./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product42.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_spec1_product42.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 40c03acb761953b49167bc0508d57daafd17b745 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 15:56:35,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:56:35,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:56:35,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:56:35,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:56:35,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:56:35,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:56:35,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:56:35,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:56:35,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:56:35,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:56:35,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:56:35,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:56:35,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:56:35,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:56:35,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:56:35,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:56:35,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:56:35,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:56:35,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:56:35,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:56:35,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:56:35,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:56:35,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:56:35,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:56:35,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:56:35,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:56:35,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:56:35,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:56:35,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:56:35,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:56:35,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:56:35,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:56:35,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:56:35,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:56:35,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:56:35,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:56:35,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:56:35,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:56:35,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:56:35,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:56:35,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:56:35,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:56:35,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:56:35,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:56:35,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:56:35,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:56:35,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:56:35,623 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:56:35,623 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:56:35,623 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:56:35,623 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:56:35,624 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:56:35,624 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:56:35,624 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:56:35,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:56:35,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:56:35,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:56:35,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:56:35,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:56:35,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:56:35,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:56:35,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:56:35,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:56:35,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:56:35,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:56:35,629 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:56:35,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:56:35,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:56:35,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:56:35,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:56:35,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:56:35,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:56:35,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:56:35,631 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:56:35,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c03acb761953b49167bc0508d57daafd17b745 [2021-08-27 15:56:35,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:56:35,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:56:35,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:56:35,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:56:35,842 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:56:35,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-08-27 15:56:35,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118028db2/3a40b0a1a8ef4c6682bfd462f9f48692/FLAGa5156d4fd [2021-08-27 15:56:36,302 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:56:36,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-08-27 15:56:36,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118028db2/3a40b0a1a8ef4c6682bfd462f9f48692/FLAGa5156d4fd [2021-08-27 15:56:36,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118028db2/3a40b0a1a8ef4c6682bfd462f9f48692 [2021-08-27 15:56:36,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:56:36,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:56:36,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:56:36,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:56:36,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:56:36,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2980fc09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36, skipping insertion in model container [2021-08-27 15:56:36,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:56:36,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:56:36,572 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_spec1_product42.cil.c[15670,15683] [2021-08-27 15:56:36,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:56:36,592 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:56:36,650 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_spec1_product42.cil.c[15670,15683] [2021-08-27 15:56:36,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:56:36,671 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:56:36,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36 WrapperNode [2021-08-27 15:56:36,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:56:36,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:56:36,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:56:36,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:56:36,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:56:36,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:56:36,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:56:36,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:56:36,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:56:36,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:56:36,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:56:36,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:56:36,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (1/1) ... [2021-08-27 15:56:36,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:56:36,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:56:36,815 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 15:56:36,825 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 15:56:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:56:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:56:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:56:36,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:56:37,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:56:37,498 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-08-27 15:56:37,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:56:37 BoogieIcfgContainer [2021-08-27 15:56:37,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:56:37,500 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:56:37,500 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:56:37,502 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:56:37,502 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:56:37,502 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:56:36" (1/3) ... [2021-08-27 15:56:37,503 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@753ebd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:56:37, skipping insertion in model container [2021-08-27 15:56:37,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:56:37,503 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:56:36" (2/3) ... [2021-08-27 15:56:37,503 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@753ebd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:56:37, skipping insertion in model container [2021-08-27 15:56:37,503 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:56:37,503 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:56:37" (3/3) ... [2021-08-27 15:56:37,504 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2021-08-27 15:56:37,529 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:56:37,529 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:56:37,529 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:56:37,529 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:56:37,530 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:56:37,530 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:56:37,530 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:56:37,530 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:56:37,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 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 15:56:37,552 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-08-27 15:56:37,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:56:37,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:56:37,556 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:56:37,556 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:56:37,556 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:56:37,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 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 15:56:37,560 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-08-27 15:56:37,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:56:37,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:56:37,561 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:56:37,561 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:56:37,564 INFO L791 eck$LassoCheckResult]: Stem: 65#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 49#L-1true havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 16#L822true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 43#L830true main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 51#L917true assume 0 != main_~tmp~8; 40#L894true havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 10#L779-1true [2021-08-27 15:56:37,564 INFO L793 eck$LassoCheckResult]: Loop: 10#L779-1true assume !false; 20#L523true assume test_~splverifierCounter~0 < 4; 33#L524true test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 71#L532true assume !(0 != test_~tmp~3); 42#L532-1true test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 13#L542true assume !(0 != test_~tmp___0~0); 68#L542-1true test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 50#L552true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 39#L560-2true assume !(0 != ~pumpRunning~0); 55#L591true assume !(0 != ~systemActive~0); 57#L598true havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 76#L458-1true __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 15#L779true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 10#L779-1true [2021-08-27 15:56:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:56:37,568 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:56:37,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:56:37,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693667221] [2021-08-27 15:56:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:56:37,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:56:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:37,699 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:56:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:37,779 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:56:37,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:56:37,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1680236925, now seen corresponding path program 1 times [2021-08-27 15:56:37,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:56:37,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781244255] [2021-08-27 15:56:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:56:37,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:56:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:56:37,819 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 15:56:37,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:56:37,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781244255] [2021-08-27 15:56:37,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781244255] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:56:37,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:56:37,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:56:37,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255916507] [2021-08-27 15:56:37,823 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:56:37,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:56:37,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:56:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:56:37,836 INFO L87 Difference]: Start difference. First operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 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 15:56:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:56:37,870 INFO L93 Difference]: Finished difference Result 84 states and 116 transitions. [2021-08-27 15:56:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:56:37,872 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-08-27 15:56:37,880 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-08-27 15:56:37,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 77 states and 108 transitions. [2021-08-27 15:56:37,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-08-27 15:56:37,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2021-08-27 15:56:37,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 108 transitions. [2021-08-27 15:56:37,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:56:37,885 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-08-27 15:56:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 108 transitions. [2021-08-27 15:56:37,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-08-27 15:56:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 76 states have internal predecessors, (108), 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 15:56:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2021-08-27 15:56:37,912 INFO L704 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-08-27 15:56:37,913 INFO L587 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-08-27 15:56:37,913 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:56:37,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 108 transitions. [2021-08-27 15:56:37,916 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-08-27 15:56:37,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:56:37,916 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:56:37,917 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:56:37,917 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:56:37,918 INFO L791 eck$LassoCheckResult]: Stem: 248#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 235#L-1 havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 196#L822 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 197#L830 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 229#L917 assume 0 != main_~tmp~8; 228#L894 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 187#L779-1 [2021-08-27 15:56:37,918 INFO L793 eck$LassoCheckResult]: Loop: 187#L779-1 assume !false; 188#L523 assume test_~splverifierCounter~0 < 4; 203#L524 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 220#L532 assume !(0 != test_~tmp~3); 178#L532-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 191#L542 assume !(0 != test_~tmp___0~0); 192#L542-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 236#L552 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 215#L560-2 assume !(0 != ~pumpRunning~0); 226#L591 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 183#L623 assume !(0 == ~pumpRunning~0); 185#L598 havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 241#L458-1 __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 194#L779 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 187#L779-1 [2021-08-27 15:56:37,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:56:37,919 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:56:37,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:56:37,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981044899] [2021-08-27 15:56:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:56:37,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:56:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:37,974 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:56:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:38,042 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:56:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:56:38,043 INFO L82 PathProgramCache]: Analyzing trace with hash -589506373, now seen corresponding path program 1 times [2021-08-27 15:56:38,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:56:38,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80314670] [2021-08-27 15:56:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:56:38,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:56:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:56:38,064 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 15:56:38,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:56:38,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80314670] [2021-08-27 15:56:38,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80314670] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:56:38,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:56:38,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:56:38,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685060528] [2021-08-27 15:56:38,070 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:56:38,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:56:38,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:56:38,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:56:38,071 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. cyclomatic complexity: 33 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15:56:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:56:38,155 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2021-08-27 15:56:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:56:38,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 159 transitions. [2021-08-27 15:56:38,158 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2021-08-27 15:56:38,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 118 states and 159 transitions. [2021-08-27 15:56:38,158 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 118 [2021-08-27 15:56:38,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 118 [2021-08-27 15:56:38,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 159 transitions. [2021-08-27 15:56:38,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:56:38,159 INFO L681 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2021-08-27 15:56:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 159 transitions. [2021-08-27 15:56:38,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-08-27 15:56:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 118 states have (on average 1.347457627118644) internal successors, (159), 117 states have internal predecessors, (159), 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 15:56:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 159 transitions. [2021-08-27 15:56:38,163 INFO L704 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2021-08-27 15:56:38,163 INFO L587 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2021-08-27 15:56:38,163 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:56:38,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 159 transitions. [2021-08-27 15:56:38,164 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2021-08-27 15:56:38,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:56:38,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:56:38,164 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:56:38,164 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] [2021-08-27 15:56:38,164 INFO L791 eck$LassoCheckResult]: Stem: 451#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(13);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string45.base, #t~string45.offset, 1);call write~init~int(77, #t~string45.base, 1 + #t~string45.offset, 1);call write~init~int(101, #t~string45.base, 2 + #t~string45.offset, 1);call write~init~int(116, #t~string45.base, 3 + #t~string45.offset, 1);call write~init~int(104, #t~string45.base, 4 + #t~string45.offset, 1);call write~init~int(58, #t~string45.base, 5 + #t~string45.offset, 1);call write~init~int(0, #t~string45.base, 6 + #t~string45.offset, 1);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string47.base, #t~string47.offset, 1);call write~init~int(82, #t~string47.base, 1 + #t~string47.offset, 1);call write~init~int(73, #t~string47.base, 2 + #t~string47.offset, 1);call write~init~int(84, #t~string47.base, 3 + #t~string47.offset, 1);call write~init~int(0, #t~string47.base, 4 + #t~string47.offset, 1);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string49.base, #t~string49.offset, 1);call write~init~int(75, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 2 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string51.base, #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 1 + #t~string51.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 438#L-1 havoc main_#res;havoc main_#t~ret79, main_~retValue_acc~11, main_~tmp~8;havoc main_~retValue_acc~11;havoc main_~tmp~8; 397#L822 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 398#L830 main_#t~ret79 := valid_product_#res;main_~tmp~8 := main_#t~ret79;havoc main_#t~ret79; 432#L917 assume 0 != main_~tmp~8; 430#L894 havoc test_#t~nondet52, test_#t~nondet53, test_#t~nondet54, test_#t~nondet55, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 387#L779-1 [2021-08-27 15:56:38,164 INFO L793 eck$LassoCheckResult]: Loop: 387#L779-1 assume !false; 388#L523 assume test_~splverifierCounter~0 < 4; 404#L524 test_~tmp~3 := test_#t~nondet52;havoc test_#t~nondet52; 423#L532 assume !(0 != test_~tmp~3); 379#L532-1 test_~tmp___0~0 := test_#t~nondet53;havoc test_#t~nondet53; 389#L542 assume !(0 != test_~tmp___0~0); 390#L542-1 test_~tmp___2~0 := test_#t~nondet54;havoc test_#t~nondet54; 439#L552 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 416#L560-2 assume !(0 != ~pumpRunning~0); 429#L591 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 384#L623 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 385#L498 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 414#L503 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 457#L743 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 382#L743-2 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 383#L749 processEnvironment_#t~ret56 := isHighWaterLevel_#res;processEnvironment_~tmp~4 := processEnvironment_#t~ret56;havoc processEnvironment_#t~ret56; 386#L627 assume !(0 != processEnvironment_~tmp~4); 421#L598 havoc __utac_acc__Specification1_spec__1_#t~ret76, __utac_acc__Specification1_spec__1_#t~ret77, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 446#L458-1 __utac_acc__Specification1_spec__1_#t~ret76 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret76;havoc __utac_acc__Specification1_spec__1_#t~ret76; 395#L779 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 387#L779-1 [2021-08-27 15:56:38,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:56:38,165 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:56:38,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:56:38,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398670394] [2021-08-27 15:56:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:56:38,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:56:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:38,190 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:56:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:38,213 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:56:38,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:56:38,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1033634393, now seen corresponding path program 1 times [2021-08-27 15:56:38,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:56:38,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616116008] [2021-08-27 15:56:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:56:38,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:56:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:38,217 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:56:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:38,221 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:56:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:56:38,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1018922419, now seen corresponding path program 1 times [2021-08-27 15:56:38,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:56:38,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720425393] [2021-08-27 15:56:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:56:38,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:56:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:38,238 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:56:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:56:38,260 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:57:18,100 WARN L207 SmtUtils]: Spent 39.51 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 15:57:59,093 WARN L207 SmtUtils]: Spent 20.04 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 15:57:59,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:57:59 BoogieIcfgContainer [2021-08-27 15:57:59,194 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:57:59,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:57:59,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:57:59,195 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:57:59,195 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:56:37" (3/4) ... [2021-08-27 15:57:59,197 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:57:59,229 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:57:59,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:57:59,230 INFO L168 Benchmark]: Toolchain (without parser) took 82897.41 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 34.6 MB in the beginning and 31.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:59,231 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 38.6 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:57:59,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.76 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.4 MB in the beginning and 44.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:59,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.31 ms. Allocated memory is still 69.2 MB. Free memory was 44.6 MB in the beginning and 41.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:59,232 INFO L168 Benchmark]: Boogie Preprocessor took 33.65 ms. Allocated memory is still 69.2 MB. Free memory was 41.5 MB in the beginning and 39.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:59,232 INFO L168 Benchmark]: RCFGBuilder took 718.82 ms. Allocated memory is still 69.2 MB. Free memory was 39.4 MB in the beginning and 44.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:59,233 INFO L168 Benchmark]: BuchiAutomizer took 81694.70 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 44.1 MB in the beginning and 34.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 63.0 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:59,233 INFO L168 Benchmark]: Witness Printer took 34.57 ms. Allocated memory is still 100.7 MB. Free memory was 34.9 MB in the beginning and 31.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:57:59,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 38.6 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.76 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.4 MB in the beginning and 44.6 MB in the end (delta: -10.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.31 ms. Allocated memory is still 69.2 MB. Free memory was 44.6 MB in the beginning and 41.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.65 ms. Allocated memory is still 69.2 MB. Free memory was 41.5 MB in the beginning and 39.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 718.82 ms. Allocated memory is still 69.2 MB. Free memory was 39.4 MB in the beginning and 44.3 MB in the end (delta: -4.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81694.70 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 44.1 MB in the beginning and 34.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 63.0 MB. Max. memory is 16.1 GB. * Witness Printer took 34.57 ms. Allocated memory is still 100.7 MB. Free memory was 34.9 MB in the beginning and 31.9 MB in the end (delta: 3.0 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 118 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 81.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 17.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 118 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 219 SDtfs, 203 SDslu, 48 SDs, 0 SdLazy, 24 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.1ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 522]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=24021} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=0, NULL=24021, NULL=0, NULL=0, NULL=24037, NULL=0, NULL=24042, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16703f44=68, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b032973=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2881ee19=0, NULL=24029, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d97df0a=0, NULL=24027, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3f6874e0=0, retValue_acc=1, tmp___0=0, tmp=0, NULL=0, NULL=0, retValue_acc=0, NULL=24049, tmp___1=0, NULL=24025, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@149f7e85=0, tmp___0=0, NULL=0, NULL=0, NULL=24032, NULL=24036, NULL=24031, cleanupTimeShifts=4, NULL=24044, NULL=24045, NULL=24048, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=0, NULL=0, NULL=0, retValue_acc=0, \result=0, NULL=24035, tmp___0=0, NULL=24047, retValue_acc=0, NULL=24034, \result=1, head=0, pumpRunning=0, NULL=24038, \result=0, retValue_acc=1, NULL=24026, tmp=0, NULL=0, NULL=24030, NULL=0, NULL=0, tmp=1, NULL=0, NULL=0, NULL=24022, \result=1, NULL=0, NULL=0, NULL=24046, tmp___2=68, NULL=24024, NULL=24041, tmp=1, splverifierCounter=0, NULL=0, \result=0, NULL=24040, NULL=24043, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18a4e8a3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d09e359=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a37f9ee=0, head=0, tmp=0, NULL=0, NULL=0, NULL=24033, NULL=0, NULL=0, NULL=24028, NULL=24023, NULL=24039} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L583] int pumpRunning = 0; [L584] int systemActive = 1; [L835] int cleanupTimeShifts = 4; [L908] int retValue_acc ; [L909] int tmp ; [L826] int retValue_acc ; [L829] retValue_acc = 1 [L830] return (retValue_acc); [L915] tmp = valid_product() [L917] COND TRUE \read(tmp) [L513] int splverifierCounter ; [L514] int tmp ; [L515] int tmp___0 ; [L516] int tmp___1 ; [L517] int tmp___2 ; [L520] splverifierCounter = 0 Loop: [L522] COND TRUE 1 [L524] COND TRUE splverifierCounter < 4 [L530] tmp = __VERIFIER_nondet_int() [L532] COND FALSE !(\read(tmp)) [L540] tmp___0 = __VERIFIER_nondet_int() [L542] COND FALSE !(\read(tmp___0)) [L550] tmp___2 = __VERIFIER_nondet_int() [L552] COND TRUE \read(tmp___2) [L757] systemActive = 1 [L591] COND FALSE !(\read(pumpRunning)) [L598] COND TRUE \read(systemActive) [L620] int tmp ; [L623] COND TRUE ! pumpRunning [L735] int retValue_acc ; [L736] int tmp ; [L737] int tmp___0 ; [L495] int retValue_acc ; [L498] COND TRUE waterLevel < 2 [L499] retValue_acc = 1 [L500] return (retValue_acc); [L741] tmp = isHighWaterSensorDry() [L743] COND TRUE \read(tmp) [L744] tmp___0 = 0 [L748] retValue_acc = tmp___0 [L749] return (retValue_acc); [L625] tmp = isHighWaterLevel() [L627] COND FALSE !(\read(tmp)) [L772] int tmp ; [L773] int tmp___0 ; [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L777] tmp = isMethaneLevelCritical() [L779] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:57:59,279 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...