6490#L594-1 assume !(0 != ~pumpRunning~0); 6470#L238 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret22, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 6471#L296 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret21, processEnvironment__wrappee__methaneQuery_~tmp~1;havoc processEnvironment__wrappee__methaneQuery_~tmp~1; 6445#L270-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 6446#L214-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 6558#L219-1 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 6559#L415-3 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 6824#L415-5 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 6820#L421-1 processEnvironment__wrappee__methaneQuery_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~1 := processEnvironment__wrappee__methaneQuery_#t~ret21;havoc processEnvironment__wrappee__methaneQuery_#t~ret21; 6821#L274-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~1); 6473#L245 havoc __utac_acc__Specification3_spec__1_#t~ret8, __utac_acc__Specification3_spec__1_#t~ret9, __utac_acc__Specification3_spec__1_#t~ret10, __utac_acc__Specification3_spec__1_~tmp~0, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~0;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 6427#L174-3 __utac_acc__Specification3_spec__1_#t~ret8 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~0 := __utac_acc__Specification3_spec__1_#t~ret8;havoc __utac_acc__Specification3_spec__1_#t~ret8; 6428#L101 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 6484#L206 __utac_acc__Specification3_spec__1_#t~ret9 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret9;havoc __utac_acc__Specification3_spec__1_#t~ret9; 6485#L107 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 6467#L107-1 [2021-08-27 16:11:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:47,462 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 6 times [2021-08-27 16:11:47,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:47,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300711155] [2021-08-27 16:11:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:47,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:47,495 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:47,543 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:47,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:47,544 INFO L82 PathProgramCache]: Analyzing trace with hash 384105791, now seen corresponding path program 1 times [2021-08-27 16:11:47,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:47,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463546689] [2021-08-27 16:11:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:47,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:47,551 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:47,563 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:11:47,564 INFO L82 PathProgramCache]: Analyzing trace with hash 581859033, now seen corresponding path program 1 times [2021-08-27 16:11:47,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:11:47,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738108282] [2021-08-27 16:11:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:11:47,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:11:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:47,586 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:11:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:11:47,622 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:29,497 WARN L207 SmtUtils]: Spent 41.44 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:13:11,716 WARN L207 SmtUtils]: Spent 20.42 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:13:11,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:13:11 BoogieIcfgContainer [2021-08-27 16:13:11,849 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:13:11,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:13:11,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:13:11,849 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:13:11,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:11:44" (3/4) ... [2021-08-27 16:13:11,852 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:13:11,903 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:13:11,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:13:11,904 INFO L168 Benchmark]: Toolchain (without parser) took 89032.65 ms. Allocated memory was 62.9 MB in the beginning and 136.3 MB in the end (delta: 73.4 MB). Free memory was 43.2 MB in the beginning and 74.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:11,904 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 45.6 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:13:11,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 520.21 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 38.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:11,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.61 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 34.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:11,905 INFO L168 Benchmark]: Boogie Preprocessor took 81.55 ms. Allocated memory is still 62.9 MB. Free memory was 34.1 MB in the beginning and 31.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:11,906 INFO L168 Benchmark]: RCFGBuilder took 1047.88 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 31.2 MB in the beginning and 42.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:11,907 INFO L168 Benchmark]: BuchiAutomizer took 87234.95 ms. Allocated memory was 77.6 MB in the beginning and 136.3 MB in the end (delta: 58.7 MB). Free memory was 42.0 MB in the beginning and 77.2 MB in the end (delta: -35.2 MB). Peak memory consumption was 83.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:11,907 INFO L168 Benchmark]: Witness Printer took 54.08 ms. Allocated memory is still 136.3 MB. Free memory was 77.2 MB in the beginning and 74.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:11,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 45.6 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 520.21 ms. Allocated memory is still 62.9 MB. Free memory was 43.0 MB in the beginning and 38.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.61 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 34.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.55 ms. Allocated memory is still 62.9 MB. Free memory was 34.1 MB in the beginning and 31.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1047.88 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 31.2 MB in the beginning and 42.0 MB in the end (delta: -10.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 87234.95 ms. Allocated memory was 77.6 MB in the beginning and 136.3 MB in the end (delta: 58.7 MB). Free memory was 42.0 MB in the beginning and 77.2 MB in the end (delta: -35.2 MB). Peak memory consumption was 83.7 MB. Max. memory is 16.1 GB. * Witness Printer took 54.08 ms. Allocated memory is still 136.3 MB. Free memory was 77.2 MB in the beginning and 74.2 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 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 796 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 87.1s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 85.8s. Construction of modules took 0.5s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 112.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 2060 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 796 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1267 SDtfs, 1958 SDslu, 2060 SDs, 0 SdLazy, 329 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 534.8ms Time LassoAnalysisResults: nont1 unkn0 SFLI4 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: 556]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=8521} State at position 1 is {NULL=0, NULL=8521, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40c0c30d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c0d1723=78, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60c412f2=0, NULL=8537, methaneLevelCritical=0, NULL=0, tmp=0, NULL=8531, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=8548, NULL=8545, tmp=0, cleanupTimeShifts=4, NULL=8532, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@91c518a=0, waterLevel=1, NULL=0, NULL=0, NULL=0, retValue_acc=1, \result=1, head=0, pumpRunning=0, NULL=8527, retValue_acc=1, NULL=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=8529, NULL=0, NULL=0, NULL=0, tmp___0=0, NULL=8544, NULL=8526, NULL=8539, tmp=0, head=0, tmp=0, NULL=0, NULL=0, NULL=8523, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@465189d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bf7140f=0, NULL=8530, retValue_acc=0, tmp___0=0, NULL=0, NULL=0, NULL=8541, NULL=0, NULL=0, tmp___0=1, NULL=8536, NULL=8538, NULL=0, systemActive=1, NULL=8549, \result=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a0a845e=0, NULL=8534, \result=0, retValue_acc=0, NULL=8522, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11ba1f02=0, NULL=8547, \result=0, NULL=8524, NULL=0, NULL=0, NULL=8525, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8a06474=0, NULL=8546, NULL=8528, retValue_acc=1, tmp___2=78, splverifierCounter=0, NULL=0, \result=0, NULL=8533, NULL=8540, tmp___1=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ea3a61e=0, NULL=8535, NULL=8542, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@208bc44c=0, NULL=8543} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L131] int waterLevel = 1; [L132] int methaneLevelCritical = 0; [L231] int pumpRunning = 0; [L232] int systemActive = 1; [L449] int cleanupTimeShifts = 4; [L784] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L523] int retValue_acc ; [L524] int tmp ; [L80] int retValue_acc ; [L83] retValue_acc = 1 [L84] return (retValue_acc); [L530] tmp = valid_product() [L532] COND TRUE \read(tmp) [L547] int splverifierCounter ; [L548] int tmp ; [L549] int tmp___0 ; [L550] int tmp___1 ; [L551] int tmp___2 ; [L554] splverifierCounter = 0 Loop: [L556] COND TRUE 1 [L558] COND TRUE splverifierCounter < 4 [L564] tmp = __VERIFIER_nondet_int() [L566] COND FALSE !(\read(tmp)) [L574] tmp___0 = __VERIFIER_nondet_int() [L576] COND FALSE !(\read(tmp___0)) [L584] tmp___2 = __VERIFIER_nondet_int() [L586] COND TRUE \read(tmp___2) [L444] systemActive = 1 [L238] COND FALSE !(\read(pumpRunning)) [L245] COND TRUE \read(systemActive) [L293] int tmp ; [L296] COND FALSE !(\read(pumpRunning)) [L267] int tmp ; [L270] COND TRUE ! pumpRunning [L407] int retValue_acc ; [L408] int tmp ; [L409] int tmp___0 ; [L211] int retValue_acc ; [L214] COND TRUE waterLevel < 2 [L215] retValue_acc = 1 [L216] return (retValue_acc); [L413] tmp = isHighWaterSensorDry() [L415] COND TRUE \read(tmp) [L416] tmp___0 = 0 [L420] retValue_acc = tmp___0 [L421] return (retValue_acc); [L272] tmp = isHighWaterLevel() [L274] COND FALSE !(\read(tmp)) [L93] int tmp ; [L94] int tmp___0 ; [L95] int tmp___1 ; [L170] int retValue_acc ; [L173] retValue_acc = methaneLevelCritical [L174] return (retValue_acc); [L99] tmp = isMethaneLevelCritical() [L101] COND FALSE !(\read(tmp)) [L202] int retValue_acc ; [L205] retValue_acc = waterLevel [L206] return (retValue_acc); [L105] tmp___0 = getWaterLevel() [L107] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:13:11,972 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...