./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product56.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 df93fd989d6774382f7bc06f2f37e13403a51d4e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:12:20,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:12:20,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:12:20,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:12:20,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:12:20,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:12:20,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:12:20,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:12:20,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:12:20,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:12:20,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:12:20,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:12:20,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:12:20,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:12:20,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:12:20,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:12:20,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:12:20,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:12:20,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:12:20,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:12:20,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:12:20,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:12:20,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:12:20,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:12:20,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:12:20,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:12:20,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:12:20,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:12:20,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:12:20,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:12:20,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:12:20,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:12:20,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:12:20,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:12:20,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:12:20,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:12:20,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:12:20,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:12:20,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:12:20,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:12:20,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:12:20,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:12:20,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:12:20,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:12:20,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:12:20,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:12:20,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:12:20,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:12:20,302 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:12:20,302 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:12:20,302 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:12:20,303 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:12:20,303 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:12:20,303 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:12:20,303 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:12:20,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:12:20,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:12:20,304 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:12:20,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:12:20,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:12:20,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:12:20,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:12:20,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:12:20,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:12:20,311 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:12:20,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:12:20,311 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:12:20,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:12:20,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:12:20,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:12:20,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:12:20,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:12:20,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:12:20,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:12:20,317 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:12:20,317 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df93fd989d6774382f7bc06f2f37e13403a51d4e [2021-08-27 16:12:20,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:12:20,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:12:20,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:12:20,594 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:12:20,594 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:12:20,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2021-08-27 16:12:20,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9092e924c/54afd18399a14f3cb316e9f1022427b8/FLAG040f77ada [2021-08-27 16:12:21,030 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:12:21,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c [2021-08-27 16:12:21,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9092e924c/54afd18399a14f3cb316e9f1022427b8/FLAG040f77ada [2021-08-27 16:12:21,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9092e924c/54afd18399a14f3cb316e9f1022427b8 [2021-08-27 16:12:21,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:12:21,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:12:21,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:12:21,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:12:21,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:12:21,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5b3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21, skipping insertion in model container [2021-08-27 16:12:21,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:12:21,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:12:21,760 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c[18951,18964] [2021-08-27 16:12:21,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:12:21,771 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:12:21,830 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product56.cil.c[18951,18964] [2021-08-27 16:12:21,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:12:21,844 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:12:21,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21 WrapperNode [2021-08-27 16:12:21,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:12:21,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:12:21,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:12:21,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:12:21,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:12:21,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:12:21,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:12:21,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:12:21,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:12:21,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:12:21,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:12:21,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:12:21,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (1/1) ... [2021-08-27 16:12:21,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:12:21,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:12:21,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:12:21,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:12:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:12:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:12:22,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:12:22,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:12:22,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:12:22,783 INFO L299 CfgBuilder]: Removed 288 assume(true) statements. [2021-08-27 16:12:22,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:12:22 BoogieIcfgContainer [2021-08-27 16:12:22,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:12:22,785 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:12:22,785 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:12:22,787 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:12:22,787 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:12:22,788 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:12:21" (1/3) ... [2021-08-27 16:12:22,789 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3abf219a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:12:22, skipping insertion in model container [2021-08-27 16:12:22,789 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:12:22,789 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:12:21" (2/3) ... [2021-08-27 16:12:22,790 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3abf219a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:12:22, skipping insertion in model container [2021-08-27 16:12:22,790 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:12:22,790 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:12:22" (3/3) ... [2021-08-27 16:12:22,790 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product56.cil.c [2021-08-27 16:12:22,814 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:12:22,815 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:12:22,815 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:12:22,815 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:12:22,815 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:12:22,815 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:12:22,815 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:12:22,815 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:12:22,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 194 states, 193 states have (on average 1.538860103626943) internal successors, (297), 193 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:22,857 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-08-27 16:12:22,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:22,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:22,862 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:22,862 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:22,862 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:12:22,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 194 states, 193 states have (on average 1.538860103626943) internal successors, (297), 193 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:22,866 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-08-27 16:12:22,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:22,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:22,867 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:22,867 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:22,870 INFO L791 eck$LassoCheckResult]: Stem: 185#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 138#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 70#L534true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 115#L542true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 191#L132true assume 0 != main_~tmp~0; 123#L105true havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 152#L566-1true [2021-08-27 16:12:22,870 INFO L793 eck$LassoCheckResult]: Loop: 152#L566-1true assume !false; 195#L953true assume test_~splverifierCounter~0 < 4; 193#L954true test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 22#L962true assume !(0 != test_~tmp~10); 117#L962-1true test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 13#L972true assume !(0 != test_~tmp___0~3); 96#L972-1true test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 113#L982true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 155#L990-1true assume !(0 != ~pumpRunning~0); 11#L703true assume !(0 != ~systemActive~0); 53#L710true havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 20#L632-1true __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 19#L560true assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 152#L566-1true [2021-08-27 16:12:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:22,874 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:12:22,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:22,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863062480] [2021-08-27 16:12:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:22,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:23,047 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:23,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:23,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:23,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1666938241, now seen corresponding path program 1 times [2021-08-27 16:12:23,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:23,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803275652] [2021-08-27 16:12:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:23,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:12:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:12:23,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:12:23,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803275652] [2021-08-27 16:12:23,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803275652] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:12:23,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:12:23,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:12:23,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845614899] [2021-08-27 16:12:23,189 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:12:23,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:12:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:12:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:12:23,202 INFO L87 Difference]: Start difference. First operand has 194 states, 193 states have (on average 1.538860103626943) internal successors, (297), 193 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:23,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:12:23,239 INFO L93 Difference]: Finished difference Result 382 states and 570 transitions. [2021-08-27 16:12:23,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:12:23,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 382 states and 570 transitions. [2021-08-27 16:12:23,246 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 250 [2021-08-27 16:12:23,254 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 382 states to 368 states and 555 transitions. [2021-08-27 16:12:23,256 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 368 [2021-08-27 16:12:23,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 368 [2021-08-27 16:12:23,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 368 states and 555 transitions. [2021-08-27 16:12:23,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:12:23,261 INFO L681 BuchiCegarLoop]: Abstraction has 368 states and 555 transitions. [2021-08-27 16:12:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states and 555 transitions. [2021-08-27 16:12:23,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 366. [2021-08-27 16:12:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 366 states have (on average 1.5081967213114753) internal successors, (552), 365 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 552 transitions. [2021-08-27 16:12:23,295 INFO L704 BuchiCegarLoop]: Abstraction has 366 states and 552 transitions. [2021-08-27 16:12:23,295 INFO L587 BuchiCegarLoop]: Abstraction has 366 states and 552 transitions. [2021-08-27 16:12:23,295 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:12:23,296 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 366 states and 552 transitions. [2021-08-27 16:12:23,303 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 248 [2021-08-27 16:12:23,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:23,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:23,303 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:23,304 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:23,304 INFO L791 eck$LassoCheckResult]: Stem: 785#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 678#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 679#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 600#L542 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 601#L132 assume 0 != main_~tmp~0; 636#L105 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 637#L566-1 [2021-08-27 16:12:23,304 INFO L793 eck$LassoCheckResult]: Loop: 637#L566-1 assume !false; 884#L953 assume test_~splverifierCounter~0 < 4; 885#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 926#L962 assume !(0 != test_~tmp~10); 924#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 923#L972 assume !(0 != test_~tmp___0~3); 921#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 920#L982 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 594#L990-1 assume !(0 != ~pumpRunning~0); 917#L703 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 914#L787 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret58, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 911#L761-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret57, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 902#L735-3 assume !(0 == ~pumpRunning~0); 892#L710 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 891#L632-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 887#L560 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 637#L566-1 [2021-08-27 16:12:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:12:23,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:23,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381530897] [2021-08-27 16:12:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:23,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:23,332 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:23,367 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:23,371 INFO L82 PathProgramCache]: Analyzing trace with hash 558894441, now seen corresponding path program 1 times [2021-08-27 16:12:23,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:23,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003184701] [2021-08-27 16:12:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:23,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:12:23,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:12:23,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:12:23,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003184701] [2021-08-27 16:12:23,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003184701] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:12:23,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:12:23,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:12:23,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830177226] [2021-08-27 16:12:23,396 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:12:23,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:12:23,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:12:23,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:12:23,398 INFO L87 Difference]: Start difference. First operand 366 states and 552 transitions. cyclomatic complexity: 189 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:23,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:12:23,495 INFO L93 Difference]: Finished difference Result 389 states and 550 transitions. [2021-08-27 16:12:23,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:12:23,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 389 states and 550 transitions. [2021-08-27 16:12:23,498 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 271 [2021-08-27 16:12:23,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 389 states to 389 states and 550 transitions. [2021-08-27 16:12:23,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 389 [2021-08-27 16:12:23,501 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 389 [2021-08-27 16:12:23,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 389 states and 550 transitions. [2021-08-27 16:12:23,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:12:23,503 INFO L681 BuchiCegarLoop]: Abstraction has 389 states and 550 transitions. [2021-08-27 16:12:23,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states and 550 transitions. [2021-08-27 16:12:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-08-27 16:12:23,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 389 states have (on average 1.4138817480719794) internal successors, (550), 388 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 550 transitions. [2021-08-27 16:12:23,521 INFO L704 BuchiCegarLoop]: Abstraction has 389 states and 550 transitions. [2021-08-27 16:12:23,522 INFO L587 BuchiCegarLoop]: Abstraction has 389 states and 550 transitions. [2021-08-27 16:12:23,522 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:12:23,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 389 states and 550 transitions. [2021-08-27 16:12:23,523 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 271 [2021-08-27 16:12:23,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:23,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:23,525 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:23,525 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:12:23,526 INFO L791 eck$LassoCheckResult]: Stem: 1518#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1426#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1427#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1358#L542 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1359#L132 assume 0 != main_~tmp~0; 1385#L105 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1386#L566-1 [2021-08-27 16:12:23,526 INFO L793 eck$LassoCheckResult]: Loop: 1386#L566-1 assume !false; 1462#L953 assume test_~splverifierCounter~0 < 4; 1694#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 1395#L962 assume !(0 != test_~tmp~10); 1362#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 1363#L972 assume !(0 != test_~tmp___0~3); 1374#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 1353#L982 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1354#L990-1 assume !(0 != ~pumpRunning~0); 1370#L703 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 1371#L787 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret58, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 1515#L761-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret57, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 1516#L735-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1597#L672-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1596#L677-3 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 1595#L889-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 1593#L889-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 1591#L895-3 processEnvironment__wrappee__highWaterSensor_#t~ret57 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret57;havoc processEnvironment__wrappee__highWaterSensor_#t~ret57; 1573#L739-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 1410#L710 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1393#L632-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 1391#L560 assume 0 != __utac_acc__Specification3_spec__1_~tmp~4; 1386#L566-1 [2021-08-27 16:12:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:23,528 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:12:23,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:23,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717317219] [2021-08-27 16:12:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:23,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:23,562 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:23,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:23,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:23,616 INFO L82 PathProgramCache]: Analyzing trace with hash 222495861, now seen corresponding path program 1 times [2021-08-27 16:12:23,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:23,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006111391] [2021-08-27 16:12:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:23,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:23,622 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:23,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:23,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:23,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1475800987, now seen corresponding path program 1 times [2021-08-27 16:12:23,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:23,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573987640] [2021-08-27 16:12:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:23,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:12:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:12:23,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:12:23,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573987640] [2021-08-27 16:12:23,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573987640] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:12:23,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:12:23,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:12:23,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544325715] [2021-08-27 16:12:23,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:12:23,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:12:23,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:12:23,915 INFO L87 Difference]: Start difference. First operand 389 states and 550 transitions. cyclomatic complexity: 164 Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:12:24,018 INFO L93 Difference]: Finished difference Result 1302 states and 1843 transitions. [2021-08-27 16:12:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:12:24,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1302 states and 1843 transitions. [2021-08-27 16:12:24,025 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 962 [2021-08-27 16:12:24,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1302 states to 1302 states and 1843 transitions. [2021-08-27 16:12:24,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1302 [2021-08-27 16:12:24,030 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1302 [2021-08-27 16:12:24,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1302 states and 1843 transitions. [2021-08-27 16:12:24,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:12:24,032 INFO L681 BuchiCegarLoop]: Abstraction has 1302 states and 1843 transitions. [2021-08-27 16:12:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states and 1843 transitions. [2021-08-27 16:12:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 772. [2021-08-27 16:12:24,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 772 states have (on average 1.3963730569948187) internal successors, (1078), 771 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:12:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1078 transitions. [2021-08-27 16:12:24,051 INFO L704 BuchiCegarLoop]: Abstraction has 772 states and 1078 transitions. [2021-08-27 16:12:24,051 INFO L587 BuchiCegarLoop]: Abstraction has 772 states and 1078 transitions. [2021-08-27 16:12:24,051 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:12:24,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 772 states and 1078 transitions. [2021-08-27 16:12:24,054 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 542 [2021-08-27 16:12:24,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:12:24,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:12:24,055 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:12:24,055 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 16:12:24,055 INFO L791 eck$LassoCheckResult]: Stem: 3242#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(13);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string50.base, #t~string50.offset, 1);call write~init~int(77, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(101, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(116, #t~string50.base, 3 + #t~string50.offset, 1);call write~init~int(104, #t~string50.base, 4 + #t~string50.offset, 1);call write~init~int(58, #t~string50.base, 5 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 6 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string52.base, #t~string52.offset, 1);call write~init~int(82, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(73, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(84, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 4 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(75, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string56.base, #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 1 + #t~string56.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(13);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string68.base, #t~string68.offset, 1);call write~init~int(80, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(117, #t~string68.base, 2 + #t~string68.offset, 1);call write~init~int(109, #t~string68.base, 3 + #t~string68.offset, 1);call write~init~int(112, #t~string68.base, 4 + #t~string68.offset, 1);call write~init~int(58, #t~string68.base, 5 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 6 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(110, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 2 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(102, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 3 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string74.base, #t~string74.offset, 1);call write~init~int(32, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 3134#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 3135#L534 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 3067#L542 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 3068#L132 assume 0 != main_~tmp~0; 3093#L105 havoc test_#t~nondet79, test_#t~nondet80, test_#t~nondet81, test_#t~nondet82, test_~splverifierCounter~0, test_~tmp~10, test_~tmp___0~3, test_~tmp___1~1, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~10;havoc test_~tmp___0~3;havoc test_~tmp___1~1;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 3094#L566-1 [2021-08-27 16:12:24,056 INFO L793 eck$LassoCheckResult]: Loop: 3094#L566-1 assume !false; 3430#L953 assume test_~splverifierCounter~0 < 4; 3431#L954 test_~tmp~10 := test_#t~nondet79;havoc test_#t~nondet79; 3576#L962 assume !(0 != test_~tmp~10); 3574#L962-1 test_~tmp___0~3 := test_#t~nondet80;havoc test_#t~nondet80; 3573#L972 assume !(0 != test_~tmp___0~3); 3572#L972-1 test_~tmp___2~0 := test_#t~nondet81;havoc test_#t~nondet81; 3571#L982 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 3568#L990-1 assume !(0 != ~pumpRunning~0); 3546#L703 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret59, processEnvironment_~tmp~7;havoc processEnvironment_~tmp~7; 3567#L787 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret58, processEnvironment__wrappee__lowWaterSensor_~tmp~6;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~6; 3505#L761-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret57, processEnvironment__wrappee__highWaterSensor_~tmp~5;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5; 3566#L735-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret77, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~8, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~8;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 3565#L672-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 3564#L677-3 isHighWaterLevel_#t~ret77 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~8 := isHighWaterLevel_#t~ret77;havoc isHighWaterLevel_#t~ret77; 3563#L889-9 assume 0 != isHighWaterLevel_~tmp~8;isHighWaterLevel_~tmp___0~1 := 0; 3562#L889-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 3558#L895-3 processEnvironment__wrappee__highWaterSensor_#t~ret57 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~5 := processEnvironment__wrappee__highWaterSensor_#t~ret57;havoc processEnvironment__wrappee__highWaterSensor_#t~ret57; 3481#L739-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5); 3448#L710 havoc __utac_acc__Specification3_spec__1_#t~ret44, __utac_acc__Specification3_spec__1_#t~ret45, __utac_acc__Specification3_spec__1_#t~ret46, __utac_acc__Specification3_spec__1_~tmp~4, __utac_acc__Specification3_spec__1_~tmp___0~0, __utac_acc__Specification3_spec__1_~tmp___1~0;havoc __utac_acc__Specification3_spec__1_~tmp~4;havoc __utac_acc__Specification3_spec__1_~tmp___0~0;havoc __utac_acc__Specification3_spec__1_~tmp___1~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 3449#L632-1 __utac_acc__Specification3_spec__1_#t~ret44 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~4 := __utac_acc__Specification3_spec__1_#t~ret44;havoc __utac_acc__Specification3_spec__1_#t~ret44; 3444#L560 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~4);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 3445#L664 __utac_acc__Specification3_spec__1_#t~ret45 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~0 := __utac_acc__Specification3_spec__1_#t~ret45;havoc __utac_acc__Specification3_spec__1_#t~ret45; 3438#L566 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0); 3094#L566-1 [2021-08-27 16:12:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:24,057 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 4 times [2021-08-27 16:12:24,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:24,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262873524] [2021-08-27 16:12:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:24,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:24,101 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:24,121 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash -929830745, now seen corresponding path program 1 times [2021-08-27 16:12:24,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:24,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637748188] [2021-08-27 16:12:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:24,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:24,126 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:24,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:12:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:12:24,130 INFO L82 PathProgramCache]: Analyzing trace with hash 905552461, now seen corresponding path program 1 times [2021-08-27 16:12:24,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:12:24,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825264182] [2021-08-27 16:12:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:12:24,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:12:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:24,147 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:12:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:12:24,178 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:13:05,207 WARN L207 SmtUtils]: Spent 40.79 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:13:46,403 WARN L207 SmtUtils]: Spent 19.95 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:13:46,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:13:46 BoogieIcfgContainer [2021-08-27 16:13:46,554 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:13:46,555 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:13:46,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:13:46,555 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:13:46,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:12:22" (3/4) ... [2021-08-27 16:13:46,557 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:13:46,584 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:13:46,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:13:46,585 INFO L168 Benchmark]: Toolchain (without parser) took 85156.67 ms. Allocated memory was 71.3 MB in the beginning and 125.8 MB in the end (delta: 54.5 MB). Free memory was 55.1 MB in the beginning and 63.7 MB in the end (delta: -8.6 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:46,585 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 71.3 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:13:46,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.58 ms. Allocated memory is still 71.3 MB. Free memory was 54.9 MB in the beginning and 46.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:46,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.59 ms. Allocated memory is still 71.3 MB. Free memory was 46.6 MB in the beginning and 41.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:46,586 INFO L168 Benchmark]: Boogie Preprocessor took 45.95 ms. Allocated memory is still 71.3 MB. Free memory was 41.9 MB in the beginning and 38.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:46,587 INFO L168 Benchmark]: RCFGBuilder took 826.85 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 38.3 MB in the beginning and 47.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:46,587 INFO L168 Benchmark]: BuchiAutomizer took 83769.38 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 47.7 MB in the beginning and 66.9 MB in the end (delta: -19.1 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:46,587 INFO L168 Benchmark]: Witness Printer took 29.84 ms. Allocated memory is still 125.8 MB. Free memory was 65.8 MB in the beginning and 63.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:13:46,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 71.3 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.58 ms. Allocated memory is still 71.3 MB. Free memory was 54.9 MB in the beginning and 46.7 MB in the end (delta: 8.2 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.59 ms. Allocated memory is still 71.3 MB. Free memory was 46.6 MB in the beginning and 41.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.95 ms. Allocated memory is still 71.3 MB. Free memory was 41.9 MB in the beginning and 38.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 826.85 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 38.3 MB in the beginning and 47.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 83769.38 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 47.7 MB in the beginning and 66.9 MB in the end (delta: -19.1 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.1 GB. * Witness Printer took 29.84 ms. Allocated memory is still 125.8 MB. Free memory was 65.8 MB in the beginning and 63.7 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 5 locations. The remainder module has 772 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 83.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 83.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 64.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 532 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 772 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 834 SDtfs, 1341 SDslu, 1392 SDs, 0 SdLazy, 122 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.4ms 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: 952]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=8630} State at position 1 is {NULL=0, NULL=0, NULL=8630, NULL=8655, methaneLevelCritical=0, NULL=0, NULL=8656, tmp___1=0, NULL=8631, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21868d9a=0, NULL=0, NULL=8643, NULL=8638, cleanupTimeShifts=4, tmp=0, NULL=0, waterLevel=1, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, NULL=8635, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c98eefb=0, \result=1, NULL=0, retValue_acc=0, NULL=0, NULL=0, tmp___0=0, tmp=1, retValue_acc=1, NULL=8650, NULL=8636, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31491295=0, NULL=8652, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3213299=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@71b4634a=0, head=0, NULL=0, NULL=0, NULL=8642, tmp=0, NULL=0, NULL=0, NULL=0, NULL=8633, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@239af41f=0, NULL=0, retValue_acc=0, NULL=0, NULL=8640, NULL=8637, NULL=8634, NULL=8644, tmp___0=0, NULL=0, tmp=0, NULL=0, tmp___0=1, NULL=8658, NULL=8646, NULL=8654, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5bae7a3e=0, NULL=0, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@724bb986=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76e0adb2=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45de9132=0, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=8641, \result=0, NULL=8651, NULL=8653, NULL=8647, retValue_acc=1, NULL=8649, NULL=8639, tmp=0, tmp___2=64, splverifierCounter=0, NULL=0, \result=0, NULL=8632, NULL=8657, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64046dcb=0, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63768a1=0, NULL=8648, NULL=8645, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L589] int waterLevel = 1; [L590] int methaneLevelCritical = 0; [L696] int pumpRunning = 0; [L697] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L943] int splverifierCounter ; [L944] int tmp ; [L945] int tmp___0 ; [L946] int tmp___1 ; [L947] int tmp___2 ; [L950] splverifierCounter = 0 Loop: [L952] COND TRUE 1 [L954] COND TRUE splverifierCounter < 4 [L960] tmp = __VERIFIER_nondet_int() [L962] COND FALSE !(\read(tmp)) [L970] tmp___0 = __VERIFIER_nondet_int() [L972] COND FALSE !(\read(tmp___0)) [L980] tmp___2 = __VERIFIER_nondet_int() [L982] COND TRUE \read(tmp___2) [L937] systemActive = 1 [L703] COND FALSE !(\read(pumpRunning)) [L710] COND TRUE \read(systemActive) [L784] int tmp ; [L787] COND FALSE !(\read(pumpRunning)) [L758] int tmp ; [L761] COND FALSE !(\read(pumpRunning)) [L732] int tmp ; [L735] COND TRUE ! pumpRunning [L881] int retValue_acc ; [L882] int tmp ; [L883] int tmp___0 ; [L669] int retValue_acc ; [L672] COND TRUE waterLevel < 2 [L673] retValue_acc = 1 [L674] return (retValue_acc); [L887] tmp = isHighWaterSensorDry() [L889] COND TRUE \read(tmp) [L890] tmp___0 = 0 [L894] retValue_acc = tmp___0 [L895] return (retValue_acc); [L737] tmp = isHighWaterLevel() [L739] COND FALSE !(\read(tmp)) [L552] int tmp ; [L553] int tmp___0 ; [L554] int tmp___1 ; [L628] int retValue_acc ; [L631] retValue_acc = methaneLevelCritical [L632] return (retValue_acc); [L558] tmp = isMethaneLevelCritical() [L560] COND FALSE !(\read(tmp)) [L660] int retValue_acc ; [L663] retValue_acc = waterLevel [L664] return (retValue_acc); [L564] tmp___0 = getWaterLevel() [L566] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:13:46,640 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...