./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product55.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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_product55.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 4cb84f4cda4da5ed2f20ac89ec7baabe2dc4055e 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:26:00,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:26:00,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:26:00,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:26:00,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:26:00,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:26:00,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:26:00,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:26:00,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:26:00,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:26:00,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:26:00,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:26:00,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:26:00,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:26:00,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:26:00,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:26:00,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:26:00,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:26:00,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:26:00,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:26:00,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:26:00,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:26:00,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:26:00,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:26:00,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:26:00,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:26:00,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:26:00,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:26:00,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:26:00,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:26:00,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:26:00,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:26:00,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:26:00,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:26:00,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:26:00,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:26:00,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:26:00,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:26:00,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:26:00,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:26:00,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:26:00,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:26:00,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:26:00,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:26:00,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:26:00,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:26:00,544 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:26:00,544 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:26:00,544 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:26:00,545 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:26:00,545 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:26:00,545 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:26:00,545 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:26:00,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:26:00,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:26:00,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:26:00,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:26:00,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:26:00,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:26:00,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:26:00,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:26:00,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:26:00,547 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:26:00,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:26:00,547 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:26:00,547 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:26:00,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:26:00,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:26:00,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:26:00,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:26:00,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:26:00,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:26:00,549 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:26:00,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cb84f4cda4da5ed2f20ac89ec7baabe2dc4055e [2021-07-06 20:26:00,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:26:00,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:26:00,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:26:00,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:26:00,805 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:26:00,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product55.cil.c [2021-07-06 20:26:00,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e250b35f9/8f48eb758bde4c44ab3c8279f62e77bf/FLAGa1f5e2ca3 [2021-07-06 20:26:01,323 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:26:01,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product55.cil.c [2021-07-06 20:26:01,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e250b35f9/8f48eb758bde4c44ab3c8279f62e77bf/FLAGa1f5e2ca3 [2021-07-06 20:26:01,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e250b35f9/8f48eb758bde4c44ab3c8279f62e77bf [2021-07-06 20:26:01,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:26:01,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:26:01,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:26:01,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:26:01,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:26:01,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:26:01" (1/1) ... [2021-07-06 20:26:01,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbfb8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:01, skipping insertion in model container [2021-07-06 20:26:01,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:26:01" (1/1) ... [2021-07-06 20:26:01,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:26:01,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:26:01,920 WARN L224 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_product55.cil.c[3453,3466] [2021-07-06 20:26:02,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:26:02,031 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:26:02,061 WARN L224 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_product55.cil.c[3453,3466] [2021-07-06 20:26:02,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:26:02,106 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:26:02,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02 WrapperNode [2021-07-06 20:26:02,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:26:02,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:26:02,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:26:02,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:26:02,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:26:02,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:26:02,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:26:02,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:26:02,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:26:02,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:26:02,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:26:02,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:26:02,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (1/1) ... [2021-07-06 20:26:02,196 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:26:02,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:26:02,238 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) [2021-07-06 20:26:02,253 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 [2021-07-06 20:26:02,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:26:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:26:02,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:26:02,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:26:03,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:26:03,003 INFO L299 CfgBuilder]: Removed 286 assume(true) statements. [2021-07-06 20:26:03,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:26:03 BoogieIcfgContainer [2021-07-06 20:26:03,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:26:03,005 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:26:03,005 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:26:03,007 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:26:03,007 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:26:03,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:26:01" (1/3) ... [2021-07-06 20:26:03,008 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d193da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:26:03, skipping insertion in model container [2021-07-06 20:26:03,008 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:26:03,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:26:02" (2/3) ... [2021-07-06 20:26:03,009 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d193da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:26:03, skipping insertion in model container [2021-07-06 20:26:03,009 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:26:03,009 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:26:03" (3/3) ... [2021-07-06 20:26:03,010 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product55.cil.c [2021-07-06 20:26:03,036 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:26:03,036 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:26:03,036 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:26:03,037 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:26:03,037 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:26:03,037 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:26:03,037 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:26:03,037 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:26:03,049 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 194 states, 193 states have (on average 1.538860103626943) internal successors, (297), 193 states have internal predecessors, (297), 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) [2021-07-06 20:26:03,069 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-07-06 20:26:03,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:03,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:03,074 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:03,075 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:26:03,075 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:26:03,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 194 states, 193 states have (on average 1.538860103626943) internal successors, (297), 193 states have internal predecessors, (297), 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) [2021-07-06 20:26:03,085 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-07-06 20:26:03,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:03,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:03,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:03,086 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:26:03,090 INFO L791 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 13#L-1true havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~9, main_~tmp~3;havoc main_~retValue_acc~9;havoc main_~tmp~3; 148#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 44#L75true main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 135#L651true assume 0 != main_~tmp~3; 80#L627true havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 41#L923-1true [2021-07-06 20:26:03,090 INFO L793 eck$LassoCheckResult]: Loop: 41#L923-1true assume !false; 149#L953true assume test_~splverifierCounter~0 < 4; 123#L954true test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 28#L962true assume !(0 != test_~tmp~10); 29#L962-1true test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 166#L972true assume !(0 != test_~tmp___0~3); 168#L972-1true test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 193#L982true assume 0 != test_~tmp___2~0; 186#L988-1true assume !(0 != ~pumpRunning~0); 72#L677true assume !(0 != ~systemActive~0); 133#L684true havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 22#L131-1true __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 170#L917true assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 41#L923-1true [2021-07-06 20:26:03,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:03,094 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:26:03,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:03,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755709183] [2021-07-06 20:26:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:03,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:03,240 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:03,302 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:03,324 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:03,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1667892546, now seen corresponding path program 1 times [2021-07-06 20:26:03,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:03,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054777301] [2021-07-06 20:26:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:03,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:03,347 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:03,350 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:03,353 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:03,354 INFO L82 PathProgramCache]: Analyzing trace with hash 46386392, now seen corresponding path program 1 times [2021-07-06 20:26:03,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:03,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352688308] [2021-07-06 20:26:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:03,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:26:03,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:03,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:03,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:03,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:03,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:03,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:03,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:03,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:26:03,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:03,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:26:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:26:03,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:26:03,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352688308] [2021-07-06 20:26:03,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352688308] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:26:03,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:26:03,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:26:03,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510997676] [2021-07-06 20:26:03,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:03,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-07-06 20:26:03,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:26:03,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:26:03,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:26:03,510 INFO L87 Difference]: Start difference. First operand has 194 states, 193 states have (on average 1.538860103626943) internal successors, (297), 193 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:26:03,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:26:03,781 INFO L93 Difference]: Finished difference Result 438 states and 645 transitions. [2021-07-06 20:26:03,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 20:26:03,783 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 438 states and 645 transitions. [2021-07-06 20:26:03,803 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 285 [2021-07-06 20:26:03,810 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 438 states to 417 states and 624 transitions. [2021-07-06 20:26:03,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 417 [2021-07-06 20:26:03,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 417 [2021-07-06 20:26:03,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 417 states and 624 transitions. [2021-07-06 20:26:03,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:26:03,815 INFO L681 BuchiCegarLoop]: Abstraction has 417 states and 624 transitions. [2021-07-06 20:26:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states and 624 transitions. [2021-07-06 20:26:03,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 234. [2021-07-06 20:26:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 234 states have (on average 1.4871794871794872) internal successors, (348), 233 states have internal predecessors, (348), 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) [2021-07-06 20:26:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 348 transitions. [2021-07-06 20:26:03,859 INFO L704 BuchiCegarLoop]: Abstraction has 234 states and 348 transitions. [2021-07-06 20:26:03,859 INFO L587 BuchiCegarLoop]: Abstraction has 234 states and 348 transitions. [2021-07-06 20:26:03,859 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:26:03,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 234 states and 348 transitions. [2021-07-06 20:26:03,862 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 160 [2021-07-06 20:26:03,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:03,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:03,865 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:03,865 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:26:03,866 INFO L791 eck$LassoCheckResult]: Stem: 814#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 684#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~9, main_~tmp~3;havoc main_~retValue_acc~9;havoc main_~tmp~3; 685#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 759#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 731#L651 assume 0 != main_~tmp~3; 732#L627 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 758#L923-1 [2021-07-06 20:26:03,869 INFO L793 eck$LassoCheckResult]: Loop: 758#L923-1 assume !false; 760#L953 assume test_~splverifierCounter~0 < 4; 713#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 714#L962 assume !(0 != test_~tmp~10); 726#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 730#L972 assume !(0 != test_~tmp___0~3); 790#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 794#L982 assume 0 != test_~tmp___2~0; 818#L988-1 assume !(0 != ~pumpRunning~0); 768#L677 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 719#L761 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret55, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 720#L735-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret54, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 665#L709-3 assume !(0 == ~pumpRunning~0); 652#L684 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 705#L131-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 706#L917 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 758#L923-1 [2021-07-06 20:26:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:03,871 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:26:03,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:03,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488049934] [2021-07-06 20:26:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:03,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:03,940 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:03,980 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,009 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:04,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:04,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2101003031, now seen corresponding path program 1 times [2021-07-06 20:26:04,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:04,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489079081] [2021-07-06 20:26:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:04,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:26:04,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:04,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:26:04,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:04,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:04,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:04,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:26:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:26:04,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:26:04,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489079081] [2021-07-06 20:26:04,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489079081] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:26:04,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:26:04,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:26:04,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081146186] [2021-07-06 20:26:04,026 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:26:04,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:26:04,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:26:04,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:26:04,027 INFO L87 Difference]: Start difference. First operand 234 states and 348 transitions. cyclomatic complexity: 117 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-07-06 20:26:04,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:26:04,126 INFO L93 Difference]: Finished difference Result 243 states and 337 transitions. [2021-07-06 20:26:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:26:04,127 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 243 states and 337 transitions. [2021-07-06 20:26:04,130 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 170 [2021-07-06 20:26:04,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 243 states to 243 states and 337 transitions. [2021-07-06 20:26:04,133 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 243 [2021-07-06 20:26:04,133 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 243 [2021-07-06 20:26:04,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 243 states and 337 transitions. [2021-07-06 20:26:04,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:26:04,135 INFO L681 BuchiCegarLoop]: Abstraction has 243 states and 337 transitions. [2021-07-06 20:26:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states and 337 transitions. [2021-07-06 20:26:04,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-07-06 20:26:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 243 states have (on average 1.3868312757201646) internal successors, (337), 242 states have internal predecessors, (337), 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) [2021-07-06 20:26:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 337 transitions. [2021-07-06 20:26:04,141 INFO L704 BuchiCegarLoop]: Abstraction has 243 states and 337 transitions. [2021-07-06 20:26:04,141 INFO L587 BuchiCegarLoop]: Abstraction has 243 states and 337 transitions. [2021-07-06 20:26:04,141 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:26:04,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 243 states and 337 transitions. [2021-07-06 20:26:04,142 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 170 [2021-07-06 20:26:04,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:04,142 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:04,143 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:04,143 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:26:04,143 INFO L791 eck$LassoCheckResult]: Stem: 1276#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 1152#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~9, main_~tmp~3;havoc main_~retValue_acc~9;havoc main_~tmp~3; 1153#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1221#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 1193#L651 assume 0 != main_~tmp~3; 1194#L627 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1220#L923-1 [2021-07-06 20:26:04,143 INFO L793 eck$LassoCheckResult]: Loop: 1220#L923-1 assume !false; 1222#L953 assume test_~splverifierCounter~0 < 4; 1176#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 1177#L962 assume !(0 != test_~tmp~10); 1186#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 1192#L972 assume !(0 != test_~tmp___0~3); 1351#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 1349#L982 assume 0 != test_~tmp___2~0; 1281#L988-1 assume !(0 != ~pumpRunning~0); 1282#L677 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 1179#L761 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret55, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 1180#L735-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret54, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1141#L709-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1142#L171-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1229#L176-3 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 1148#L863-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~0 := 0; 1149#L863-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1294#L869-3 processEnvironment__wrappee__highWaterSensor_#t~ret54 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret54;havoc processEnvironment__wrappee__highWaterSensor_#t~ret54; 1267#L713-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1181#L684 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1190#L131-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 1259#L917 assume 0 != __utac_acc__Specification3_spec__1_~tmp~9; 1220#L923-1 [2021-07-06 20:26:04,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:04,144 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:26:04,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:04,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480762560] [2021-07-06 20:26:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:04,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,164 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,183 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,189 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:04,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:04,190 INFO L82 PathProgramCache]: Analyzing trace with hash 2033396629, now seen corresponding path program 1 times [2021-07-06 20:26:04,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:04,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117491093] [2021-07-06 20:26:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:04,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,194 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,196 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,199 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:04,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1008265541, now seen corresponding path program 1 times [2021-07-06 20:26:04,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:04,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669056782] [2021-07-06 20:26:04,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:04,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:26:04,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:04,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:04,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:04,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:04,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:04,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:26:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:26:04,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:26:04,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669056782] [2021-07-06 20:26:04,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669056782] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:26:04,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:26:04,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:26:04,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759479403] [2021-07-06 20:26:04,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:04,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-07-06 20:26:04,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:26:04,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:26:04,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:26:04,368 INFO L87 Difference]: Start difference. First operand 243 states and 337 transitions. cyclomatic complexity: 97 Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-07-06 20:26:04,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:26:04,466 INFO L93 Difference]: Finished difference Result 806 states and 1118 transitions. [2021-07-06 20:26:04,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:26:04,466 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 806 states and 1118 transitions. [2021-07-06 20:26:04,471 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 595 [2021-07-06 20:26:04,474 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 806 states to 806 states and 1118 transitions. [2021-07-06 20:26:04,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 806 [2021-07-06 20:26:04,475 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 806 [2021-07-06 20:26:04,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 806 states and 1118 transitions. [2021-07-06 20:26:04,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:26:04,476 INFO L681 BuchiCegarLoop]: Abstraction has 806 states and 1118 transitions. [2021-07-06 20:26:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states and 1118 transitions. [2021-07-06 20:26:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 480. [2021-07-06 20:26:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 480 states have (on average 1.3666666666666667) internal successors, (656), 479 states have internal predecessors, (656), 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) [2021-07-06 20:26:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 656 transitions. [2021-07-06 20:26:04,497 INFO L704 BuchiCegarLoop]: Abstraction has 480 states and 656 transitions. [2021-07-06 20:26:04,499 INFO L587 BuchiCegarLoop]: Abstraction has 480 states and 656 transitions. [2021-07-06 20:26:04,499 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 20:26:04,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 480 states and 656 transitions. [2021-07-06 20:26:04,501 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 340 [2021-07-06 20:26:04,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:26:04,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:26:04,503 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:26:04,503 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] [2021-07-06 20:26:04,515 INFO L791 eck$LassoCheckResult]: Stem: 2352#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1; 2221#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~9, main_~tmp~3;havoc main_~retValue_acc~9;havoc main_~tmp~3; 2222#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 2292#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 2261#L651 assume 0 != main_~tmp~3; 2262#L627 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2366#L923-1 [2021-07-06 20:26:04,517 INFO L793 eck$LassoCheckResult]: Loop: 2366#L923-1 assume !false; 2580#L953 assume test_~splverifierCounter~0 < 4; 2581#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 2668#L962 assume !(0 != test_~tmp~10); 2665#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 2662#L972 assume !(0 != test_~tmp___0~3); 2659#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 2654#L982 assume 0 != test_~tmp___2~0; 2639#L988-1 assume !(0 != ~pumpRunning~0); 2361#L677 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 2247#L761 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret55, processEnvironment__wrappee__lowWaterSensor_~tmp~5;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5; 2248#L735-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret54, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 2208#L709-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 2209#L171-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 2300#L176-3 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 2619#L863-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~0 := 0; 2611#L863-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 2379#L869-3 processEnvironment__wrappee__highWaterSensor_#t~ret54 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret54;havoc processEnvironment__wrappee__highWaterSensor_#t~ret54; 2343#L713-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 2249#L684 havoc __utac_acc__Specification3_spec__1_#t~ret76, __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_~tmp~9, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~9;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 2233#L131-1 __utac_acc__Specification3_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~9 := __utac_acc__Specification3_spec__1_#t~ret76;havoc __utac_acc__Specification3_spec__1_#t~ret76; 2234#L917 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~9);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~3;havoc getWaterLevel_~retValue_acc~3;getWaterLevel_~retValue_acc~3 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~3; 2320#L163 __utac_acc__Specification3_spec__1_#t~ret77 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 2321#L923 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 2366#L923-1 [2021-07-06 20:26:04,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:04,520 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-07-06 20:26:04,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:04,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093642719] [2021-07-06 20:26:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:04,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,542 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,584 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:04,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:04,605 INFO L82 PathProgramCache]: Analyzing trace with hash -115947609, now seen corresponding path program 1 times [2021-07-06 20:26:04,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:04,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679455117] [2021-07-06 20:26:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:04,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,608 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,610 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,612 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:04,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:26:04,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1719435597, now seen corresponding path program 1 times [2021-07-06 20:26:04,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:26:04,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520136161] [2021-07-06 20:26:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:26:04,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:26:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,641 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:26:04,666 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:26:04,674 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:26:04,814 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-07-06 20:26:04,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:04,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-07-06 20:26:45,658 WARN L205 SmtUtils]: Spent 40.78 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:26:45,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:26:45,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:27:05,654 WARN L205 SmtUtils]: Spent 19.91 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:27:05,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:27:05 BoogieIcfgContainer [2021-07-06 20:27:05,729 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:27:05,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:27:05,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:27:05,732 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:27:05,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:26:03" (3/4) ... [2021-07-06 20:27:05,734 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:27:05,761 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:27:05,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:27:05,762 INFO L168 Benchmark]: Toolchain (without parser) took 64062.80 ms. Allocated memory was 58.7 MB in the beginning and 167.8 MB in the end (delta: 109.1 MB). Free memory was 41.5 MB in the beginning and 121.5 MB in the end (delta: -79.9 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:05,763 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 29.5 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:27:05,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.30 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 30.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:05,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.45 ms. Allocated memory is still 58.7 MB. Free memory was 30.2 MB in the beginning and 38.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:05,776 INFO L168 Benchmark]: Boogie Preprocessor took 31.31 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 35.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:05,777 INFO L168 Benchmark]: RCFGBuilder took 813.10 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 35.2 MB in the beginning and 61.0 MB in the end (delta: -25.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:05,777 INFO L168 Benchmark]: BuchiAutomizer took 62724.55 ms. Allocated memory was 86.0 MB in the beginning and 167.8 MB in the end (delta: 81.8 MB). Free memory was 61.0 MB in the beginning and 123.5 MB in the end (delta: -62.6 MB). Peak memory consumption was 105.3 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:05,777 INFO L168 Benchmark]: Witness Printer took 32.28 ms. Allocated memory is still 167.8 MB. Free memory was 123.5 MB in the beginning and 121.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:27:05,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 48.2 MB. Free memory was 29.6 MB in the beginning and 29.5 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.30 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 30.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.45 ms. Allocated memory is still 58.7 MB. Free memory was 30.2 MB in the beginning and 38.8 MB in the end (delta: -8.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.31 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 35.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 813.10 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 35.2 MB in the beginning and 61.0 MB in the end (delta: -25.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 62724.55 ms. Allocated memory was 86.0 MB in the beginning and 167.8 MB in the end (delta: 81.8 MB). Free memory was 61.0 MB in the beginning and 123.5 MB in the end (delta: -62.6 MB). Peak memory consumption was 105.3 MB. Max. memory is 16.1 GB. * Witness Printer took 32.28 ms. Allocated memory is still 167.8 MB. Free memory was 123.5 MB in the beginning and 121.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 480 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 62.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 61.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 60.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 509 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 480 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 831 SDtfs, 2172 SDslu, 2232 SDs, 0 SdLazy, 154 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 295.0ms Time 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: 952]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=7450} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=7450, NULL=21049, NULL=21056, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75f00455=0, NULL=7457, methaneLevelCritical=0, NULL=0, tmp___1=0, NULL=0, NULL=21044, NULL=21046, cleanupTimeShifts=4, NULL=7451, tmp=0, NULL=21048, waterLevel=1, NULL=0, NULL=0, retValue_acc=1, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, NULL=0, \result=1, NULL=7455, NULL=0, retValue_acc=0, NULL=0, tmp=1, tmp___0=0, NULL=21055, NULL=7456, NULL=21052, head=0, tmp=0, NULL=0, NULL=0, NULL=7452, NULL=21040, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@608f0ccd=0, NULL=0, NULL=0, NULL=7454, NULL=21043, retValue_acc=0, NULL=21047, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30dfebe9=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7efaf7e3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69b82613=0, NULL=0, NULL=0, NULL=21039, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3969f3b5=0, tmp=0, NULL=0, tmp=0, NULL=21045, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c7bcd37=0, tmp___0=1, NULL=0, systemActive=1, NULL=21042, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c897c5b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27eb7e44=46, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a0a343d=0, \result=0, retValue_acc=0, NULL=21057, NULL=0, NULL=21038, NULL=21050, \result=0, NULL=0, NULL=0, NULL=21051, NULL=21053, NULL=21037, retValue_acc=1, tmp=0, tmp___2=46, splverifierCounter=0, NULL=0, NULL=0, NULL=0, \result=0, NULL=7453, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29a5f7c0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c7bab69=0, tmp___1=0, NULL=21041, NULL=0, NULL=0, NULL=0, NULL=21054} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L88] int waterLevel = 1; [L89] int methaneLevelCritical = 0; [L369] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L566] int cleanupTimeShifts = 4; [L669] int pumpRunning = 0; [L670] int systemActive = 1; [L642] int retValue_acc ; [L643] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L649] tmp = valid_product() [L651] COND TRUE \read(tmp) [L943] int splverifierCounter ; [L944] int tmp ; [L945] int tmp___0 ; [L946] int tmp___1 ; [L947] int tmp___2 ; [L950] splverifierCounter = 0 Loop: [L952] COND TRUE 1 [L954] COND TRUE splverifierCounter < 4 [L960] tmp = __VERIFIER_nondet_int() [L962] COND FALSE !(\read(tmp)) [L970] tmp___0 = __VERIFIER_nondet_int() [L972] COND FALSE !(\read(tmp___0)) [L980] tmp___2 = __VERIFIER_nondet_int() [L982] COND TRUE \read(tmp___2) [L677] COND FALSE !(\read(pumpRunning)) [L684] COND TRUE \read(systemActive) [L758] int tmp ; [L761] COND FALSE !(\read(pumpRunning)) [L732] int tmp ; [L735] COND FALSE !(\read(pumpRunning)) [L706] int tmp ; [L709] COND TRUE ! pumpRunning [L855] int retValue_acc ; [L856] int tmp ; [L857] int tmp___0 ; [L168] int retValue_acc ; [L171] COND TRUE waterLevel < 2 [L172] retValue_acc = 1 [L173] return (retValue_acc); [L861] tmp = isHighWaterSensorDry() [L863] COND TRUE \read(tmp) [L864] tmp___0 = 0 [L868] retValue_acc = tmp___0 [L869] return (retValue_acc); [L711] tmp = isHighWaterLevel() [L713] COND FALSE !(\read(tmp)) [L909] int tmp ; [L910] int tmp___0 ; [L911] int tmp___1 ; [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L915] tmp = isMethaneLevelCritical() [L917] COND FALSE !(\read(tmp)) [L159] int retValue_acc ; [L162] retValue_acc = waterLevel [L163] return (retValue_acc); [L921] tmp___0 = getWaterLevel() [L923] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:27:05,832 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...