./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cdb76ce0a10208029e2bf0c2c9347003489ff508 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:06:15,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:06:15,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:06:15,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:06:15,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:06:15,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:06:15,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:06:15,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:06:15,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:06:15,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:06:15,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:06:15,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:06:15,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:06:15,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:06:15,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:06:15,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:06:15,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:06:15,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:06:15,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:06:15,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:06:15,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:06:15,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:06:15,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:06:15,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:06:15,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:06:15,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:06:15,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:06:15,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:06:15,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:06:15,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:06:15,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:06:15,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:06:15,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:06:15,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:06:15,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:06:15,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:06:15,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:06:15,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:06:15,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:06:15,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:06:15,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:06:15,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:06:15,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:06:15,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:06:15,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:06:15,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:06:15,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:06:15,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:06:15,532 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:06:15,532 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:06:15,532 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:06:15,532 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:06:15,533 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:06:15,533 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:06:15,533 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:06:15,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:06:15,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:06:15,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:06:15,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:06:15,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:06:15,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:06:15,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:06:15,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:06:15,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:06:15,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:06:15,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:06:15,545 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:06:15,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:06:15,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:06:15,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:06:15,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:06:15,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:06:15,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:06:15,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:06:15,548 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:06:15,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cdb76ce0a10208029e2bf0c2c9347003489ff508 [2021-08-27 16:06:15,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:06:15,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:06:15,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:06:15,814 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:06:15,814 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:06:15,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c [2021-08-27 16:06:15,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aedf3ab3/3fb7792d2d8546c6ac967572c3fbabf5/FLAG7cd6002f8 [2021-08-27 16:06:16,190 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:06:16,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c [2021-08-27 16:06:16,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aedf3ab3/3fb7792d2d8546c6ac967572c3fbabf5/FLAG7cd6002f8 [2021-08-27 16:06:16,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aedf3ab3/3fb7792d2d8546c6ac967572c3fbabf5 [2021-08-27 16:06:16,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:06:16,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:06:16,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:06:16,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:06:16,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:06:16,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:16,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c78ac5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16, skipping insertion in model container [2021-08-27 16:06:16,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:16,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:06:16,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:06:16,816 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c[12348,12361] [2021-08-27 16:06:16,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:06:16,881 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:06:16,911 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c[12348,12361] [2021-08-27 16:06:16,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:06:16,950 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:06:16,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16 WrapperNode [2021-08-27 16:06:16,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:06:16,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:06:16,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:06:16,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:06:16,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:16,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:17,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:06:17,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:06:17,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:06:17,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:06:17,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:17,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:17,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:17,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:17,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:17,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:17,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:17,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:06:17,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:06:17,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:06:17,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:06:17,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (1/1) ... [2021-08-27 16:06:17,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:06:17,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:06:17,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:06:17,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:06:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:06:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:06:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:06:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:06:17,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:06:17,940 INFO L299 CfgBuilder]: Removed 352 assume(true) statements. [2021-08-27 16:06:17,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:06:17 BoogieIcfgContainer [2021-08-27 16:06:17,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:06:17,943 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:06:17,943 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:06:17,945 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:06:17,946 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:06:17,946 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:06:16" (1/3) ... [2021-08-27 16:06:17,947 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64056e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:06:17, skipping insertion in model container [2021-08-27 16:06:17,947 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:06:17,947 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:16" (2/3) ... [2021-08-27 16:06:17,947 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64056e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:06:17, skipping insertion in model container [2021-08-27 16:06:17,948 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:06:17,948 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:06:17" (3/3) ... [2021-08-27 16:06:17,948 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2021-08-27 16:06:17,982 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:06:17,982 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:06:17,982 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:06:17,982 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:06:17,982 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:06:17,982 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:06:17,982 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:06:17,982 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:06:18,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 226 states, 225 states have (on average 1.511111111111111) internal successors, (340), 225 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:18,033 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 16:06:18,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:18,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:18,039 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,039 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,039 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:06:18,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 226 states, 225 states have (on average 1.511111111111111) internal successors, (340), 225 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:18,047 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 16:06:18,047 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:18,047 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:18,047 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,047 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,050 INFO L791 eck$LassoCheckResult]: Stem: 218#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 148#L-1true havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 73#L694true havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 138#L702true main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 214#L500true assume 0 != main_~tmp~3; 29#L471true ~methAndRunningLastTime~0 := 0; 43#L531true havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 162#L542-1true [2021-08-27 16:06:18,051 INFO L793 eck$LassoCheckResult]: Loop: 162#L542-1true assume !false; 172#L719true assume test_~splverifierCounter~0 < 4; 35#L720true test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 60#L728true assume !(0 != test_~tmp~5); 157#L728-1true test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 53#L738true assume !(0 != test_~tmp___0~1); 36#L738-1true test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 42#L748true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 164#L756-2true assume !(0 != ~pumpRunning~0); 215#L784true assume !(0 != ~systemActive~0); 37#L791true havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 3#L612-5true __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 121#L542true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 162#L542-1true [2021-08-27 16:06:18,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:18,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:06:18,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:18,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544209475] [2021-08-27 16:06:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:18,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:18,251 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:18,383 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:18,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:18,387 INFO L82 PathProgramCache]: Analyzing trace with hash 10110539, now seen corresponding path program 1 times [2021-08-27 16:06:18,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:18,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316274216] [2021-08-27 16:06:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:18,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:06:18,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:18,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316274216] [2021-08-27 16:06:18,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316274216] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:18,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:18,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:06:18,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892853056] [2021-08-27 16:06:18,441 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:18,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:06:18,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:06:18,459 INFO L87 Difference]: Start difference. First operand has 226 states, 225 states have (on average 1.511111111111111) internal successors, (340), 225 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:18,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:18,508 INFO L93 Difference]: Finished difference Result 226 states and 330 transitions. [2021-08-27 16:06:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:06:18,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 226 states and 330 transitions. [2021-08-27 16:06:18,513 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2021-08-27 16:06:18,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 226 states to 219 states and 322 transitions. [2021-08-27 16:06:18,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 219 [2021-08-27 16:06:18,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 219 [2021-08-27 16:06:18,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 322 transitions. [2021-08-27 16:06:18,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:18,527 INFO L681 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2021-08-27 16:06:18,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 322 transitions. [2021-08-27 16:06:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-08-27 16:06:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 219 states have (on average 1.4703196347031964) internal successors, (322), 218 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 322 transitions. [2021-08-27 16:06:18,552 INFO L704 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2021-08-27 16:06:18,553 INFO L587 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2021-08-27 16:06:18,553 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:06:18,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 219 states and 322 transitions. [2021-08-27 16:06:18,554 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2021-08-27 16:06:18,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:18,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:18,555 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,555 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,555 INFO L791 eck$LassoCheckResult]: Stem: 679#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 654#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 577#L694 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 578#L702 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 648#L500 assume 0 != main_~tmp~3; 507#L471 ~methAndRunningLastTime~0 := 0; 508#L531 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 527#L542-1 [2021-08-27 16:06:18,555 INFO L793 eck$LassoCheckResult]: Loop: 527#L542-1 assume !false; 659#L719 assume test_~splverifierCounter~0 < 4; 519#L720 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 520#L728 assume !(0 != test_~tmp~5); 559#L728-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 546#L738 assume !(0 != test_~tmp___0~1); 521#L738-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 522#L748 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 532#L756-2 assume !(0 != ~pumpRunning~0); 637#L784 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 515#L868 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret61, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 516#L842-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 552#L816-3 assume !(0 == ~pumpRunning~0); 523#L791 havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 461#L612-5 __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 462#L542 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 527#L542-1 [2021-08-27 16:06:18,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:18,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:06:18,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:18,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265377929] [2021-08-27 16:06:18,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:18,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:18,588 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:18,616 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:18,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1423526727, now seen corresponding path program 1 times [2021-08-27 16:06:18,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:18,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482147179] [2021-08-27 16:06:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:18,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:06:18,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:18,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482147179] [2021-08-27 16:06:18,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482147179] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:18,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:18,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:06:18,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539887782] [2021-08-27 16:06:18,633 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:18,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:06:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:06:18,634 INFO L87 Difference]: Start difference. First operand 219 states and 322 transitions. cyclomatic complexity: 105 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) [2021-08-27 16:06:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:18,717 INFO L93 Difference]: Finished difference Result 218 states and 304 transitions. [2021-08-27 16:06:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:06:18,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 218 states and 304 transitions. [2021-08-27 16:06:18,720 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2021-08-27 16:06:18,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 218 states to 218 states and 304 transitions. [2021-08-27 16:06:18,721 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 218 [2021-08-27 16:06:18,721 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2021-08-27 16:06:18,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 218 states and 304 transitions. [2021-08-27 16:06:18,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:18,722 INFO L681 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2021-08-27 16:06:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states and 304 transitions. [2021-08-27 16:06:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-08-27 16:06:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 218 states have (on average 1.3944954128440368) internal successors, (304), 217 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 304 transitions. [2021-08-27 16:06:18,728 INFO L704 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2021-08-27 16:06:18,728 INFO L587 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2021-08-27 16:06:18,728 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:06:18,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 304 transitions. [2021-08-27 16:06:18,729 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2021-08-27 16:06:18,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:18,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:18,730 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,730 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,730 INFO L791 eck$LassoCheckResult]: Stem: 1079#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 999#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 1000#L694 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 968#L702 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 969#L500 assume 0 != main_~tmp~3; 970#L471 ~methAndRunningLastTime~0 := 0; 971#L531 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 933#L542-1 [2021-08-27 16:06:18,730 INFO L793 eck$LassoCheckResult]: Loop: 933#L542-1 assume !false; 1016#L719 assume test_~splverifierCounter~0 < 4; 981#L720 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 982#L728 assume !(0 != test_~tmp~5); 1010#L728-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 1011#L738 assume !(0 != test_~tmp___0~1); 983#L738-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 984#L748 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 993#L756-2 assume !(0 != ~pumpRunning~0); 1020#L784 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 977#L868 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret61, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 978#L842-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1024#L816-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~10, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~10;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1014#L652-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~6 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1015#L657-3 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~10 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 1017#L987-9 assume 0 != isHighWaterLevel_~tmp~10;isHighWaterLevel_~tmp___0~2 := 0; 1077#L987-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1047#L993-3 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 921#L820-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 922#L791 havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 904#L612-5 __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 905#L542 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 933#L542-1 [2021-08-27 16:06:18,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:18,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:06:18,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:18,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200333356] [2021-08-27 16:06:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:18,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:18,751 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:18,782 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:18,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:18,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1081607637, now seen corresponding path program 1 times [2021-08-27 16:06:18,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:18,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792122058] [2021-08-27 16:06:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:18,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:06:18,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:18,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792122058] [2021-08-27 16:06:18,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792122058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:18,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:18,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:06:18,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120215807] [2021-08-27 16:06:18,805 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:18,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:06:18,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:06:18,806 INFO L87 Difference]: Start difference. First operand 218 states and 304 transitions. cyclomatic complexity: 88 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:18,945 INFO L93 Difference]: Finished difference Result 604 states and 826 transitions. [2021-08-27 16:06:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:06:18,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 604 states and 826 transitions. [2021-08-27 16:06:18,950 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 420 [2021-08-27 16:06:18,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 604 states to 604 states and 826 transitions. [2021-08-27 16:06:18,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 604 [2021-08-27 16:06:18,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 604 [2021-08-27 16:06:18,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 604 states and 826 transitions. [2021-08-27 16:06:18,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:18,957 INFO L681 BuchiCegarLoop]: Abstraction has 604 states and 826 transitions. [2021-08-27 16:06:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states and 826 transitions. [2021-08-27 16:06:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 236. [2021-08-27 16:06:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 236 states have (on average 1.3644067796610169) internal successors, (322), 235 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:18,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 322 transitions. [2021-08-27 16:06:18,974 INFO L704 BuchiCegarLoop]: Abstraction has 236 states and 322 transitions. [2021-08-27 16:06:18,974 INFO L587 BuchiCegarLoop]: Abstraction has 236 states and 322 transitions. [2021-08-27 16:06:18,974 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:06:18,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 236 states and 322 transitions. [2021-08-27 16:06:18,975 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 160 [2021-08-27 16:06:18,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:18,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:18,975 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,975 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:18,975 INFO L791 eck$LassoCheckResult]: Stem: 1930#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1835#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 1836#L694 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 1802#L702 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 1803#L500 assume 0 != main_~tmp~3; 1804#L471 ~methAndRunningLastTime~0 := 0; 1805#L531 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1837#L542-1 [2021-08-27 16:06:18,975 INFO L793 eck$LassoCheckResult]: Loop: 1837#L542-1 assume !false; 1955#L719 assume test_~splverifierCounter~0 < 4; 1956#L720 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 1971#L728 assume !(0 != test_~tmp~5); 1969#L728-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 1968#L738 assume !(0 != test_~tmp___0~1); 1966#L738-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 1965#L748 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1858#L756-2 assume !(0 != ~pumpRunning~0); 1859#L784 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 1811#L868 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret61, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 1812#L842-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1863#L816-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~10, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~10;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 1851#L652-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~6 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 1852#L657-3 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~10 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 1926#L987-9 assume !(0 != isHighWaterLevel_~tmp~10);isHighWaterLevel_~tmp___0~2 := 1; 1927#L987-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1890#L993-3 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 1753#L820-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1754#L791 havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 1961#L612-5 __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 1959#L542 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 1837#L542-1 [2021-08-27 16:06:18,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:18,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:06:18,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:18,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358836013] [2021-08-27 16:06:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:18,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:19,018 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:19,042 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:19,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:19,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1438352297, now seen corresponding path program 1 times [2021-08-27 16:06:19,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:19,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414627979] [2021-08-27 16:06:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:19,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:06:19,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:19,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414627979] [2021-08-27 16:06:19,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414627979] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:19,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:19,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:06:19,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892195860] [2021-08-27 16:06:19,077 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:19,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:06:19,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:06:19,078 INFO L87 Difference]: Start difference. First operand 236 states and 322 transitions. cyclomatic complexity: 88 Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:19,243 INFO L93 Difference]: Finished difference Result 541 states and 733 transitions. [2021-08-27 16:06:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:06:19,243 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 541 states and 733 transitions. [2021-08-27 16:06:19,245 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 378 [2021-08-27 16:06:19,247 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 541 states to 541 states and 733 transitions. [2021-08-27 16:06:19,247 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 541 [2021-08-27 16:06:19,248 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 541 [2021-08-27 16:06:19,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 541 states and 733 transitions. [2021-08-27 16:06:19,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:19,248 INFO L681 BuchiCegarLoop]: Abstraction has 541 states and 733 transitions. [2021-08-27 16:06:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states and 733 transitions. [2021-08-27 16:06:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 263. [2021-08-27 16:06:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 263 states have (on average 1.326996197718631) internal successors, (349), 262 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 349 transitions. [2021-08-27 16:06:19,252 INFO L704 BuchiCegarLoop]: Abstraction has 263 states and 349 transitions. [2021-08-27 16:06:19,252 INFO L587 BuchiCegarLoop]: Abstraction has 263 states and 349 transitions. [2021-08-27 16:06:19,252 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 16:06:19,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 263 states and 349 transitions. [2021-08-27 16:06:19,253 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 178 [2021-08-27 16:06:19,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:19,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:19,254 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:19,254 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:19,254 INFO L791 eck$LassoCheckResult]: Stem: 2722#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string48.base, #t~string48.offset, 1);call write~init~int(77, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(101, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(116, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(104, #t~string48.base, 4 + #t~string48.offset, 1);call write~init~int(58, #t~string48.base, 5 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 6 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string50.base, #t~string50.offset, 1);call write~init~int(82, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(73, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(84, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 4 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(75, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string54.base, #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 1 + #t~string54.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 2627#L-1 havoc main_#res;havoc main_#t~ret42, main_~retValue_acc~3, main_~tmp~3;havoc main_~retValue_acc~3;havoc main_~tmp~3; 2628#L694 havoc valid_product_#res;havoc valid_product_~retValue_acc~9;havoc valid_product_~retValue_acc~9;valid_product_~retValue_acc~9 := 1;valid_product_#res := valid_product_~retValue_acc~9; 2593#L702 main_#t~ret42 := valid_product_#res;main_~tmp~3 := main_#t~ret42;havoc main_#t~ret42; 2594#L500 assume 0 != main_~tmp~3; 2595#L471 ~methAndRunningLastTime~0 := 0; 2596#L531 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2555#L542-1 [2021-08-27 16:06:19,254 INFO L793 eck$LassoCheckResult]: Loop: 2555#L542-1 assume !false; 2644#L719 assume test_~splverifierCounter~0 < 4; 2606#L720 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 2607#L728 assume !(0 != test_~tmp~5); 2637#L728-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 2638#L738 assume !(0 != test_~tmp___0~1); 2608#L738-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 2609#L748 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2619#L756-2 assume !(0 != ~pumpRunning~0); 2648#L784 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 2602#L868 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret61, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 2603#L842-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 2652#L816-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~10, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~10;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~6;havoc isHighWaterSensorDry_~retValue_acc~6; 2641#L652-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~6 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~6; 2643#L657-3 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~10 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 2733#L987-9 assume 0 != isHighWaterLevel_~tmp~10;isHighWaterLevel_~tmp___0~2 := 0; 2734#L987-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 2789#L993-3 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 2785#L820-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 2581#L791 havoc __utac_acc__Specification2_spec__2_#t~ret43, __utac_acc__Specification2_spec__2_#t~ret44, __utac_acc__Specification2_spec__2_~tmp~4, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~4;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~4;havoc isMethaneLevelCritical_~retValue_acc~4;isMethaneLevelCritical_~retValue_acc~4 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~4; 2527#L612-5 __utac_acc__Specification2_spec__2_#t~ret43 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~4 := __utac_acc__Specification2_spec__2_#t~ret43;havoc __utac_acc__Specification2_spec__2_#t~ret43; 2528#L542 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~4);~methAndRunningLastTime~0 := 0; 2555#L542-1 [2021-08-27 16:06:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:19,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2021-08-27 16:06:19,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:19,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493694550] [2021-08-27 16:06:19,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:19,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:19,274 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:19,292 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:19,293 INFO L82 PathProgramCache]: Analyzing trace with hash 401549267, now seen corresponding path program 1 times [2021-08-27 16:06:19,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:19,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926533321] [2021-08-27 16:06:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:19,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:19,296 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:19,300 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash -465635175, now seen corresponding path program 1 times [2021-08-27 16:06:19,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:19,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275827443] [2021-08-27 16:06:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:19,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:19,315 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:19,338 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:07:04,933 WARN L207 SmtUtils]: Spent 45.34 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:07:50,109 WARN L207 SmtUtils]: Spent 21.91 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:07:50,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:07:50 BoogieIcfgContainer [2021-08-27 16:07:50,236 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:07:50,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:07:50,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:07:50,236 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:07:50,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:06:17" (3/4) ... [2021-08-27 16:07:50,239 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:07:50,296 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:07:50,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:07:50,298 INFO L168 Benchmark]: Toolchain (without parser) took 93701.12 ms. Allocated memory was 48.2 MB in the beginning and 111.1 MB in the end (delta: 62.9 MB). Free memory was 23.3 MB in the beginning and 44.8 MB in the end (delta: -21.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:50,298 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 48.2 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:07:50,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.74 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 35.6 MB in the end (delta: -12.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:50,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.84 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 30.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:50,299 INFO L168 Benchmark]: Boogie Preprocessor took 80.40 ms. Allocated memory is still 58.7 MB. Free memory was 30.0 MB in the beginning and 38.8 MB in the end (delta: -8.8 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:50,300 INFO L168 Benchmark]: RCFGBuilder took 818.07 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.5 MB in the beginning and 48.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:50,300 INFO L168 Benchmark]: BuchiAutomizer took 92292.87 ms. Allocated memory was 71.3 MB in the beginning and 111.1 MB in the end (delta: 39.8 MB). Free memory was 48.3 MB in the beginning and 46.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 74.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:50,300 INFO L168 Benchmark]: Witness Printer took 61.13 ms. Allocated memory is still 111.1 MB. Free memory was 46.9 MB in the beginning and 44.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:50,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 48.2 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 355.74 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 35.6 MB in the end (delta: -12.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.84 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 30.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.40 ms. Allocated memory is still 58.7 MB. Free memory was 30.0 MB in the beginning and 38.8 MB in the end (delta: -8.8 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 818.07 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.5 MB in the beginning and 48.3 MB in the end (delta: -9.8 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 92292.87 ms. Allocated memory was 71.3 MB in the beginning and 111.1 MB in the end (delta: 39.8 MB). Free memory was 48.3 MB in the beginning and 46.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 74.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.13 ms. Allocated memory is still 111.1 MB. Free memory was 46.9 MB in the beginning and 44.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 263 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 92.2s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 91.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 41.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 646 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 263 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1359 SDtfs, 1705 SDslu, 1436 SDs, 0 SdLazy, 274 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 265.6ms Time LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc0 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: 718]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=14435} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2eaaae98=0, NULL=0, NULL=14435, NULL=14438, methaneLevelCritical=0, NULL=15997, tmp=0, NULL=0, NULL=15996, tmp___1=0, NULL=15980, NULL=0, NULL=16000, NULL=15987, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68dc4fa6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c9e27fb=0, NULL=0, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c960fa=0, retValue_acc=1, tmp=1, NULL=15994, NULL=0, NULL=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=15977, tmp___0=0, NULL=15983, methAndRunningLastTime=0, NULL=15986, head=0, NULL=0, NULL=0, NULL=14437, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ae7418=0, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60321b7c=0, tmp=0, retValue_acc=0, NULL=15990, NULL=15993, NULL=15989, tmp___0=0, NULL=0, NULL=15992, NULL=0, NULL=0, NULL=15981, NULL=15976, NULL=15999, NULL=15985, tmp=0, NULL=0, NULL=0, NULL=0, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@731067b5=0, \result=0, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=14436, \result=0, NULL=15998, NULL=15988, NULL=15979, NULL=15978, tmp___0=0, retValue_acc=1, NULL=15982, tmp___2=55, tmp=1, splverifierCounter=0, NULL=0, \result=0, NULL=15984, NULL=15991, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18993410=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f775f5=55, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ad6f6c0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fe21c65=0, tmp=0, NULL=15995, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L525] int methAndRunningLastTime ; [L569] int waterLevel = 1; [L570] int methaneLevelCritical = 0; [L777] int pumpRunning = 0; [L778] int systemActive = 1; [L491] int retValue_acc ; [L492] int tmp ; [L698] int retValue_acc ; [L701] retValue_acc = 1 [L702] return (retValue_acc); [L498] tmp = valid_product() [L500] COND TRUE \read(tmp) [L530] methAndRunningLastTime = 0 [L709] int splverifierCounter ; [L710] int tmp ; [L711] int tmp___0 ; [L712] int tmp___1 ; [L713] int tmp___2 ; [L716] splverifierCounter = 0 Loop: [L718] COND TRUE 1 [L720] COND TRUE splverifierCounter < 4 [L726] tmp = __VERIFIER_nondet_int() [L728] COND FALSE !(\read(tmp)) [L736] tmp___0 = __VERIFIER_nondet_int() [L738] COND FALSE !(\read(tmp___0)) [L746] tmp___2 = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp___2) [L1020] systemActive = 1 [L784] COND FALSE !(\read(pumpRunning)) [L791] COND TRUE \read(systemActive) [L865] int tmp ; [L868] COND FALSE !(\read(pumpRunning)) [L839] int tmp ; [L842] COND FALSE !(\read(pumpRunning)) [L813] int tmp ; [L816] COND TRUE ! pumpRunning [L979] int retValue_acc ; [L980] int tmp ; [L981] int tmp___0 ; [L649] int retValue_acc ; [L652] COND TRUE waterLevel < 2 [L653] retValue_acc = 1 [L654] return (retValue_acc); [L985] tmp = isHighWaterSensorDry() [L987] COND TRUE \read(tmp) [L988] tmp___0 = 0 [L992] retValue_acc = tmp___0 [L993] return (retValue_acc); [L818] tmp = isHighWaterLevel() [L820] COND FALSE !(\read(tmp)) [L535] int tmp ; [L536] int tmp___0 ; [L608] int retValue_acc ; [L611] retValue_acc = methaneLevelCritical [L612] return (retValue_acc); [L540] tmp = isMethaneLevelCritical() [L542] COND FALSE !(\read(tmp)) [L558] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:07:50,343 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...