./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product63.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_spec5_product63.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 00e497454c8779dfd347e43478e15d5d034f1070 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:27:01,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:27:01,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:27:01,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:27:01,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:27:01,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:27:01,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:27:01,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:27:01,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:27:01,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:27:01,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:27:01,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:27:01,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:27:01,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:27:01,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:27:01,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:27:01,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:27:01,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:27:01,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:27:01,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:27:01,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:27:01,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:27:01,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:27:01,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:27:01,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:27:01,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:27:01,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:27:01,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:27:01,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:27:01,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:27:01,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:27:01,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:27:01,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:27:01,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:27:01,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:27:01,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:27:01,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:27:01,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:27:01,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:27:01,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:27:01,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:27:01,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:27:01,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:27:01,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:27:01,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:27:01,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:27:01,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:27:01,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:27:01,580 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:27:01,580 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:27:01,580 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:27:01,580 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:27:01,581 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:27:01,581 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:27:01,582 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:27:01,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:27:01,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:27:01,582 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:27:01,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:27:01,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:27:01,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:27:01,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:27:01,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:27:01,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:27:01,584 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:27:01,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:27:01,584 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:27:01,584 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:27:01,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:27:01,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:27:01,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:27:01,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:27:01,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:27:01,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:27:01,587 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:27:01,587 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00e497454c8779dfd347e43478e15d5d034f1070 [2021-08-27 16:27:01,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:27:01,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:27:01,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:27:01,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:27:01,932 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:27:01,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c [2021-08-27 16:27:01,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef6742837/eda85136af164f089207880f9f3bca67/FLAG4c5bb153e [2021-08-27 16:27:02,410 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:27:02,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product63.cil.c [2021-08-27 16:27:02,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef6742837/eda85136af164f089207880f9f3bca67/FLAG4c5bb153e [2021-08-27 16:27:02,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef6742837/eda85136af164f089207880f9f3bca67 [2021-08-27 16:27:02,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:27:02,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:27:02,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:27:02,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:27:02,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:27:02,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45eec3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02, skipping insertion in model container [2021-08-27 16:27:02,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:27:02,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:27:02,613 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_spec5_product63.cil.c[2573,2586] [2021-08-27 16:27:02,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:27:02,725 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:27:02,738 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_spec5_product63.cil.c[2573,2586] [2021-08-27 16:27:02,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:27:02,790 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:27:02,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02 WrapperNode [2021-08-27 16:27:02,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:27:02,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:27:02,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:27:02,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:27:02,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:27:02,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:27:02,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:27:02,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:27:02,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:27:02,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:27:02,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:27:02,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:27:02,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (1/1) ... [2021-08-27 16:27:02,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:27:02,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:27:02,995 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 16:27:02,998 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 16:27:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:27:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:27:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:27:03,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:27:03,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:27:03,986 INFO L299 CfgBuilder]: Removed 366 assume(true) statements. [2021-08-27 16:27:03,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:27:03 BoogieIcfgContainer [2021-08-27 16:27:03,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:27:03,989 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:27:03,989 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:27:03,992 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:27:03,992 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:27:03,992 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:27:02" (1/3) ... [2021-08-27 16:27:03,993 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a4673f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:27:03, skipping insertion in model container [2021-08-27 16:27:03,993 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:27:03,993 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:02" (2/3) ... [2021-08-27 16:27:03,994 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a4673f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:27:03, skipping insertion in model container [2021-08-27 16:27:03,994 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:27:03,994 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:27:03" (3/3) ... [2021-08-27 16:27:03,995 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2021-08-27 16:27:04,035 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:27:04,035 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:27:04,035 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:27:04,035 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:27:04,035 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:27:04,035 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:27:04,036 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:27:04,036 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:27:04,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 233 states, 232 states have (on average 1.5) internal successors, (348), 232 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:27:04,079 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2021-08-27 16:27:04,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:27:04,080 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:27:04,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:04,087 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:04,088 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:27:04,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 233 states, 232 states have (on average 1.5) internal successors, (348), 232 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:27:04,098 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 153 [2021-08-27 16:27:04,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:27:04,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:27:04,099 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:04,099 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:04,102 INFO L791 eck$LassoCheckResult]: Stem: 224#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 153#L-1true havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 225#L119true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 227#L127true main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 37#L297true assume 0 != main_~tmp~2; 172#L273true ~switchedOnBeforeTS~0 := 0; 215#L51true havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 179#L72-1true [2021-08-27 16:27:04,103 INFO L793 eck$LassoCheckResult]: Loop: 179#L72-1true assume !false; 8#L157true assume test_~splverifierCounter~0 < 4; 134#L158true test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 87#L166true assume !(0 != test_~tmp~1); 196#L166-1true test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 157#L176true assume !(0 != test_~tmp___0~1); 28#L176-1true test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 58#L186true assume 0 != test_~tmp___2~0; 119#L192-1true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 174#L482true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 64#L61true assume !(0 != ~pumpRunning~0); 212#L328true assume !(0 != ~systemActive~0); 25#L335true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 222#L651true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 59#L72true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 179#L72-1true [2021-08-27 16:27:04,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:04,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:27:04,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:04,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729867789] [2021-08-27 16:27:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:04,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:04,281 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:04,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:04,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:04,455 INFO L82 PathProgramCache]: Analyzing trace with hash -235396459, now seen corresponding path program 1 times [2021-08-27 16:27:04,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:04,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771374361] [2021-08-27 16:27:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:04,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:04,461 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:04,476 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:04,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:04,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1698628751, now seen corresponding path program 1 times [2021-08-27 16:27:04,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:04,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109797454] [2021-08-27 16:27:04,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:04,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:27:04,645 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 16:27:04,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:27:04,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109797454] [2021-08-27 16:27:04,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109797454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:27:04,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:27:04,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:27:04,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153848666] [2021-08-27 16:27:04,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:27:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:27:04,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:27:04,906 INFO L87 Difference]: Start difference. First operand has 233 states, 232 states have (on average 1.5) internal successors, (348), 232 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:27:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:27:05,145 INFO L93 Difference]: Finished difference Result 517 states and 748 transitions. [2021-08-27 16:27:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:27:05,147 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 517 states and 748 transitions. [2021-08-27 16:27:05,156 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 339 [2021-08-27 16:27:05,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 517 states to 496 states and 727 transitions. [2021-08-27 16:27:05,165 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 496 [2021-08-27 16:27:05,167 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 496 [2021-08-27 16:27:05,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 727 transitions. [2021-08-27 16:27:05,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:27:05,170 INFO L681 BuchiCegarLoop]: Abstraction has 496 states and 727 transitions. [2021-08-27 16:27:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 727 transitions. [2021-08-27 16:27:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 275. [2021-08-27 16:27:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 275 states have (on average 1.4581818181818182) internal successors, (401), 274 states have internal predecessors, (401), 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 16:27:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 401 transitions. [2021-08-27 16:27:05,205 INFO L704 BuchiCegarLoop]: Abstraction has 275 states and 401 transitions. [2021-08-27 16:27:05,205 INFO L587 BuchiCegarLoop]: Abstraction has 275 states and 401 transitions. [2021-08-27 16:27:05,205 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:27:05,205 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 275 states and 401 transitions. [2021-08-27 16:27:05,207 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 188 [2021-08-27 16:27:05,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:27:05,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:27:05,208 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:05,208 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:05,208 INFO L791 eck$LassoCheckResult]: Stem: 992#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 966#L-1 havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 967#L119 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 993#L127 main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 826#L297 assume 0 != main_~tmp~2; 827#L273 ~switchedOnBeforeTS~0 := 0; 976#L51 havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 864#L72-1 [2021-08-27 16:27:05,209 INFO L793 eck$LassoCheckResult]: Loop: 864#L72-1 assume !false; 778#L157 assume test_~splverifierCounter~0 < 4; 779#L158 test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 909#L166 assume !(0 != test_~tmp~1); 911#L166-1 test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 969#L176 assume !(0 != test_~tmp___0~1); 813#L176-1 test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 814#L186 assume 0 != test_~tmp___2~0; 861#L192-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 942#L482 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 872#L61 assume !(0 != ~pumpRunning~0); 874#L328 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 855#L412 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret17, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 856#L386-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret16, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 936#L360-3 assume !(0 == ~pumpRunning~0); 797#L335 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 808#L651 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 862#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 864#L72-1 [2021-08-27 16:27:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:05,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:27:05,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:05,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021412963] [2021-08-27 16:27:05,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:05,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:05,240 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:05,291 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:05,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1853866313, now seen corresponding path program 1 times [2021-08-27 16:27:05,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:05,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645232339] [2021-08-27 16:27:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:05,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:27:05,311 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 16:27:05,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:27:05,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645232339] [2021-08-27 16:27:05,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645232339] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:27:05,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:27:05,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:27:05,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593277086] [2021-08-27 16:27:05,312 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:27:05,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:27:05,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:27:05,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:27:05,313 INFO L87 Difference]: Start difference. First operand 275 states and 401 transitions. cyclomatic complexity: 129 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 16:27:05,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:27:05,465 INFO L93 Difference]: Finished difference Result 277 states and 380 transitions. [2021-08-27 16:27:05,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:27:05,466 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 277 states and 380 transitions. [2021-08-27 16:27:05,469 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 194 [2021-08-27 16:27:05,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 277 states to 277 states and 380 transitions. [2021-08-27 16:27:05,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 277 [2021-08-27 16:27:05,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 277 [2021-08-27 16:27:05,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 277 states and 380 transitions. [2021-08-27 16:27:05,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:27:05,479 INFO L681 BuchiCegarLoop]: Abstraction has 277 states and 380 transitions. [2021-08-27 16:27:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states and 380 transitions. [2021-08-27 16:27:05,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-08-27 16:27:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 277 states have (on average 1.371841155234657) internal successors, (380), 276 states have internal predecessors, (380), 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 16:27:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 380 transitions. [2021-08-27 16:27:05,496 INFO L704 BuchiCegarLoop]: Abstraction has 277 states and 380 transitions. [2021-08-27 16:27:05,496 INFO L587 BuchiCegarLoop]: Abstraction has 277 states and 380 transitions. [2021-08-27 16:27:05,496 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:27:05,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 380 transitions. [2021-08-27 16:27:05,497 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 194 [2021-08-27 16:27:05,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:27:05,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:27:05,498 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:05,498 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:05,498 INFO L791 eck$LassoCheckResult]: Stem: 1522#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 1417#L-1 havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 1418#L119 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1523#L127 main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 1403#L297 assume 0 != main_~tmp~2; 1404#L273 ~switchedOnBeforeTS~0 := 0; 1457#L51 havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1515#L72-1 [2021-08-27 16:27:05,499 INFO L793 eck$LassoCheckResult]: Loop: 1515#L72-1 assume !false; 1587#L157 assume test_~splverifierCounter~0 < 4; 1361#L158 test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 1362#L166 assume !(0 != test_~tmp~1); 1492#L166-1 test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 1428#L176 assume !(0 != test_~tmp___0~1); 1367#L176-1 test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 1596#L186 assume 0 != test_~tmp___2~0; 1595#L192-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1594#L482 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 1593#L61 assume !(0 != ~pumpRunning~0); 1547#L328 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1453#L412 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret17, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1419#L386-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret16, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 1420#L360-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 1509#L659-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 1494#L664-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 1352#L531-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 1353#L531-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1503#L537-3 processEnvironment__wrappee__highWaterSensor_#t~ret16 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret16;havoc processEnvironment__wrappee__highWaterSensor_#t~ret16; 1491#L364-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 1375#L335 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 1592#L651 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 1590#L72 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 1515#L72-1 [2021-08-27 16:27:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:27:05,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:05,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573404708] [2021-08-27 16:27:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:05,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:05,564 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:05,636 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:05,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2069526741, now seen corresponding path program 1 times [2021-08-27 16:27:05,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:05,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609254938] [2021-08-27 16:27:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:05,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:27:05,700 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 16:27:05,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:27:05,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609254938] [2021-08-27 16:27:05,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609254938] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:27:05,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:27:05,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:27:05,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77734861] [2021-08-27 16:27:05,702 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:27:05,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:27:05,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:27:05,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:27:05,705 INFO L87 Difference]: Start difference. First operand 277 states and 380 transitions. cyclomatic complexity: 106 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:27:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:27:06,100 INFO L93 Difference]: Finished difference Result 1231 states and 1699 transitions. [2021-08-27 16:27:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:27:06,100 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1231 states and 1699 transitions. [2021-08-27 16:27:06,109 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 851 [2021-08-27 16:27:06,116 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1231 states to 1231 states and 1699 transitions. [2021-08-27 16:27:06,116 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1231 [2021-08-27 16:27:06,117 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1231 [2021-08-27 16:27:06,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1231 states and 1699 transitions. [2021-08-27 16:27:06,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:27:06,118 INFO L681 BuchiCegarLoop]: Abstraction has 1231 states and 1699 transitions. [2021-08-27 16:27:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states and 1699 transitions. [2021-08-27 16:27:06,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 544. [2021-08-27 16:27:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 544 states have (on average 1.3566176470588236) internal successors, (738), 543 states have internal predecessors, (738), 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 16:27:06,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 738 transitions. [2021-08-27 16:27:06,131 INFO L704 BuchiCegarLoop]: Abstraction has 544 states and 738 transitions. [2021-08-27 16:27:06,131 INFO L587 BuchiCegarLoop]: Abstraction has 544 states and 738 transitions. [2021-08-27 16:27:06,131 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:27:06,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 544 states and 738 transitions. [2021-08-27 16:27:06,133 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 386 [2021-08-27 16:27:06,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:27:06,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:27:06,134 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:06,134 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:06,135 INFO L791 eck$LassoCheckResult]: Stem: 3075#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~string22.base, #t~string22.offset := #Ultimate.allocOnStack(13);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string28.base, #t~string28.offset, 1);call write~init~int(80, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(117, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(109, #t~string28.base, 3 + #t~string28.offset, 1);call write~init~int(112, #t~string28.base, 4 + #t~string28.offset, 1);call write~init~int(58, #t~string28.base, 5 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 6 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string34.base, #t~string34.offset, 1);call write~init~int(32, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string36.base, #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 1 + #t~string36.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(13);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string42.base, #t~string42.offset, 1);call write~init~int(77, #t~string42.base, 1 + #t~string42.offset, 1);call write~init~int(101, #t~string42.base, 2 + #t~string42.offset, 1);call write~init~int(116, #t~string42.base, 3 + #t~string42.offset, 1);call write~init~int(104, #t~string42.base, 4 + #t~string42.offset, 1);call write~init~int(58, #t~string42.base, 5 + #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 6 + #t~string42.offset, 1);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string44.base, #t~string44.offset, 1);call write~init~int(82, #t~string44.base, 1 + #t~string44.offset, 1);call write~init~int(73, #t~string44.base, 2 + #t~string44.offset, 1);call write~init~int(84, #t~string44.base, 3 + #t~string44.offset, 1);call write~init~int(0, #t~string44.base, 4 + #t~string44.offset, 1);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string46.base, #t~string46.offset, 1);call write~init~int(75, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 2 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string48.base, #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 1 + #t~string48.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(21);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(30);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(9);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(25);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(30);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(9);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 2950#L-1 havoc main_#res;havoc main_#t~ret15, main_~retValue_acc~2, main_~tmp~2;havoc main_~retValue_acc~2;havoc main_~tmp~2; 2951#L119 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 3076#L127 main_#t~ret15 := valid_product_#res;main_~tmp~2 := main_#t~ret15;havoc main_#t~ret15; 2932#L297 assume 0 != main_~tmp~2; 2933#L273 ~switchedOnBeforeTS~0 := 0; 2989#L51 havoc test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_#t~nondet14, test_~splverifierCounter~0, test_~tmp~1, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~1;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3060#L72-1 [2021-08-27 16:27:06,135 INFO L793 eck$LassoCheckResult]: Loop: 3060#L72-1 assume !false; 3298#L157 assume test_~splverifierCounter~0 < 4; 3299#L158 test_~tmp~1 := test_#t~nondet11;havoc test_#t~nondet11; 3367#L166 assume !(0 != test_~tmp~1); 3364#L166-1 test_~tmp___0~1 := test_#t~nondet12;havoc test_#t~nondet12; 3363#L176 assume !(0 != test_~tmp___0~1); 3361#L176-1 test_~tmp___2~0 := test_#t~nondet13;havoc test_#t~nondet13; 3360#L186 assume 0 != test_~tmp___2~0; 3330#L192-1 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 3329#L482 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 3328#L61 assume !(0 != ~pumpRunning~0); 3306#L328 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret18, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 3305#L412 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret17, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 3286#L386-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret16, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 3304#L360-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret37, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~9;havoc isHighWaterSensorDry_~retValue_acc~9; 3303#L659-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~9 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~9; 3053#L664-3 isHighWaterLevel_#t~ret37 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret37;havoc isHighWaterLevel_#t~ret37; 3302#L531-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 3301#L531-11 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 3046#L537-3 processEnvironment__wrappee__highWaterSensor_#t~ret16 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret16;havoc processEnvironment__wrappee__highWaterSensor_#t~ret16; 3033#L364-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 2909#L335 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~8;havoc getWaterLevel_~retValue_acc~8;getWaterLevel_~retValue_acc~8 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~8; 3347#L651 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 3346#L72 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 3345#L482-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 3344#L76 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 3060#L72-1 [2021-08-27 16:27:06,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:06,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:27:06,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:06,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787398498] [2021-08-27 16:27:06,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:06,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:06,164 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:06,195 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:06,196 INFO L82 PathProgramCache]: Analyzing trace with hash 245333008, now seen corresponding path program 1 times [2021-08-27 16:27:06,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:06,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308692863] [2021-08-27 16:27:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:06,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:06,205 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:06,214 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:06,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1720878634, now seen corresponding path program 1 times [2021-08-27 16:27:06,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:06,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857925817] [2021-08-27 16:27:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:06,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:06,253 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:06,303 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:45,095 WARN L207 SmtUtils]: Spent 38.33 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:28:25,364 WARN L207 SmtUtils]: Spent 19.41 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:28:25,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:28:25 BoogieIcfgContainer [2021-08-27 16:28:25,476 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:28:25,477 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:28:25,477 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:28:25,477 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:28:25,477 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:27:03" (3/4) ... [2021-08-27 16:28:25,479 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:28:25,525 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:28:25,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:28:25,526 INFO L168 Benchmark]: Toolchain (without parser) took 83080.49 ms. Allocated memory was 48.2 MB in the beginning and 151.0 MB in the end (delta: 102.8 MB). Free memory was 22.7 MB in the beginning and 102.2 MB in the end (delta: -79.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:25,527 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 48.2 MB. Free memory is still 30.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:28:25,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.79 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.5 MB in the beginning and 35.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:25,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.79 ms. Allocated memory is still 58.7 MB. Free memory was 35.1 MB in the beginning and 29.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:25,529 INFO L168 Benchmark]: Boogie Preprocessor took 85.76 ms. Allocated memory is still 58.7 MB. Free memory was 29.7 MB in the beginning and 38.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:25,529 INFO L168 Benchmark]: RCFGBuilder took 1019.24 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.1 MB in the beginning and 29.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:25,530 INFO L168 Benchmark]: BuchiAutomizer took 81487.47 ms. Allocated memory was 71.3 MB in the beginning and 151.0 MB in the end (delta: 79.7 MB). Free memory was 29.6 MB in the beginning and 104.3 MB in the end (delta: -74.7 MB). Peak memory consumption was 84.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:25,530 INFO L168 Benchmark]: Witness Printer took 49.01 ms. Allocated memory is still 151.0 MB. Free memory was 104.3 MB in the beginning and 102.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:25,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 48.2 MB. Free memory is still 30.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.79 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.5 MB in the beginning and 35.3 MB in the end (delta: -12.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.79 ms. Allocated memory is still 58.7 MB. Free memory was 35.1 MB in the beginning and 29.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.76 ms. Allocated memory is still 58.7 MB. Free memory was 29.7 MB in the beginning and 38.1 MB in the end (delta: -8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1019.24 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.1 MB in the beginning and 29.6 MB in the end (delta: 8.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81487.47 ms. Allocated memory was 71.3 MB in the beginning and 151.0 MB in the end (delta: 79.7 MB). Free memory was 29.6 MB in the beginning and 104.3 MB in the end (delta: -74.7 MB). Peak memory consumption was 84.1 MB. Max. memory is 16.1 GB. * Witness Printer took 49.01 ms. Allocated memory is still 151.0 MB. Free memory was 104.3 MB in the beginning and 102.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 544 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 80.4s. Construction of modules took 0.4s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 52.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 908 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 544 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1014 SDtfs, 2889 SDslu, 2573 SDs, 0 SdLazy, 277 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 471.5ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 156]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=1, NULL=29090, NULL=29068, NULL=0, NULL=29070, NULL=0, methaneLevelCritical=0, NULL=29071, retValue_acc=0, NULL=0, NULL=29091, NULL=0, tmp___1=0, NULL=0, NULL=29084, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c2df62=0, cleanupTimeShifts=4, tmp=0, NULL=29079, waterLevel=1, NULL=0, NULL=29093, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=0, tmp=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=0, tmp=1, NULL=29095, tmp___0=0, NULL=29074, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2eeff60d=0, NULL=29092, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a503a37=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17821adc=53, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69657098=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@554fccfa=0, head=0, NULL=0, NULL=0, tmp=0, NULL=29085, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d25d1a3=0, NULL=29080, tmp=0, retValue_acc=0, NULL=0, NULL=0, NULL=29072, tmp___0=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27c2fc0a=0, NULL=0, NULL=29094, tmp=1, NULL=0, NULL=29082, tmp=0, NULL=29083, switchedOnBeforeTS=0, \result=0, NULL=0, systemActive=1, NULL=29087, \result=1, NULL=0, \result=0, NULL=29076, tmp___0=0, \result=0, NULL=29089, NULL=29088, NULL=29077, NULL=29069, NULL=29081, retValue_acc=1, tmp___2=53, splverifierCounter=0, NULL=0, NULL=29075, NULL=29078, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32388dd6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bf92ce5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5df2fda9=0, NULL=29073, NULL=0, NULL=0, NULL=29086, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45f12f7e=0, NULL=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int switchedOnBeforeTS ; [L213] int cleanupTimeShifts = 4; [L318] int pumpRunning = 0; [L319] int systemActive = 1; [L576] int waterLevel = 1; [L577] int methaneLevelCritical = 0; [L848] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L288] int retValue_acc ; [L289] int tmp ; [L123] int retValue_acc ; [L126] retValue_acc = 1 [L127] return (retValue_acc); [L295] tmp = valid_product() [L297] COND TRUE \read(tmp) [L50] switchedOnBeforeTS = 0 [L147] int splverifierCounter ; [L148] int tmp ; [L149] int tmp___0 ; [L150] int tmp___1 ; [L151] int tmp___2 ; [L154] splverifierCounter = 0 Loop: [L156] COND TRUE 1 [L158] COND TRUE splverifierCounter < 4 [L164] tmp = __VERIFIER_nondet_int() [L166] COND FALSE !(\read(tmp)) [L174] tmp___0 = __VERIFIER_nondet_int() [L176] COND FALSE !(\read(tmp___0)) [L184] tmp___2 = __VERIFIER_nondet_int() [L186] COND TRUE \read(tmp___2) [L478] int retValue_acc ; [L481] retValue_acc = pumpRunning [L482] return (retValue_acc); [L59] switchedOnBeforeTS = isPumpRunning() [L328] COND FALSE !(\read(pumpRunning)) [L335] COND TRUE \read(systemActive) [L409] int tmp ; [L412] COND FALSE !(\read(pumpRunning)) [L383] int tmp ; [L386] COND FALSE !(\read(pumpRunning)) [L357] int tmp ; [L360] COND TRUE ! pumpRunning [L523] int retValue_acc ; [L524] int tmp ; [L525] int tmp___0 ; [L656] int retValue_acc ; [L659] COND TRUE waterLevel < 2 [L660] retValue_acc = 1 [L661] return (retValue_acc); [L529] tmp = isHighWaterSensorDry() [L531] COND TRUE \read(tmp) [L532] tmp___0 = 0 [L536] retValue_acc = tmp___0 [L537] return (retValue_acc); [L362] tmp = isHighWaterLevel() [L364] COND FALSE !(\read(tmp)) [L65] int tmp ; [L66] int tmp___0 ; [L647] int retValue_acc ; [L650] retValue_acc = waterLevel [L651] return (retValue_acc); [L70] tmp = getWaterLevel() [L72] COND TRUE tmp != 2 [L478] int retValue_acc ; [L481] retValue_acc = pumpRunning [L482] return (retValue_acc); [L74] tmp___0 = isPumpRunning() [L76] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:28:25,588 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...