./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 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_product62.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 4d13ffd2557e7d7902d8a5eac414f9fb7393252d85c14855e86000741be6847f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:40:57,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:40:57,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:40:57,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:40:57,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:40:57,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:40:57,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:40:57,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:40:57,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:40:57,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:40:57,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:40:57,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:40:57,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:40:57,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:40:57,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:40:57,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:40:57,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:40:57,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:40:57,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:40:57,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:40:57,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:40:57,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:40:57,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:40:57,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:40:57,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:40:57,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:40:57,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:40:57,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:40:57,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:40:57,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:40:57,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:40:57,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:40:57,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:40:57,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:40:57,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:40:57,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:40:57,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:40:57,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:40:57,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:40:57,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:40:57,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:40:57,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:40:57,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:40:57,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:40:57,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:40:57,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:40:57,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:40:57,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:40:57,555 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:40:57,556 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:40:57,556 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:40:57,556 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:40:57,557 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:40:57,557 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:40:57,557 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:40:57,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:40:57,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:40:57,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:40:57,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:40:57,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:40:57,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:40:57,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:40:57,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:40:57,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:40:57,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:40:57,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:40:57,564 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:40:57,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:40:57,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:40:57,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:40:57,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:40:57,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:40:57,565 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:40:57,566 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:40:57,567 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d13ffd2557e7d7902d8a5eac414f9fb7393252d85c14855e86000741be6847f [2021-12-28 09:40:57,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:40:57,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:40:57,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:40:57,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:40:57,853 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:40:57,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2021-12-28 09:40:57,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c5f88c6/59ac917805ee40c981c7ec3a9c55a61d/FLAGcfd2ed9ee [2021-12-28 09:40:58,324 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:40:58,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product62.cil.c [2021-12-28 09:40:58,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c5f88c6/59ac917805ee40c981c7ec3a9c55a61d/FLAGcfd2ed9ee [2021-12-28 09:40:58,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26c5f88c6/59ac917805ee40c981c7ec3a9c55a61d [2021-12-28 09:40:58,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:40:58,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:40:58,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:40:58,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:40:58,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:40:58,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:40:58" (1/1) ... [2021-12-28 09:40:58,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b94d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:58, skipping insertion in model container [2021-12-28 09:40:58,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:40:58" (1/1) ... [2021-12-28 09:40:58,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:40:58,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:40:58,891 WARN L230 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_product62.cil.c[1605,1618] [2021-12-28 09:40:59,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:40:59,040 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:40:59,051 WARN L230 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_product62.cil.c[1605,1618] [2021-12-28 09:40:59,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:40:59,162 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:40:59,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59 WrapperNode [2021-12-28 09:40:59,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:40:59,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:40:59,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:40:59,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:40:59,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,250 INFO L137 Inliner]: procedures = 58, calls = 162, calls flagged for inlining = 59, calls inlined = 177, statements flattened = 1289 [2021-12-28 09:40:59,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:40:59,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:40:59,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:40:59,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:40:59,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:40:59,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:40:59,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:40:59,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:40:59,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (1/1) ... [2021-12-28 09:40:59,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:40:59,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:40:59,363 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) [2021-12-28 09:40:59,374 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 [2021-12-28 09:40:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:40:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:40:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:40:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:40:59,466 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:40:59,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:41:00,114 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:41:00,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:41:00,130 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 09:41:00,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:41:00 BoogieIcfgContainer [2021-12-28 09:41:00,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:41:00,135 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:41:00,135 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:41:00,138 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:41:00,138 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:41:00,138 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:40:58" (1/3) ... [2021-12-28 09:41:00,139 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ddad191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:41:00, skipping insertion in model container [2021-12-28 09:41:00,139 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:41:00,140 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:40:59" (2/3) ... [2021-12-28 09:41:00,140 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3ddad191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:41:00, skipping insertion in model container [2021-12-28 09:41:00,140 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:41:00,140 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:41:00" (3/3) ... [2021-12-28 09:41:00,141 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product62.cil.c [2021-12-28 09:41:00,180 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:41:00,181 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:41:00,181 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:41:00,181 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:41:00,181 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:41:00,181 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:41:00,181 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:41:00,181 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:41:00,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 325 states, 324 states have (on average 1.3549382716049383) internal successors, (439), 324 states have internal predecessors, (439), 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) [2021-12-28 09:41:00,256 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 213 [2021-12-28 09:41:00,256 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:41:00,257 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:41:00,264 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:00,264 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:00,264 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:41:00,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 325 states, 324 states have (on average 1.3549382716049383) internal successors, (439), 324 states have internal predecessors, (439), 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) [2021-12-28 09:41:00,275 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 213 [2021-12-28 09:41:00,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:41:00,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:41:00,278 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:00,278 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:00,281 INFO L791 eck$LassoCheckResult]: Stem: 313#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 208#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret55#1, main_~retValue_acc~13#1, main_~tmp~11#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~11#1;assume { :begin_inline_select_helpers } true; 212#L596true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 175#L589true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 215#L604true main_#t~ret55#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~11#1 := main_#t~ret55#1;havoc main_#t~ret55#1; 325#L1012true assume 0 != main_~tmp~11#1;assume { :begin_inline_setup } true; 199#L989true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 154#L873-2true [2021-12-28 09:41:00,282 INFO L793 eck$LassoCheckResult]: Loop: 154#L873-2true assume !false; 258#L874true assume test_~splverifierCounter~0#1 < 4; 14#L875true test_~tmp~10#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 203#L883true assume !(0 != test_~tmp~10#1); 185#L883-2true test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 91#L893true assume !(0 != test_~tmp___0~3#1); 280#L893-2true test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 290#L903true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet54#1;havoc test_#t~nondet54#1; 229#L911true assume 0 != test_~tmp___1~1#1; 15#L911-2true assume { :begin_inline_timeShift } true; 66#L621true assume !(0 != ~pumpRunning~0); 189#L621-2true assume !(0 != ~systemActive~0); 271#L628-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 19#L511-5true __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; 78#L71true assume 0 != __utac_acc__Specification3_spec__1_~tmp~0#1; 99#L77-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 292#L638true assume { :end_inline_timeShift } true; 154#L873-2true [2021-12-28 09:41:00,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-28 09:41:00,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:00,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353277832] [2021-12-28 09:41:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:00,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:00,420 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:41:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:00,461 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:41:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:00,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1723998252, now seen corresponding path program 1 times [2021-12-28 09:41:00,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:00,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535616216] [2021-12-28 09:41:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:00,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:00,480 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:41:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:00,492 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:41:00,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:00,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1639287440, now seen corresponding path program 1 times [2021-12-28 09:41:00,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:00,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628135684] [2021-12-28 09:41:00,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:00,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:41:00,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:41:00,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:41:00,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628135684] [2021-12-28 09:41:00,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628135684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:41:00,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:41:00,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 09:41:00,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962229962] [2021-12-28 09:41:00,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:41:00,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:41:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 09:41:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 09:41:00,800 INFO L87 Difference]: Start difference. First operand has 325 states, 324 states have (on average 1.3549382716049383) internal successors, (439), 324 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-12-28 09:41:00,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:41:00,889 INFO L93 Difference]: Finished difference Result 322 states and 425 transitions. [2021-12-28 09:41:00,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 09:41:00,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 425 transitions. [2021-12-28 09:41:00,908 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 209 [2021-12-28 09:41:00,915 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 312 states and 415 transitions. [2021-12-28 09:41:00,917 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 312 [2021-12-28 09:41:00,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 312 [2021-12-28 09:41:00,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 312 states and 415 transitions. [2021-12-28 09:41:00,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:41:00,925 INFO L681 BuchiCegarLoop]: Abstraction has 312 states and 415 transitions. [2021-12-28 09:41:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states and 415 transitions. [2021-12-28 09:41:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-12-28 09:41:00,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 312 states have (on average 1.330128205128205) internal successors, (415), 311 states have internal predecessors, (415), 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) [2021-12-28 09:41:00,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 415 transitions. [2021-12-28 09:41:00,973 INFO L704 BuchiCegarLoop]: Abstraction has 312 states and 415 transitions. [2021-12-28 09:41:00,973 INFO L587 BuchiCegarLoop]: Abstraction has 312 states and 415 transitions. [2021-12-28 09:41:00,973 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:41:00,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 312 states and 415 transitions. [2021-12-28 09:41:00,975 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 209 [2021-12-28 09:41:00,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:41:00,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:41:00,978 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:00,979 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:00,980 INFO L791 eck$LassoCheckResult]: Stem: 975#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 936#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret55#1, main_~retValue_acc~13#1, main_~tmp~11#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~11#1;assume { :begin_inline_select_helpers } true; 937#L596 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 916#L589 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 917#L604 main_#t~ret55#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~11#1 := main_#t~ret55#1;havoc main_#t~ret55#1; 945#L1012 assume 0 != main_~tmp~11#1;assume { :begin_inline_setup } true; 932#L989 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 895#L873-2 [2021-12-28 09:41:00,980 INFO L793 eck$LassoCheckResult]: Loop: 895#L873-2 assume !false; 896#L874 assume test_~splverifierCounter~0#1 < 4; 689#L875 test_~tmp~10#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 690#L883 assume !(0 != test_~tmp~10#1); 875#L883-2 test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 824#L893 assume !(0 != test_~tmp___0~3#1); 790#L893-2 test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 971#L903 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 961#L858 assume { :end_inline_startSystem } true; 691#L911-2 assume { :begin_inline_timeShift } true; 692#L621 assume !(0 != ~pumpRunning~0); 788#L621-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret38#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 927#L705 assume 0 != ~pumpRunning~0;assume { :begin_inline_isMethaneAlarm } true;havoc isMethaneAlarm_#res#1;havoc isMethaneAlarm_#t~ret40#1, isMethaneAlarm_~retValue_acc~9#1;havoc isMethaneAlarm_~retValue_acc~9#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 959#L511 isMethaneAlarm_#t~ret40#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;isMethaneAlarm_~retValue_acc~9#1 := isMethaneAlarm_#t~ret40#1;havoc isMethaneAlarm_#t~ret40#1;isMethaneAlarm_#res#1 := isMethaneAlarm_~retValue_acc~9#1; 681#L766 processEnvironment_#t~ret38#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~6#1 := processEnvironment_#t~ret38#1;havoc processEnvironment_#t~ret38#1; 682#L709 assume 0 != processEnvironment_~tmp~6#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; 814#L756 assume { :end_inline_deactivatePump } true; 717#L705-1 assume { :end_inline_processEnvironment } true; 785#L628-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 702#L511-5 __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; 703#L71 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0#1; 807#L77-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 835#L638 assume { :end_inline_timeShift } true; 895#L873-2 [2021-12-28 09:41:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:00,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-28 09:41:00,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:00,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987105453] [2021-12-28 09:41:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:00,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,006 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:41:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,034 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:41:01,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:01,035 INFO L85 PathProgramCache]: Analyzing trace with hash 739616476, now seen corresponding path program 1 times [2021-12-28 09:41:01,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:01,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410081648] [2021-12-28 09:41:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:01,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:41:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:41:01,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:41:01,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410081648] [2021-12-28 09:41:01,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410081648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:41:01,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:41:01,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:41:01,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864651371] [2021-12-28 09:41:01,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:41:01,062 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:41:01,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:41:01,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:41:01,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:41:01,064 INFO L87 Difference]: Start difference. First operand 312 states and 415 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:41:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:41:01,176 INFO L93 Difference]: Finished difference Result 326 states and 412 transitions. [2021-12-28 09:41:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:41:01,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 326 states and 412 transitions. [2021-12-28 09:41:01,179 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 224 [2021-12-28 09:41:01,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 326 states to 326 states and 412 transitions. [2021-12-28 09:41:01,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 326 [2021-12-28 09:41:01,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 326 [2021-12-28 09:41:01,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 326 states and 412 transitions. [2021-12-28 09:41:01,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:41:01,195 INFO L681 BuchiCegarLoop]: Abstraction has 326 states and 412 transitions. [2021-12-28 09:41:01,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states and 412 transitions. [2021-12-28 09:41:01,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-12-28 09:41:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 326 states have (on average 1.2638036809815951) internal successors, (412), 325 states have internal predecessors, (412), 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) [2021-12-28 09:41:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 412 transitions. [2021-12-28 09:41:01,202 INFO L704 BuchiCegarLoop]: Abstraction has 326 states and 412 transitions. [2021-12-28 09:41:01,203 INFO L587 BuchiCegarLoop]: Abstraction has 326 states and 412 transitions. [2021-12-28 09:41:01,203 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:41:01,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 326 states and 412 transitions. [2021-12-28 09:41:01,204 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 224 [2021-12-28 09:41:01,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:41:01,205 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:41:01,205 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:01,205 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:01,206 INFO L791 eck$LassoCheckResult]: Stem: 1571#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1538#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret55#1, main_~retValue_acc~13#1, main_~tmp~11#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~11#1;assume { :begin_inline_select_helpers } true; 1539#L596 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1518#L589 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 1519#L604 main_#t~ret55#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~11#1 := main_#t~ret55#1;havoc main_#t~ret55#1; 1546#L1012 assume 0 != main_~tmp~11#1;assume { :begin_inline_setup } true; 1532#L989 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1533#L873-2 [2021-12-28 09:41:01,206 INFO L793 eck$LassoCheckResult]: Loop: 1533#L873-2 assume !false; 1562#L874 assume test_~splverifierCounter~0#1 < 4; 1328#L875 test_~tmp~10#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 1329#L883 assume !(0 != test_~tmp~10#1); 1489#L883-2 test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 1441#L893 assume !(0 != test_~tmp___0~3#1); 1414#L893-2 test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 1567#L903 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet54#1;havoc test_#t~nondet54#1; 1552#L911 assume 0 != test_~tmp___1~1#1; 1330#L911-2 assume { :begin_inline_timeShift } true; 1331#L621 assume !(0 != ~pumpRunning~0); 1410#L621-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret38#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 1526#L705 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; 1540#L679-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret36#1, processEnvironment__wrappee__highWaterSensor_~tmp~4#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4#1; 1541#L653-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret49#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 1565#L551-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 1545#L556-3 isHighWaterLevel_#t~ret49#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret49#1;havoc isHighWaterLevel_#t~ret49#1; 1516#L824-9 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1445#L824-11 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 1446#L830-3 processEnvironment__wrappee__highWaterSensor_#t~ret36#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~4#1 := processEnvironment__wrappee__highWaterSensor_#t~ret36#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret36#1; 1517#L657-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1511#L645-6 assume { :end_inline_processEnvironment__wrappee__base } true; 1512#L653-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1622#L679-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 1432#L705-1 assume { :end_inline_processEnvironment } true; 1621#L628-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 1620#L511-5 __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; 1618#L71 assume 0 != __utac_acc__Specification3_spec__1_~tmp~0#1; 1614#L77-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1613#L638 assume { :end_inline_timeShift } true; 1533#L873-2 [2021-12-28 09:41:01,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-28 09:41:01,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:01,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821791761] [2021-12-28 09:41:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:01,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,242 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:41:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:41:01,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1364414772, now seen corresponding path program 1 times [2021-12-28 09:41:01,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:01,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810512140] [2021-12-28 09:41:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:01,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,262 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:41:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,275 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:41:01,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:01,276 INFO L85 PathProgramCache]: Analyzing trace with hash -967223920, now seen corresponding path program 1 times [2021-12-28 09:41:01,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:01,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591824477] [2021-12-28 09:41:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:01,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:41:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:41:01,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:41:01,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591824477] [2021-12-28 09:41:01,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591824477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:41:01,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:41:01,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 09:41:01,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046262952] [2021-12-28 09:41:01,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:41:01,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:41:01,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 09:41:01,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 09:41:01,584 INFO L87 Difference]: Start difference. First operand 326 states and 412 transitions. cyclomatic complexity: 88 Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-12-28 09:41:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:41:01,784 INFO L93 Difference]: Finished difference Result 1125 states and 1415 transitions. [2021-12-28 09:41:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 09:41:01,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1125 states and 1415 transitions. [2021-12-28 09:41:01,795 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 805 [2021-12-28 09:41:01,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1125 states to 1125 states and 1415 transitions. [2021-12-28 09:41:01,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1125 [2021-12-28 09:41:01,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1125 [2021-12-28 09:41:01,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1125 states and 1415 transitions. [2021-12-28 09:41:01,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:41:01,806 INFO L681 BuchiCegarLoop]: Abstraction has 1125 states and 1415 transitions. [2021-12-28 09:41:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states and 1415 transitions. [2021-12-28 09:41:01,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 645. [2021-12-28 09:41:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 645 states have (on average 1.254263565891473) internal successors, (809), 644 states have internal predecessors, (809), 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) [2021-12-28 09:41:01,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 809 transitions. [2021-12-28 09:41:01,831 INFO L704 BuchiCegarLoop]: Abstraction has 645 states and 809 transitions. [2021-12-28 09:41:01,831 INFO L587 BuchiCegarLoop]: Abstraction has 645 states and 809 transitions. [2021-12-28 09:41:01,831 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:41:01,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 645 states and 809 transitions. [2021-12-28 09:41:01,834 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 448 [2021-12-28 09:41:01,834 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:41:01,834 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:41:01,835 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:01,835 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:41:01,835 INFO L791 eck$LassoCheckResult]: Stem: 3066#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(7, 17);call write~init~int(44, 17, 0, 1);call write~init~int(77, 17, 1, 1);call write~init~int(101, 17, 2, 1);call write~init~int(116, 17, 3, 1);call write~init~int(104, 17, 4, 1);call write~init~int(58, 17, 5, 1);call write~init~int(0, 17, 6, 1);call #Ultimate.allocInit(5, 18);call write~init~int(67, 18, 0, 1);call write~init~int(82, 18, 1, 1);call write~init~int(73, 18, 2, 1);call write~init~int(84, 18, 3, 1);call write~init~int(0, 18, 4, 1);call #Ultimate.allocInit(3, 19);call write~init~int(79, 19, 0, 1);call write~init~int(75, 19, 1, 1);call write~init~int(0, 19, 2, 1);call #Ultimate.allocInit(2, 20);call write~init~int(41, 20, 0, 1);call write~init~int(0, 20, 1, 1);call #Ultimate.allocInit(13, 21);call #Ultimate.allocInit(3, 22);call write~init~int(79, 22, 0, 1);call write~init~int(110, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(4, 23);call write~init~int(79, 23, 0, 1);call write~init~int(102, 23, 1, 1);call write~init~int(102, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(7, 24);call write~init~int(44, 24, 0, 1);call write~init~int(80, 24, 1, 1);call write~init~int(117, 24, 2, 1);call write~init~int(109, 24, 3, 1);call write~init~int(112, 24, 4, 1);call write~init~int(58, 24, 5, 1);call write~init~int(0, 24, 6, 1);call #Ultimate.allocInit(3, 25);call write~init~int(79, 25, 0, 1);call write~init~int(110, 25, 1, 1);call write~init~int(0, 25, 2, 1);call #Ultimate.allocInit(4, 26);call write~init~int(79, 26, 0, 1);call write~init~int(102, 26, 1, 1);call write~init~int(102, 26, 2, 1);call write~init~int(0, 26, 3, 1);call #Ultimate.allocInit(3, 27);call write~init~int(41, 27, 0, 1);call write~init~int(32, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(10, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 3017#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret55#1, main_~retValue_acc~13#1, main_~tmp~11#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~11#1;assume { :begin_inline_select_helpers } true; 3018#L596 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2996#L589 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 2997#L604 main_#t~ret55#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~11#1 := main_#t~ret55#1;havoc main_#t~ret55#1; 3026#L1012 assume 0 != main_~tmp~11#1;assume { :begin_inline_setup } true; 3009#L989 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~10#1, test_~tmp___0~3#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~10#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2978#L873-2 [2021-12-28 09:41:01,836 INFO L793 eck$LassoCheckResult]: Loop: 2978#L873-2 assume !false; 2979#L874 assume test_~splverifierCounter~0#1 < 4; 2799#L875 test_~tmp~10#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 2800#L883 assume !(0 != test_~tmp~10#1); 3422#L883-2 test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 3421#L893 assume !(0 != test_~tmp___0~3#1); 3419#L893-2 test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 3417#L903 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 3413#L858 assume { :end_inline_startSystem } true; 3410#L911-2 assume { :begin_inline_timeShift } true; 2880#L621 assume !(0 != ~pumpRunning~0); 2881#L621-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret38#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 3004#L705 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret37#1, processEnvironment__wrappee__methaneQuery_~tmp~5#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~5#1; 3019#L679-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret36#1, processEnvironment__wrappee__highWaterSensor_~tmp~4#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4#1; 3020#L653-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret49#1, isHighWaterLevel_~retValue_acc~11#1, isHighWaterLevel_~tmp~8#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~11#1;havoc isHighWaterLevel_~tmp~8#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 3051#L551-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 3024#L556-3 isHighWaterLevel_#t~ret49#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~8#1 := isHighWaterLevel_#t~ret49#1;havoc isHighWaterLevel_#t~ret49#1; 3025#L824-9 assume 0 != isHighWaterLevel_~tmp~8#1;isHighWaterLevel_~tmp___0~1#1 := 0; 3150#L824-11 isHighWaterLevel_~retValue_acc~11#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~11#1; 3050#L830-3 processEnvironment__wrappee__highWaterSensor_#t~ret36#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~4#1 := processEnvironment__wrappee__highWaterSensor_#t~ret36#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret36#1; 2995#L657-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2990#L645-6 assume { :end_inline_processEnvironment__wrappee__base } true; 2991#L653-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2818#L679-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 2819#L705-1 assume { :end_inline_processEnvironment } true; 2879#L628-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret4#1, __utac_acc__Specification3_spec__1_#t~ret5#1, __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_~tmp~0#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 2810#L511-5 __utac_acc__Specification3_spec__1_#t~ret4#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~0#1 := __utac_acc__Specification3_spec__1_#t~ret4#1;havoc __utac_acc__Specification3_spec__1_#t~ret4#1; 2811#L71 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~0#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~4#1;havoc getWaterLevel_~retValue_acc~4#1;getWaterLevel_~retValue_acc~4#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~4#1; 2865#L543 __utac_acc__Specification3_spec__1_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~0#1 := __utac_acc__Specification3_spec__1_#t~ret5#1;havoc __utac_acc__Specification3_spec__1_#t~ret5#1; 2866#L77 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0#1); 3379#L77-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 3060#L638 assume { :end_inline_timeShift } true; 2978#L873-2 [2021-12-28 09:41:01,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-28 09:41:01,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:01,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554506410] [2021-12-28 09:41:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:01,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,845 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:41:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,856 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:41:01,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:01,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1182375168, now seen corresponding path program 1 times [2021-12-28 09:41:01,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:01,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371393834] [2021-12-28 09:41:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:01,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,863 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:41:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,869 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:41:01,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:41:01,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1734055740, now seen corresponding path program 1 times [2021-12-28 09:41:01,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:41:01,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895227396] [2021-12-28 09:41:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:41:01,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:41:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,897 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:41:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:41:01,925 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:41:04,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:41:04 BoogieIcfgContainer [2021-12-28 09:41:04,476 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:41:04,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:41:04,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:41:04,477 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:41:04,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:41:00" (3/4) ... [2021-12-28 09:41:04,479 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:41:04,535 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:41:04,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:41:04,536 INFO L158 Benchmark]: Toolchain (without parser) took 5816.61ms. Allocated memory was 48.2MB in the beginning and 113.2MB in the end (delta: 65.0MB). Free memory was 22.9MB in the beginning and 41.0MB in the end (delta: -18.1MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2021-12-28 09:41:04,539 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 30.3MB in the beginning and 30.3MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:41:04,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.26ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.7MB in the beginning and 36.3MB in the end (delta: -13.6MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2021-12-28 09:41:04,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.66ms. Allocated memory is still 60.8MB. Free memory was 36.3MB in the beginning and 31.0MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 09:41:04,543 INFO L158 Benchmark]: Boogie Preprocessor took 76.26ms. Allocated memory is still 60.8MB. Free memory was 31.0MB in the beginning and 40.2MB in the end (delta: -9.2MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-12-28 09:41:04,543 INFO L158 Benchmark]: RCFGBuilder took 798.77ms. Allocated memory is still 60.8MB. Free memory was 40.2MB in the beginning and 38.0MB in the end (delta: 2.2MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2021-12-28 09:41:04,544 INFO L158 Benchmark]: BuchiAutomizer took 4341.13ms. Allocated memory was 60.8MB in the beginning and 113.2MB in the end (delta: 52.4MB). Free memory was 37.7MB in the beginning and 44.0MB in the end (delta: -6.3MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2021-12-28 09:41:04,544 INFO L158 Benchmark]: Witness Printer took 59.32ms. Allocated memory is still 113.2MB. Free memory was 44.0MB in the beginning and 41.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:41:04,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 48.2MB. Free memory was 30.3MB in the beginning and 30.3MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 441.26ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.7MB in the beginning and 36.3MB in the end (delta: -13.6MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.66ms. Allocated memory is still 60.8MB. Free memory was 36.3MB in the beginning and 31.0MB in the end (delta: 5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.26ms. Allocated memory is still 60.8MB. Free memory was 31.0MB in the beginning and 40.2MB in the end (delta: -9.2MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * RCFGBuilder took 798.77ms. Allocated memory is still 60.8MB. Free memory was 40.2MB in the beginning and 38.0MB in the end (delta: 2.2MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 4341.13ms. Allocated memory was 60.8MB in the beginning and 113.2MB in the end (delta: 52.4MB). Free memory was 37.7MB in the beginning and 44.0MB in the end (delta: -6.3MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. * Witness Printer took 59.32ms. Allocated memory is still 113.2MB. Free memory was 44.0MB in the beginning and 41.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 6 locations. The remainder module has 645 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 480 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 645 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3180 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3180 mSDsluCounter, 2844 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1647 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 213 IncrementalHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 1197 mSDtfsCounter, 213 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 873]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f8711d2=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b156cf4=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37cfa05f=29, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72c9ec88=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6dc5d56f=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ff52e09=0, methaneLevelCritical=0, tmp=0, tmp___0=1, \result=0, tmp=0, retValue_acc=0, retValue_acc=1, retValue_acc=1, tmp=1, retValue_acc=0, \result=1, tmp=1, \result=1, retValue_acc=0, tmp___1=0, tmp___2=29, cleanupTimeShifts=4, \result=0, tmp=0, head=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a1cbc11=0, tmp___1=0, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56e77ee1=0, waterLevel=1, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57a811a8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ad01d3f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@318cee95=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75c64a5a=0, tmp___0=0, \result=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 873]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L265] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L468] int waterLevel = 1; [L469] int methaneLevelCritical = 0; [L614] int pumpRunning = 0; [L615] int systemActive = 1; [L930] int cleanupTimeShifts = 4; [L1003] int retValue_acc ; [L1004] int tmp ; [L1008] FCALL select_helpers() [L1009] FCALL select_features() [L1010] CALL, EXPR valid_product() [L600] int retValue_acc ; [L603] retValue_acc = 1 [L604] return (retValue_acc); [L1010] RET, EXPR valid_product() [L1010] tmp = valid_product() [L1012] COND TRUE \read(tmp) [L1014] FCALL setup() [L1015] CALL runTest() [L997] CALL test() [L864] int splverifierCounter ; [L865] int tmp ; [L866] int tmp___0 ; [L867] int tmp___1 ; [L868] int tmp___2 ; [L871] splverifierCounter = 0 Loop: [L873] COND TRUE 1 [L875] COND TRUE splverifierCounter < 4 [L881] tmp = __VERIFIER_nondet_int() [L883] COND FALSE !(\read(tmp)) [L891] tmp___0 = __VERIFIER_nondet_int() [L893] COND FALSE !(\read(tmp___0)) [L901] tmp___2 = __VERIFIER_nondet_int() [L903] COND TRUE \read(tmp___2) [L905] CALL startSystem() [L857] systemActive = 1 [L905] RET startSystem() [L918] CALL timeShift() [L621] COND FALSE !(\read(pumpRunning)) [L628] COND TRUE \read(systemActive) [L630] CALL processEnvironment() [L702] int tmp ; [L705] COND FALSE !(\read(pumpRunning)) [L720] CALL processEnvironment__wrappee__methaneQuery() [L676] int tmp ; [L679] COND FALSE !(\read(pumpRunning)) [L694] CALL processEnvironment__wrappee__highWaterSensor() [L650] int tmp ; [L653] COND TRUE ! pumpRunning [L655] CALL, EXPR isHighWaterLevel() [L816] int retValue_acc ; [L817] int tmp ; [L818] int tmp___0 ; [L822] CALL, EXPR isHighWaterSensorDry() [L548] int retValue_acc ; [L551] COND TRUE waterLevel < 2 [L552] retValue_acc = 1 [L553] return (retValue_acc); [L822] RET, EXPR isHighWaterSensorDry() [L822] tmp = isHighWaterSensorDry() [L824] COND TRUE \read(tmp) [L825] tmp___0 = 0 [L829] retValue_acc = tmp___0 [L830] return (retValue_acc); [L655] RET, EXPR isHighWaterLevel() [L655] tmp = isHighWaterLevel() [L657] COND FALSE !(\read(tmp)) [L663] FCALL processEnvironment__wrappee__base() [L694] RET processEnvironment__wrappee__highWaterSensor() [L720] RET processEnvironment__wrappee__methaneQuery() [L630] RET processEnvironment() [L636] CALL __utac_acc__Specification3_spec__1() [L63] int tmp ; [L64] int tmp___0 ; [L65] int tmp___1 ; [L69] CALL, EXPR isMethaneLevelCritical() [L507] int retValue_acc ; [L510] retValue_acc = methaneLevelCritical [L511] return (retValue_acc); [L69] RET, EXPR isMethaneLevelCritical() [L69] tmp = isMethaneLevelCritical() [L71] COND FALSE !(\read(tmp)) [L75] CALL, EXPR getWaterLevel() [L539] int retValue_acc ; [L542] retValue_acc = waterLevel [L543] return (retValue_acc); [L75] RET, EXPR getWaterLevel() [L75] tmp___0 = getWaterLevel() [L77] COND FALSE !(tmp___0 == 2) [L636] RET __utac_acc__Specification3_spec__1() [L918] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-28 09:41:04,593 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)