./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product57.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 3ad9c9f0403f0ff15bc0d5f7c809182c1025bcda ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:12:26,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:12:26,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:12:26,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:12:26,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:12:26,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:12:26,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:12:26,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:12:26,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:12:26,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:12:26,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:12:26,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:12:26,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:12:26,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:12:26,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:12:26,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:12:26,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:12:26,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:12:26,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:12:26,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:12:26,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:12:26,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:12:26,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:12:26,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:12:26,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:12:26,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:12:26,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:12:26,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:12:26,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:12:26,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:12:26,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:12:26,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:12:26,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:12:26,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:12:26,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:12:26,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:12:26,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:12:26,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:12:26,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:12:26,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:12:26,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:12:26,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:12:26,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:12:26,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:12:26,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:12:26,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:12:26,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:12:26,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:12:26,624 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:12:26,624 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:12:26,624 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:12:26,625 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:12:26,625 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:12:26,626 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:12:26,626 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:12:26,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:12:26,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:12:26,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:12:26,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:12:26,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:12:26,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:12:26,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:12:26,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:12:26,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:12:26,627 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:12:26,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:12:26,628 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:12:26,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:12:26,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:12:26,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:12:26,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:12:26,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:12:26,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:12:26,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:12:26,630 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:12:26,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ad9c9f0403f0ff15bc0d5f7c809182c1025bcda [2021-08-27 16:12:26,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:12:26,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:12:26,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:12:26,952 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:12:26,953 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:12:26,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c [2021-08-27 16:12:27,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0834987/246284a567d84b308a444708ec317c7a/FLAGca8aa73c9 [2021-08-27 16:12:27,557 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:12:27,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c [2021-08-27 16:12:27,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0834987/246284a567d84b308a444708ec317c7a/FLAGca8aa73c9 [2021-08-27 16:12:28,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0834987/246284a567d84b308a444708ec317c7a [2021-08-27 16:12:28,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:12:28,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:12:28,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:12:28,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:12:28,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:12:28,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3221c07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28, skipping insertion in model container [2021-08-27 16:12:28,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:12:28,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:12:28,353 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c[13665,13678] [2021-08-27 16:12:28,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:12:28,380 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:12:28,419 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product57.cil.c[13665,13678] [2021-08-27 16:12:28,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:12:28,447 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:12:28,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28 WrapperNode [2021-08-27 16:12:28,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:12:28,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:12:28,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:12:28,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:12:28,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:12:28,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:12:28,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:12:28,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:12:28,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:12:28,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:12:28,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:12:28,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:12:28,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (1/1) ... [2021-08-27 16:12:28,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:12:28,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:12:28,627 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 16:12:28,654 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 16:12:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:12:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:12:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:12:28,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:12:29,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:12:29,464 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2021-08-27 16:12:29,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:12:29 BoogieIcfgContainer [2021-08-27 16:12:29,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:12:29,468 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:12:29,468 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:12:29,470 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:12:29,471 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:12:29,471 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:12:28" (1/3) ... [2021-08-27 16:12:29,471 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d1aed28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:12:29, skipping insertion in model container [2021-08-27 16:12:29,472 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:12:29,472 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:28" (2/3) ... [2021-08-27 16:12:29,472 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d1aed28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:12:29, skipping insertion in model container [2021-08-27 16:12:29,472 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:12:29,472 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:12:29" (3/3) ... [2021-08-27 16:12:29,473 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product57.cil.c [2021-08-27 16:12:29,523 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:12:29,523 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:12:29,523 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:12:29,523 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:12:29,523 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:12:29,524 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:12:29,524 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:12:29,524 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:12:29,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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 16:12:29,577 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:12:29,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:29,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:29,584 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:29,584 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:29,585 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:12:29,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 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 16:12:29,589 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:12:29,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:29,589 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:29,590 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:29,590 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:29,595 INFO L791 eck$LassoCheckResult]: Stem: 126#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~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 50#L-1true havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 112#L544true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 52#L552true main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 23#L969true assume 0 != main_~tmp~10; 134#L946true havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 137#L574-1true [2021-08-27 16:12:29,601 INFO L793 eck$LassoCheckResult]: Loop: 137#L574-1true assume !false; 58#L833true assume test_~splverifierCounter~0 < 4; 121#L834true test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 66#L842true assume !(0 != test_~tmp~9); 78#L842-1true test_~tmp___0~3 := test_#t~nondet79;havoc test_#t~nondet79; 20#L852true assume !(0 != test_~tmp___0~3); 114#L852-1true test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 91#L862true assume 0 != test_~tmp___2~0; 33#L868-2true assume !(0 != ~pumpRunning~0); 48#L613true assume !(0 != ~systemActive~0); 72#L620true havoc __utac_acc__Specification3_spec__1_#t~ret53, __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 29#L459-2true __utac_acc__Specification3_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret53;havoc __utac_acc__Specification3_spec__1_#t~ret53; 139#L568true assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 137#L574-1true [2021-08-27 16:12:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:29,607 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:12:29,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:29,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932916704] [2021-08-27 16:12:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:29,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:29,847 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:29,974 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:29,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:29,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1679097931, now seen corresponding path program 1 times [2021-08-27 16:12:29,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:29,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150472535] [2021-08-27 16:12:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:29,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:29,994 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:30,009 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:30,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:30,013 INFO L82 PathProgramCache]: Analyzing trace with hash 35181007, now seen corresponding path program 1 times [2021-08-27 16:12:30,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:30,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862778400] [2021-08-27 16:12:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:30,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:12:30,150 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 16:12:30,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:12:30,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862778400] [2021-08-27 16:12:30,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862778400] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:12:30,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:12:30,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:12:30,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133734338] [2021-08-27 16:12:30,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:12:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:12:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:12:30,279 INFO L87 Difference]: Start difference. First operand has 138 states, 137 states have (on average 1.510948905109489) internal successors, (207), 137 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:30,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:12:30,451 INFO L93 Difference]: Finished difference Result 138 states and 196 transitions. [2021-08-27 16:12:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:12:30,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 196 transitions. [2021-08-27 16:12:30,455 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:12:30,459 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 131 states and 189 transitions. [2021-08-27 16:12:30,460 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 131 [2021-08-27 16:12:30,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 131 [2021-08-27 16:12:30,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 189 transitions. [2021-08-27 16:12:30,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:12:30,462 INFO L681 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-08-27 16:12:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states and 189 transitions. [2021-08-27 16:12:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-08-27 16:12:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 130 states have internal predecessors, (189), 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 16:12:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 189 transitions. [2021-08-27 16:12:30,489 INFO L704 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-08-27 16:12:30,489 INFO L587 BuchiCegarLoop]: Abstraction has 131 states and 189 transitions. [2021-08-27 16:12:30,489 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:12:30,489 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states and 189 transitions. [2021-08-27 16:12:30,491 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-08-27 16:12:30,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:30,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:30,492 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:30,492 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:30,492 INFO L791 eck$LassoCheckResult]: Stem: 424#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~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 373#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 374#L544 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 377#L552 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 328#L969 assume 0 != main_~tmp~10; 329#L946 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 388#L574-1 [2021-08-27 16:12:30,493 INFO L793 eck$LassoCheckResult]: Loop: 388#L574-1 assume !false; 385#L833 assume test_~splverifierCounter~0 < 4; 386#L834 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 395#L842 assume !(0 != test_~tmp~9); 333#L842-1 test_~tmp___0~3 := test_#t~nondet79;havoc test_#t~nondet79; 324#L852 assume !(0 != test_~tmp___0~3); 325#L852-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 411#L862 assume 0 != test_~tmp___2~0; 346#L868-2 assume !(0 != ~pumpRunning~0); 335#L613 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 371#L671 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 422#L645-1 assume !(0 == ~pumpRunning~0); 321#L620 havoc __utac_acc__Specification3_spec__1_#t~ret53, __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 339#L459-2 __utac_acc__Specification3_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret53;havoc __utac_acc__Specification3_spec__1_#t~ret53; 340#L568 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 388#L574-1 [2021-08-27 16:12:30,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:30,493 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:12:30,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:30,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250021158] [2021-08-27 16:12:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:30,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:30,534 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:30,602 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:30,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1986081058, now seen corresponding path program 1 times [2021-08-27 16:12:30,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:30,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125787236] [2021-08-27 16:12:30,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:30,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:12:30,625 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 16:12:30,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:12:30,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125787236] [2021-08-27 16:12:30,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125787236] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:12:30,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:12:30,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:12:30,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632122128] [2021-08-27 16:12:30,633 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:12:30,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:12:30,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:12:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:12:30,635 INFO L87 Difference]: Start difference. First operand 131 states and 189 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:12:30,723 INFO L93 Difference]: Finished difference Result 178 states and 246 transitions. [2021-08-27 16:12:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:12:30,729 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 246 transitions. [2021-08-27 16:12:30,732 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-08-27 16:12:30,734 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 178 states and 246 transitions. [2021-08-27 16:12:30,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-08-27 16:12:30,734 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 178 [2021-08-27 16:12:30,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 246 transitions. [2021-08-27 16:12:30,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:12:30,736 INFO L681 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-08-27 16:12:30,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 246 transitions. [2021-08-27 16:12:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-08-27 16:12:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 178 states have (on average 1.3820224719101124) internal successors, (246), 177 states have internal predecessors, (246), 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 16:12:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 246 transitions. [2021-08-27 16:12:30,744 INFO L704 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-08-27 16:12:30,744 INFO L587 BuchiCegarLoop]: Abstraction has 178 states and 246 transitions. [2021-08-27 16:12:30,744 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:12:30,744 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 178 states and 246 transitions. [2021-08-27 16:12:30,745 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-08-27 16:12:30,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:30,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:30,746 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:30,746 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:30,746 INFO L791 eck$LassoCheckResult]: Stem: 747#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~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 691#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 692#L544 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 695#L552 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 646#L969 assume 0 != main_~tmp~10; 647#L946 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 706#L574-1 [2021-08-27 16:12:30,747 INFO L793 eck$LassoCheckResult]: Loop: 706#L574-1 assume !false; 703#L833 assume test_~splverifierCounter~0 < 4; 704#L834 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 786#L842 assume !(0 != test_~tmp~9); 784#L842-1 test_~tmp___0~3 := test_#t~nondet79;havoc test_#t~nondet79; 783#L852 assume !(0 != test_~tmp___0~3); 781#L852-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 780#L862 assume 0 != test_~tmp___2~0; 660#L868-2 assume !(0 != ~pumpRunning~0); 661#L613 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 689#L671 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 744#L645-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 697#L499-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 698#L504-1 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 740#L791-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 745#L791-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 736#L797-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 727#L649-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 637#L620 havoc __utac_acc__Specification3_spec__1_#t~ret53, __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 657#L459-2 __utac_acc__Specification3_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret53;havoc __utac_acc__Specification3_spec__1_#t~ret53; 658#L568 assume 0 != __utac_acc__Specification3_spec__1_~tmp~3; 706#L574-1 [2021-08-27 16:12:30,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:30,747 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:12:30,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:30,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506030304] [2021-08-27 16:12:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:30,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:30,772 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:30,816 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:30,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:30,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1392929194, now seen corresponding path program 1 times [2021-08-27 16:12:30,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:30,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544064810] [2021-08-27 16:12:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:30,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:30,824 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:30,833 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:30,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1849000388, now seen corresponding path program 1 times [2021-08-27 16:12:30,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:30,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809667796] [2021-08-27 16:12:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:30,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:12:30,920 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 16:12:30,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:12:30,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809667796] [2021-08-27 16:12:30,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809667796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:12:30,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:12:30,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:12:30,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618296608] [2021-08-27 16:12:31,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:12:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:12:31,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:12:31,132 INFO L87 Difference]: Start difference. First operand 178 states and 246 transitions. cyclomatic complexity: 70 Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:12:31,278 INFO L93 Difference]: Finished difference Result 621 states and 863 transitions. [2021-08-27 16:12:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:12:31,278 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 621 states and 863 transitions. [2021-08-27 16:12:31,285 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 452 [2021-08-27 16:12:31,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 621 states to 621 states and 863 transitions. [2021-08-27 16:12:31,290 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 621 [2021-08-27 16:12:31,291 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 621 [2021-08-27 16:12:31,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 621 states and 863 transitions. [2021-08-27 16:12:31,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:12:31,305 INFO L681 BuchiCegarLoop]: Abstraction has 621 states and 863 transitions. [2021-08-27 16:12:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states and 863 transitions. [2021-08-27 16:12:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 350. [2021-08-27 16:12:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 350 states have (on average 1.3657142857142857) internal successors, (478), 349 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 478 transitions. [2021-08-27 16:12:31,319 INFO L704 BuchiCegarLoop]: Abstraction has 350 states and 478 transitions. [2021-08-27 16:12:31,319 INFO L587 BuchiCegarLoop]: Abstraction has 350 states and 478 transitions. [2021-08-27 16:12:31,320 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:12:31,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 350 states and 478 transitions. [2021-08-27 16:12:31,322 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 244 [2021-08-27 16:12:31,322 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:31,322 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:31,322 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:31,322 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:31,323 INFO L791 eck$LassoCheckResult]: Stem: 1590#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~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(13);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(110, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(102, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 3 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string67.base, #t~string67.offset, 1);call write~init~int(80, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(117, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(109, #t~string67.base, 3 + #t~string67.offset, 1);call write~init~int(112, #t~string67.base, 4 + #t~string67.offset, 1);call write~init~int(58, #t~string67.base, 5 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 6 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(110, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 2 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(102, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string73.base, #t~string73.offset, 1);call write~init~int(32, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 1509#L-1 havoc main_#res;havoc main_#t~ret82, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1510#L544 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 1513#L552 main_#t~ret82 := valid_product_#res;main_~tmp~10 := main_#t~ret82;havoc main_#t~ret82; 1461#L969 assume 0 != main_~tmp~10; 1462#L946 havoc test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1528#L574-1 [2021-08-27 16:12:31,323 INFO L793 eck$LassoCheckResult]: Loop: 1528#L574-1 assume !false; 1524#L833 assume test_~splverifierCounter~0 < 4; 1525#L834 test_~tmp~9 := test_#t~nondet78;havoc test_#t~nondet78; 1775#L842 assume !(0 != test_~tmp~9); 1773#L842-1 test_~tmp___0~3 := test_#t~nondet79;havoc test_#t~nondet79; 1772#L852 assume !(0 != test_~tmp___0~3); 1771#L852-1 test_~tmp___2~0 := test_#t~nondet80;havoc test_#t~nondet80; 1770#L862 assume 0 != test_~tmp___2~0; 1477#L868-2 assume !(0 != ~pumpRunning~0); 1478#L613 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret57, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1507#L671 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret56, processEnvironment__wrappee__highWaterSensor_~tmp~4;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4; 1586#L645-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret76, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 1740#L499-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 1575#L504-1 isHighWaterLevel_#t~ret76 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret76;havoc isHighWaterLevel_#t~ret76; 1576#L791-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1584#L791-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1569#L797-1 processEnvironment__wrappee__highWaterSensor_#t~ret56 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~4 := processEnvironment__wrappee__highWaterSensor_#t~ret56;havoc processEnvironment__wrappee__highWaterSensor_#t~ret56; 1556#L649-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4); 1454#L620 havoc __utac_acc__Specification3_spec__1_#t~ret53, __utac_acc__Specification3_spec__1_#t~ret54, __utac_acc__Specification3_spec__1_#t~ret55, __utac_acc__Specification3_spec__1_~tmp~3, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~3;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 1546#L459-2 __utac_acc__Specification3_spec__1_#t~ret53 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~3 := __utac_acc__Specification3_spec__1_#t~ret53;havoc __utac_acc__Specification3_spec__1_#t~ret53; 1594#L568 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~3);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~4;havoc getWaterLevel_~retValue_acc~4;getWaterLevel_~retValue_acc~4 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~4; 1595#L491 __utac_acc__Specification3_spec__1_#t~ret54 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret54;havoc __utac_acc__Specification3_spec__1_#t~ret54; 1533#L574 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 1528#L574-1 [2021-08-27 16:12:31,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:31,323 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:12:31,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:31,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042904010] [2021-08-27 16:12:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:31,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:31,354 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:31,379 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:31,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1424832324, now seen corresponding path program 1 times [2021-08-27 16:12:31,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:31,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428015242] [2021-08-27 16:12:31,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:31,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:31,385 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:31,389 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:31,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1227079082, now seen corresponding path program 1 times [2021-08-27 16:12:31,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:31,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059078548] [2021-08-27 16:12:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:31,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:31,410 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:31,458 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:10,261 WARN L207 SmtUtils]: Spent 38.51 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:13:51,587 WARN L207 SmtUtils]: Spent 19.95 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:13:51,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:13:51 BoogieIcfgContainer [2021-08-27 16:13:51,686 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:13:51,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:13:51,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:13:51,688 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:13:51,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:12:29" (3/4) ... [2021-08-27 16:13:51,690 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:13:51,741 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:13:51,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:13:51,743 INFO L168 Benchmark]: Toolchain (without parser) took 83708.92 ms. Allocated memory was 54.5 MB in the beginning and 144.7 MB in the end (delta: 90.2 MB). Free memory was 30.7 MB in the beginning and 90.1 MB in the end (delta: -59.4 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:51,743 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:13:51,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.89 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 30.5 MB in the beginning and 51.5 MB in the end (delta: -21.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:51,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.48 ms. Allocated memory is still 75.5 MB. Free memory was 51.5 MB in the beginning and 47.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:51,746 INFO L168 Benchmark]: Boogie Preprocessor took 76.61 ms. Allocated memory is still 75.5 MB. Free memory was 47.5 MB in the beginning and 44.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:51,747 INFO L168 Benchmark]: RCFGBuilder took 861.31 ms. Allocated memory is still 75.5 MB. Free memory was 44.6 MB in the beginning and 34.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:51,747 INFO L168 Benchmark]: BuchiAutomizer took 82218.24 ms. Allocated memory was 75.5 MB in the beginning and 144.7 MB in the end (delta: 69.2 MB). Free memory was 34.2 MB in the beginning and 93.2 MB in the end (delta: -59.1 MB). Peak memory consumption was 77.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:51,747 INFO L168 Benchmark]: Witness Printer took 55.84 ms. Allocated memory is still 144.7 MB. Free memory was 93.2 MB in the beginning and 90.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:51,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.89 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 30.5 MB in the beginning and 51.5 MB in the end (delta: -21.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.48 ms. Allocated memory is still 75.5 MB. Free memory was 51.5 MB in the beginning and 47.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.61 ms. Allocated memory is still 75.5 MB. Free memory was 47.5 MB in the beginning and 44.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 861.31 ms. Allocated memory is still 75.5 MB. Free memory was 44.6 MB in the beginning and 34.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 82218.24 ms. Allocated memory was 75.5 MB in the beginning and 144.7 MB in the end (delta: 69.2 MB). Free memory was 34.2 MB in the beginning and 93.2 MB in the end (delta: -59.1 MB). Peak memory consumption was 77.5 MB. Max. memory is 16.1 GB. * Witness Printer took 55.84 ms. Allocated memory is still 144.7 MB. Free memory was 93.2 MB in the beginning and 90.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 350 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 82.1s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 81.5s. Construction of modules took 0.2s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 37.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 271 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 350 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 629 SDtfs, 1474 SDslu, 936 SDs, 0 SdLazy, 143 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 238.2ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 832]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=11630} State at position 1 is {NULL=0, NULL=0, NULL=11630, NULL=38233, NULL=0, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7740aa24=0, NULL=0, tmp___1=0, tmp=0, NULL=38239, NULL=0, NULL=11633, NULL=38228, cleanupTimeShifts=4, NULL=11636, tmp=0, tmp=1, NULL=0, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f4ddeea=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=11631, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74a04594=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4468d8cc=0, NULL=38230, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@355560ab=0, tmp=1, tmp___0=0, NULL=0, retValue_acc=1, NULL=38240, NULL=38227, NULL=38232, head=0, NULL=0, NULL=0, tmp=0, NULL=38237, NULL=0, NULL=0, NULL=11632, NULL=0, NULL=0, NULL=38226, NULL=38229, NULL=0, NULL=11634, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34f697e4=0, tmp___0=0, NULL=0, NULL=0, NULL=0, tmp___0=1, NULL=38234, tmp=0, NULL=11638, NULL=38241, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23f6666=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21013573=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=38235, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@52da1725=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43568583=53, retValue_acc=0, \result=0, NULL=38238, NULL=38243, retValue_acc=0, NULL=38244, \result=0, NULL=0, NULL=11635, NULL=38231, retValue_acc=1, NULL=11637, tmp___2=53, splverifierCounter=0, NULL=0, \result=0, NULL=38242, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42238df8=0, NULL=38236, NULL=11639} - 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; [L416] int waterLevel = 1; [L417] int methaneLevelCritical = 0; [L606] int pumpRunning = 0; [L607] int systemActive = 1; [L887] int cleanupTimeShifts = 4; [L960] int retValue_acc ; [L961] int tmp ; [L548] int retValue_acc ; [L551] retValue_acc = 1 [L552] return (retValue_acc); [L967] tmp = valid_product() [L969] COND TRUE \read(tmp) [L823] int splverifierCounter ; [L824] int tmp ; [L825] int tmp___0 ; [L826] int tmp___1 ; [L827] int tmp___2 ; [L830] splverifierCounter = 0 Loop: [L832] COND TRUE 1 [L834] COND TRUE splverifierCounter < 4 [L840] tmp = __VERIFIER_nondet_int() [L842] COND FALSE !(\read(tmp)) [L850] tmp___0 = __VERIFIER_nondet_int() [L852] COND FALSE !(\read(tmp___0)) [L860] tmp___2 = __VERIFIER_nondet_int() [L862] COND TRUE \read(tmp___2) [L613] COND FALSE !(\read(pumpRunning)) [L620] COND TRUE \read(systemActive) [L668] int tmp ; [L671] COND FALSE !(\read(pumpRunning)) [L642] int tmp ; [L645] COND TRUE ! pumpRunning [L783] int retValue_acc ; [L784] int tmp ; [L785] int tmp___0 ; [L496] int retValue_acc ; [L499] COND TRUE waterLevel < 2 [L500] retValue_acc = 1 [L501] return (retValue_acc); [L789] tmp = isHighWaterSensorDry() [L791] COND TRUE \read(tmp) [L792] tmp___0 = 0 [L796] retValue_acc = tmp___0 [L797] return (retValue_acc); [L647] tmp = isHighWaterLevel() [L649] COND FALSE !(\read(tmp)) [L560] int tmp ; [L561] int tmp___0 ; [L562] int tmp___1 ; [L455] int retValue_acc ; [L458] retValue_acc = methaneLevelCritical [L459] return (retValue_acc); [L566] tmp = isMethaneLevelCritical() [L568] COND FALSE !(\read(tmp)) [L487] int retValue_acc ; [L490] retValue_acc = waterLevel [L491] return (retValue_acc); [L572] tmp___0 = getWaterLevel() [L574] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:13:51,813 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...