./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product36.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_product36.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 99c00eceebadc8c15e4601def9bb17816540a0dc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:10:21,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:10:21,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:10:21,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:10:21,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:10:21,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:10:21,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:10:21,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:10:21,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:10:21,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:10:21,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:10:21,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:10:21,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:10:21,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:10:21,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:10:21,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:10:21,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:10:21,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:10:21,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:10:21,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:10:21,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:10:21,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:10:21,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:10:21,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:10:21,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:10:21,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:10:21,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:10:21,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:10:21,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:10:21,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:10:21,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:10:21,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:10:21,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:10:21,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:10:21,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:10:21,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:10:21,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:10:21,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:10:21,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:10:21,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:10:21,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:10:21,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:10:21,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:10:21,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:10:21,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:10:21,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:10:21,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:10:21,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:10:21,723 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:10:21,723 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:10:21,724 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:10:21,724 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:10:21,724 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:10:21,724 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:10:21,725 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:10:21,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:10:21,725 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:10:21,725 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:10:21,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:10:21,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:10:21,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:10:21,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:10:21,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:10:21,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:10:21,727 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:10:21,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:10:21,727 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:10:21,728 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:10:21,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:10:21,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:10:21,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:10:21,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:10:21,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:10:21,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:10:21,730 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:10:21,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99c00eceebadc8c15e4601def9bb17816540a0dc [2021-08-27 16:10:22,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:10:22,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:10:22,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:10:22,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:10:22,074 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:10:22,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c [2021-08-27 16:10:22,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777ff617f/90f85d64382e41e8be64f0c645e1e5a0/FLAGa9ff2c6d3 [2021-08-27 16:10:22,674 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:10:22,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product36.cil.c [2021-08-27 16:10:22,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777ff617f/90f85d64382e41e8be64f0c645e1e5a0/FLAGa9ff2c6d3 [2021-08-27 16:10:23,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/777ff617f/90f85d64382e41e8be64f0c645e1e5a0 [2021-08-27 16:10:23,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:10:23,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:10:23,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:10:23,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:10:23,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:10:23,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564fe3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23, skipping insertion in model container [2021-08-27 16:10:23,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:10:23,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:10:23,275 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_product36.cil.c[1281,1294] [2021-08-27 16:10:23,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:10:23,441 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:10:23,452 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_product36.cil.c[1281,1294] [2021-08-27 16:10:23,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:10:23,556 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:10:23,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23 WrapperNode [2021-08-27 16:10:23,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:10:23,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:10:23,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:10:23,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:10:23,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:10:23,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:10:23,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:10:23,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:10:23,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:10:23,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:10:23,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:10:23,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:10:23,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (1/1) ... [2021-08-27 16:10:23,675 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:10:23,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:10:23,692 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 16:10:23,713 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 16:10:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:10:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:10:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:10:23,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:10:24,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:10:24,542 INFO L299 CfgBuilder]: Removed 108 assume(true) statements. [2021-08-27 16:10:24,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:10:24 BoogieIcfgContainer [2021-08-27 16:10:24,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:10:24,547 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:10:24,547 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:10:24,551 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:10:24,552 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:10:24,552 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:10:23" (1/3) ... [2021-08-27 16:10:24,553 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6439f82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:10:24, skipping insertion in model container [2021-08-27 16:10:24,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:10:24,553 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:10:23" (2/3) ... [2021-08-27 16:10:24,554 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6439f82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:10:24, skipping insertion in model container [2021-08-27 16:10:24,554 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:10:24,554 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:10:24" (3/3) ... [2021-08-27 16:10:24,555 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product36.cil.c [2021-08-27 16:10:24,587 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:10:24,588 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:10:24,588 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:10:24,588 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:10:24,588 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:10:24,588 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:10:24,588 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:10:24,588 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:10:24,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 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 16:10:24,617 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-08-27 16:10:24,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:24,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:24,624 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:24,624 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:10:24,624 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:10:24,625 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 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 16:10:24,638 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-08-27 16:10:24,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:24,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:24,640 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:24,640 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:10:24,644 INFO L791 eck$LassoCheckResult]: Stem: 65#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(80, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(117, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(109, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(112, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(32, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(77, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(101, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(116, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(104, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string70.base, #t~string70.offset, 1);call write~init~int(82, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(73, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(84, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 4 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(75, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 51#L-1true havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 59#L892true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 21#L900true main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 80#L856true assume 0 != main_~tmp~6; 37#L830true havoc test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 53#L920-1true [2021-08-27 16:10:24,645 INFO L793 eck$LassoCheckResult]: Loop: 53#L920-1true assume !false; 57#L618true assume test_~splverifierCounter~0 < 4; 12#L619true test_~tmp~5 := test_#t~nondet61;havoc test_#t~nondet61; 67#L627true assume !(0 != test_~tmp~5); 29#L627-1true test_~tmp___0~1 := test_#t~nondet62;havoc test_#t~nondet62; 39#L637true assume !(0 != test_~tmp___0~1); 83#L637-1true test_~tmp___2~0 := test_#t~nondet63;havoc test_#t~nondet63; 74#L647true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 46#L655-1true assume !(0 != ~pumpRunning~0); 45#L436true assume !(0 != ~systemActive~0); 77#L443true havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 32#L720true __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 14#L914true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 53#L920-1true [2021-08-27 16:10:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:24,650 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:10:24,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:24,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592384912] [2021-08-27 16:10:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:24,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:24,851 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:25,007 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:25,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1671986817, now seen corresponding path program 1 times [2021-08-27 16:10:25,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:25,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049472154] [2021-08-27 16:10:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:25,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:10:25,081 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 16:10:25,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:10:25,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049472154] [2021-08-27 16:10:25,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049472154] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:10:25,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:10:25,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:10:25,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420321711] [2021-08-27 16:10:25,089 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:10:25,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:10:25,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:10:25,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:10:25,105 INFO L87 Difference]: Start difference. First operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 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 16:10:25,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:10:25,175 INFO L93 Difference]: Finished difference Result 160 states and 228 transitions. [2021-08-27 16:10:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:10:25,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 228 transitions. [2021-08-27 16:10:25,189 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 102 [2021-08-27 16:10:25,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 146 states and 213 transitions. [2021-08-27 16:10:25,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 146 [2021-08-27 16:10:25,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 146 [2021-08-27 16:10:25,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 146 states and 213 transitions. [2021-08-27 16:10:25,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:10:25,205 INFO L681 BuchiCegarLoop]: Abstraction has 146 states and 213 transitions. [2021-08-27 16:10:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states and 213 transitions. [2021-08-27 16:10:25,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2021-08-27 16:10:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 144 states have (on average 1.4583333333333333) internal successors, (210), 143 states have internal predecessors, (210), 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 16:10:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 210 transitions. [2021-08-27 16:10:25,252 INFO L704 BuchiCegarLoop]: Abstraction has 144 states and 210 transitions. [2021-08-27 16:10:25,252 INFO L587 BuchiCegarLoop]: Abstraction has 144 states and 210 transitions. [2021-08-27 16:10:25,252 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:10:25,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 144 states and 210 transitions. [2021-08-27 16:10:25,259 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 100 [2021-08-27 16:10:25,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:25,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:25,261 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:25,261 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:10:25,262 INFO L791 eck$LassoCheckResult]: Stem: 327#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(80, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(117, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(109, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(112, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(32, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(77, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(101, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(116, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(104, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string70.base, #t~string70.offset, 1);call write~init~int(82, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(73, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(84, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 4 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(75, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 318#L-1 havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 319#L892 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 279#L900 main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 280#L856 assume 0 != main_~tmp~6; 304#L830 havoc test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 305#L920-1 [2021-08-27 16:10:25,263 INFO L793 eck$LassoCheckResult]: Loop: 305#L920-1 assume !false; 347#L618 assume test_~splverifierCounter~0 < 4; 346#L619 test_~tmp~5 := test_#t~nondet61;havoc test_#t~nondet61; 345#L627 assume !(0 != test_~tmp~5); 343#L627-1 test_~tmp___0~1 := test_#t~nondet62;havoc test_#t~nondet62; 342#L637 assume !(0 != test_~tmp___0~1); 335#L637-1 test_~tmp___2~0 := test_#t~nondet63;havoc test_#t~nondet63; 333#L647 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 302#L655-1 assume !(0 != ~pumpRunning~0); 269#L436 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 313#L468 assume !(0 == ~pumpRunning~0); 355#L443 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 354#L720 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 350#L914 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 305#L920-1 [2021-08-27 16:10:25,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:25,263 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:10:25,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:25,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562201910] [2021-08-27 16:10:25,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:25,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:25,333 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:25,422 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:25,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:25,424 INFO L82 PathProgramCache]: Analyzing trace with hash -323593906, now seen corresponding path program 1 times [2021-08-27 16:10:25,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:25,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925515877] [2021-08-27 16:10:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:25,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:10:25,446 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 16:10:25,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:10:25,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925515877] [2021-08-27 16:10:25,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925515877] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:10:25,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:10:25,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:10:25,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382908810] [2021-08-27 16:10:25,452 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:10:25,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:10:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:10:25,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:10:25,455 INFO L87 Difference]: Start difference. First operand 144 states and 210 transitions. cyclomatic complexity: 69 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 16:10:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:10:25,534 INFO L93 Difference]: Finished difference Result 239 states and 334 transitions. [2021-08-27 16:10:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:10:25,535 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 239 states and 334 transitions. [2021-08-27 16:10:25,537 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 171 [2021-08-27 16:10:25,539 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 239 states to 239 states and 334 transitions. [2021-08-27 16:10:25,544 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 239 [2021-08-27 16:10:25,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 239 [2021-08-27 16:10:25,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 239 states and 334 transitions. [2021-08-27 16:10:25,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:10:25,546 INFO L681 BuchiCegarLoop]: Abstraction has 239 states and 334 transitions. [2021-08-27 16:10:25,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states and 334 transitions. [2021-08-27 16:10:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-08-27 16:10:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 239 states have (on average 1.397489539748954) internal successors, (334), 238 states have internal predecessors, (334), 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 16:10:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 334 transitions. [2021-08-27 16:10:25,559 INFO L704 BuchiCegarLoop]: Abstraction has 239 states and 334 transitions. [2021-08-27 16:10:25,559 INFO L587 BuchiCegarLoop]: Abstraction has 239 states and 334 transitions. [2021-08-27 16:10:25,559 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:10:25,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 239 states and 334 transitions. [2021-08-27 16:10:25,562 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 171 [2021-08-27 16:10:25,563 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:25,563 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:25,564 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:25,564 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] [2021-08-27 16:10:25,564 INFO L791 eck$LassoCheckResult]: Stem: 730#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(80, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(117, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(109, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(112, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(32, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(77, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(101, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(116, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(104, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string70.base, #t~string70.offset, 1);call write~init~int(82, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(73, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(84, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 4 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(75, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 718#L-1 havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 719#L892 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 670#L900 main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 671#L856 assume 0 != main_~tmp~6; 700#L830 havoc test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 660#L920-1 [2021-08-27 16:10:25,565 INFO L793 eck$LassoCheckResult]: Loop: 660#L920-1 assume !false; 720#L618 assume test_~splverifierCounter~0 < 4; 655#L619 test_~tmp~5 := test_#t~nondet61;havoc test_#t~nondet61; 656#L627 assume !(0 != test_~tmp~5); 683#L627-1 test_~tmp___0~1 := test_#t~nondet62;havoc test_#t~nondet62; 684#L637 assume !(0 != test_~tmp___0~1); 650#L637-1 test_~tmp___2~0 := test_#t~nondet63;havoc test_#t~nondet63; 738#L647 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 694#L655-1 assume !(0 != ~pumpRunning~0); 709#L436 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 710#L468 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret60, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 734#L760 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 735#L765 isHighWaterLevel_#t~ret60 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret60;havoc isHighWaterLevel_#t~ret60; 810#L570 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 809#L570-2 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 808#L576 processEnvironment_#t~ret42 := isHighWaterLevel_#res;processEnvironment_~tmp~3 := processEnvironment_#t~ret42;havoc processEnvironment_#t~ret42; 695#L472 assume !(0 != processEnvironment_~tmp~3); 697#L443 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 689#L720 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 659#L914 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 660#L920-1 [2021-08-27 16:10:25,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:25,566 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:10:25,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:25,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856335080] [2021-08-27 16:10:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:25,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:25,619 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:25,690 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:25,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1551490662, now seen corresponding path program 1 times [2021-08-27 16:10:25,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:25,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105364913] [2021-08-27 16:10:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:25,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:25,698 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:25,708 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:25,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:25,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1536778688, now seen corresponding path program 1 times [2021-08-27 16:10:25,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:25,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845307554] [2021-08-27 16:10:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:25,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:10:25,802 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 16:10:25,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:10:25,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845307554] [2021-08-27 16:10:25,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845307554] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:10:25,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:10:25,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:10:25,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115147861] [2021-08-27 16:10:26,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:10:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:10:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:10:26,118 INFO L87 Difference]: Start difference. First operand 239 states and 334 transitions. cyclomatic complexity: 98 Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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 16:10:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:10:26,220 INFO L93 Difference]: Finished difference Result 788 states and 1109 transitions. [2021-08-27 16:10:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:10:26,221 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 788 states and 1109 transitions. [2021-08-27 16:10:26,226 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 600 [2021-08-27 16:10:26,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 788 states to 788 states and 1109 transitions. [2021-08-27 16:10:26,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 788 [2021-08-27 16:10:26,233 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 788 [2021-08-27 16:10:26,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 788 states and 1109 transitions. [2021-08-27 16:10:26,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:10:26,236 INFO L681 BuchiCegarLoop]: Abstraction has 788 states and 1109 transitions. [2021-08-27 16:10:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states and 1109 transitions. [2021-08-27 16:10:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 472. [2021-08-27 16:10:26,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 472 states have (on average 1.36864406779661) internal successors, (646), 471 states have internal predecessors, (646), 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 16:10:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 646 transitions. [2021-08-27 16:10:26,273 INFO L704 BuchiCegarLoop]: Abstraction has 472 states and 646 transitions. [2021-08-27 16:10:26,273 INFO L587 BuchiCegarLoop]: Abstraction has 472 states and 646 transitions. [2021-08-27 16:10:26,273 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:10:26,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 472 states and 646 transitions. [2021-08-27 16:10:26,276 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 342 [2021-08-27 16:10:26,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:10:26,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:10:26,276 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:10:26,277 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] [2021-08-27 16:10:26,277 INFO L791 eck$LassoCheckResult]: Stem: 1779#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(13);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string47.base, #t~string47.offset, 1);call write~init~int(110, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 2 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(102, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 3 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string51.base, #t~string51.offset, 1);call write~init~int(80, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(117, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(109, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(112, #t~string51.base, 4 + #t~string51.offset, 1);call write~init~int(58, #t~string51.base, 5 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 6 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string57.base, #t~string57.offset, 1);call write~init~int(32, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(77, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(101, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(116, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(104, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string70.base, #t~string70.offset, 1);call write~init~int(82, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(73, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(84, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 4 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(75, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 1764#L-1 havoc main_#res;havoc main_#t~ret75, main_~retValue_acc~9, main_~tmp~6;havoc main_~retValue_acc~9;havoc main_~tmp~6; 1765#L892 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 1714#L900 main_#t~ret75 := valid_product_#res;main_~tmp~6 := main_#t~ret75;havoc main_#t~ret75; 1715#L856 assume 0 != main_~tmp~6; 1742#L830 havoc test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1743#L920-1 [2021-08-27 16:10:26,277 INFO L793 eck$LassoCheckResult]: Loop: 1743#L920-1 assume !false; 1967#L618 assume test_~splverifierCounter~0 < 4; 1966#L619 test_~tmp~5 := test_#t~nondet61;havoc test_#t~nondet61; 1965#L627 assume !(0 != test_~tmp~5); 1963#L627-1 test_~tmp___0~1 := test_#t~nondet62;havoc test_#t~nondet62; 1962#L637 assume !(0 != test_~tmp___0~1); 1931#L637-1 test_~tmp___2~0 := test_#t~nondet63;havoc test_#t~nondet63; 1928#L647 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1757#L655-1 assume !(0 != ~pumpRunning~0); 1755#L436 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret42, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1756#L468 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret60, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1780#L760 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1716#L765 isHighWaterLevel_#t~ret60 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret60;havoc isHighWaterLevel_#t~ret60; 1717#L570 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~0 := 0; 1763#L570-2 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1718#L576 processEnvironment_#t~ret42 := isHighWaterLevel_#res;processEnvironment_~tmp~3 := processEnvironment_#t~ret42;havoc processEnvironment_#t~ret42; 1719#L472 assume !(0 != processEnvironment_~tmp~3); 1741#L443 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1972#L720 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 1971#L914 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1970#L752 __utac_acc__Specification3_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 1969#L920 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 1743#L920-1 [2021-08-27 16:10:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:26,278 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:10:26,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:26,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865988404] [2021-08-27 16:10:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:26,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:26,325 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:26,370 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:26,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:26,372 INFO L82 PathProgramCache]: Analyzing trace with hash -628868084, now seen corresponding path program 1 times [2021-08-27 16:10:26,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:26,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956751578] [2021-08-27 16:10:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:26,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:26,385 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:26,393 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:10:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:10:26,394 INFO L82 PathProgramCache]: Analyzing trace with hash 624437042, now seen corresponding path program 1 times [2021-08-27 16:10:26,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:10:26,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551646752] [2021-08-27 16:10:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:10:26,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:10:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:26,440 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:10:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:10:26,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:11:11,566 WARN L207 SmtUtils]: Spent 44.78 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:11:57,709 WARN L207 SmtUtils]: Spent 21.87 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:11:57,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:11:57 BoogieIcfgContainer [2021-08-27 16:11:57,811 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:11:57,812 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:11:57,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:11:57,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:11:57,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:10:24" (3/4) ... [2021-08-27 16:11:57,815 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:11:57,859 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:11:57,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:11:57,865 INFO L168 Benchmark]: Toolchain (without parser) took 94747.05 ms. Allocated memory was 52.4 MB in the beginning and 117.4 MB in the end (delta: 65.0 MB). Free memory was 27.8 MB in the beginning and 57.2 MB in the end (delta: -29.4 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:11:57,865 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 34.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:11:57,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.52 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.6 MB in the beginning and 39.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:11:57,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.81 ms. Allocated memory is still 65.0 MB. Free memory was 39.5 MB in the beginning and 36.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:11:57,866 INFO L168 Benchmark]: Boogie Preprocessor took 32.05 ms. Allocated memory is still 65.0 MB. Free memory was 36.6 MB in the beginning and 34.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:11:57,867 INFO L168 Benchmark]: RCFGBuilder took 875.77 ms. Allocated memory is still 65.0 MB. Free memory was 34.3 MB in the beginning and 33.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:11:57,867 INFO L168 Benchmark]: BuchiAutomizer took 93264.46 ms. Allocated memory was 65.0 MB in the beginning and 117.4 MB in the end (delta: 52.4 MB). Free memory was 32.8 MB in the beginning and 60.2 MB in the end (delta: -27.4 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:11:57,867 INFO L168 Benchmark]: Witness Printer took 52.29 ms. Allocated memory is still 117.4 MB. Free memory was 60.2 MB in the beginning and 57.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:11:57,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 34.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 432.52 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 27.6 MB in the beginning and 39.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.81 ms. Allocated memory is still 65.0 MB. Free memory was 39.5 MB in the beginning and 36.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.05 ms. Allocated memory is still 65.0 MB. Free memory was 36.6 MB in the beginning and 34.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 875.77 ms. Allocated memory is still 65.0 MB. Free memory was 34.3 MB in the beginning and 33.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 93264.46 ms. Allocated memory was 65.0 MB in the beginning and 117.4 MB in the end (delta: 52.4 MB). Free memory was 32.8 MB in the beginning and 60.2 MB in the end (delta: -27.4 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. * Witness Printer took 52.29 ms. Allocated memory is still 117.4 MB. Free memory was 60.2 MB in the beginning and 57.2 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 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 472 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 93.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 92.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 84.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 318 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 472 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 399 SDtfs, 623 SDslu, 640 SDs, 0 SdLazy, 75 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.7ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 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: 617]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=23248} State at position 1 is {NULL=0, NULL=36978, NULL=23248, NULL=0, methaneLevelCritical=0, retValue_acc=1, retValue_acc=0, tmp=0, NULL=0, NULL=36981, tmp___1=0, NULL=36990, NULL=0, NULL=36971, NULL=36976, cleanupTimeShifts=4, NULL=36979, tmp=0, NULL=0, waterLevel=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69c60a6b=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=36989, NULL=36966, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, tmp=1, NULL=0, retValue_acc=1, NULL=23250, tmp___0=0, NULL=36973, NULL=36988, tmp=0, head=0, NULL=0, NULL=0, NULL=36985, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@128a5571=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e7b9730=0, NULL=36974, retValue_acc=0, NULL=36968, NULL=36972, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45a8f421=0, NULL=0, NULL=0, NULL=23249, NULL=36967, NULL=36984, NULL=36987, tmp___0=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6922be96=0, NULL=0, NULL=0, systemActive=1, \result=1, retValue_acc=0, \result=0, NULL=36982, NULL=0, NULL=0, NULL=0, NULL=36975, NULL=36983, \result=0, NULL=36991, NULL=0, NULL=36970, NULL=36977, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29834169=0, tmp___2=69, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=36980, NULL=36969, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11809273=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f6e23b1=69, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8335bf3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62a4323a=0, NULL=36986} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L220] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L428] int pumpRunning = 0; [L429] int systemActive = 1; [L677] int waterLevel = 1; [L678] int methaneLevelCritical = 0; [L771] int cleanupTimeShifts = 4; [L847] int retValue_acc ; [L848] int tmp ; [L896] int retValue_acc ; [L899] retValue_acc = 1 [L900] return (retValue_acc); [L854] tmp = valid_product() [L856] COND TRUE \read(tmp) [L608] int splverifierCounter ; [L609] int tmp ; [L610] int tmp___0 ; [L611] int tmp___1 ; [L612] int tmp___2 ; [L615] splverifierCounter = 0 Loop: [L617] COND TRUE 1 [L619] COND TRUE splverifierCounter < 4 [L625] tmp = __VERIFIER_nondet_int() [L627] COND FALSE !(\read(tmp)) [L635] tmp___0 = __VERIFIER_nondet_int() [L637] COND FALSE !(\read(tmp___0)) [L645] tmp___2 = __VERIFIER_nondet_int() [L647] COND TRUE \read(tmp___2) [L599] systemActive = 1 [L436] COND FALSE !(\read(pumpRunning)) [L443] COND TRUE \read(systemActive) [L465] int tmp ; [L468] COND TRUE ! pumpRunning [L562] int retValue_acc ; [L563] int tmp ; [L564] int tmp___0 ; [L757] int retValue_acc ; [L760] COND TRUE waterLevel < 2 [L761] retValue_acc = 1 [L762] return (retValue_acc); [L568] tmp = isHighWaterSensorDry() [L570] COND TRUE \read(tmp) [L571] tmp___0 = 0 [L575] retValue_acc = tmp___0 [L576] return (retValue_acc); [L470] tmp = isHighWaterLevel() [L472] COND FALSE !(\read(tmp)) [L906] int tmp ; [L907] int tmp___0 ; [L908] int tmp___1 ; [L716] int retValue_acc ; [L719] retValue_acc = methaneLevelCritical [L720] return (retValue_acc); [L912] tmp = isMethaneLevelCritical() [L914] COND FALSE !(\read(tmp)) [L748] int retValue_acc ; [L751] retValue_acc = waterLevel [L752] return (retValue_acc); [L918] tmp___0 = getWaterLevel() [L920] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:11:57,923 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...