./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product55.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_product55.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 dbf7149ba5f2c2b45723d578c2ed612c4c7ff3d9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:58:13,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:58:13,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:58:13,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:58:13,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:58:13,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:58:13,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:58:13,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:58:13,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:58:13,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:58:13,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:58:13,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:58:13,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:58:13,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:58:13,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:58:13,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:58:13,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:58:13,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:58:13,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:58:13,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:58:13,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:58:13,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:58:13,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:58:13,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:58:13,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:58:13,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:58:13,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:58:13,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:58:13,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:58:13,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:58:13,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:58:13,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:58:13,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:58:13,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:58:13,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:58:13,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:58:13,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:58:13,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:58:13,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:58:13,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:58:13,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:58:13,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:58:13,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:58:13,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:58:13,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:58:13,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:58:13,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:58:13,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:58:13,550 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:58:13,550 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:58:13,550 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:58:13,550 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:58:13,550 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:58:13,550 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:58:13,551 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:58:13,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:58:13,551 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:58:13,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:58:13,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:58:13,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:58:13,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:58:13,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:58:13,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:58:13,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:58:13,552 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:58:13,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:58:13,552 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:58:13,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:58:13,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:58:13,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:58:13,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:58:13,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:58:13,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:58:13,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:58:13,553 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:58:13,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbf7149ba5f2c2b45723d578c2ed612c4c7ff3d9 [2021-08-27 15:58:13,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:58:13,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:58:13,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:58:13,939 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:58:13,939 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:58:13,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2021-08-27 15:58:14,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4623c160/da1966a37e9e4055b6ed887268ddc15f/FLAG213cc1196 [2021-08-27 15:58:14,414 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:58:14,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2021-08-27 15:58:14,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4623c160/da1966a37e9e4055b6ed887268ddc15f/FLAG213cc1196 [2021-08-27 15:58:14,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4623c160/da1966a37e9e4055b6ed887268ddc15f [2021-08-27 15:58:14,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:58:14,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:58:14,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:14,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:58:14,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:58:14,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e84da8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14, skipping insertion in model container [2021-08-27 15:58:14,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:58:14,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:58:14,653 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_product55.cil.c[7599,7612] [2021-08-27 15:58:14,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:14,741 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:58:14,775 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_product55.cil.c[7599,7612] [2021-08-27 15:58:14,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:58:14,834 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:58:14,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14 WrapperNode [2021-08-27 15:58:14,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:58:14,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:14,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:58:14,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:58:14,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:58:14,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:58:14,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:58:14,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:58:14,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:58:14,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:58:14,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:58:14,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:58:14,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (1/1) ... [2021-08-27 15:58:14,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:58:14,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:58:15,006 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 15:58:15,013 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 15:58:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:58:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:58:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:58:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:58:15,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:58:15,658 INFO L299 CfgBuilder]: Removed 280 assume(true) statements. [2021-08-27 15:58:15,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:15 BoogieIcfgContainer [2021-08-27 15:58:15,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:58:15,660 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:58:15,660 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:58:15,662 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:58:15,662 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:15,663 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:58:14" (1/3) ... [2021-08-27 15:58:15,663 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@243f8ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:15, skipping insertion in model container [2021-08-27 15:58:15,663 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:15,663 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:58:14" (2/3) ... [2021-08-27 15:58:15,664 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@243f8ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:58:15, skipping insertion in model container [2021-08-27 15:58:15,664 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:58:15,664 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:15" (3/3) ... [2021-08-27 15:58:15,665 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2021-08-27 15:58:15,694 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:58:15,695 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:58:15,695 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:58:15,695 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:58:15,695 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:58:15,695 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:58:15,695 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:58:15,695 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:58:15,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 188 states, 187 states have (on average 1.5401069518716577) internal successors, (288), 187 states have internal predecessors, (288), 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 15:58:15,723 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-08-27 15:58:15,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:15,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:15,728 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:15,728 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:15,728 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:58:15,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 188 states, 187 states have (on average 1.5401069518716577) internal successors, (288), 187 states have internal predecessors, (288), 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 15:58:15,734 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-08-27 15:58:15,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:15,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:15,735 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:15,735 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:58:15,738 INFO L791 eck$LassoCheckResult]: Stem: 167#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 60#L-1true havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~10, main_~tmp~6;havoc main_~retValue_acc~10;havoc main_~tmp~6; 166#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 97#L75true main_#t~ret44 := valid_product_#res;main_~tmp~6 := main_#t~ret44;havoc main_#t~ret44; 187#L595true assume 0 != main_~tmp~6; 147#L572true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 180#L617-1true [2021-08-27 15:58:15,739 INFO L793 eck$LassoCheckResult]: Loop: 180#L617-1true assume !false; 154#L96true assume test_~splverifierCounter~0 < 4; 113#L97true test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 28#L105true assume !(0 != test_~tmp~0); 98#L105-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 93#L115true assume !(0 != test_~tmp___0~0); 96#L115-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 129#L125true assume 0 != test_~tmp___2~0; 134#L131-1true assume !(0 != ~pumpRunning~0); 95#L169true assume !(0 != ~systemActive~0); 68#L176true havoc __utac_acc__Specification1_spec__1_#t~ret45, __utac_acc__Specification1_spec__1_#t~ret46, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;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; 10#L444-1true __utac_acc__Specification1_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret45;havoc __utac_acc__Specification1_spec__1_#t~ret45; 102#L617true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 180#L617-1true [2021-08-27 15:58:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:15,742 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 15:58:15,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:15,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527789213] [2021-08-27 15:58:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:15,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:15,869 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:15,940 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:15,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1667892533, now seen corresponding path program 1 times [2021-08-27 15:58:15,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:15,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680511754] [2021-08-27 15:58:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:15,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:15,947 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:15,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:15,952 INFO L82 PathProgramCache]: Analyzing trace with hash 46386405, now seen corresponding path program 1 times [2021-08-27 15:58:15,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:15,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923447176] [2021-08-27 15:58:15,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:15,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:16,042 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 15:58:16,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:16,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923447176] [2021-08-27 15:58:16,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923447176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:16,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:16,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:58:16,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049949523] [2021-08-27 15:58:16,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 15:58:16,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 15:58:16,134 INFO L87 Difference]: Start difference. First operand has 188 states, 187 states have (on average 1.5401069518716577) internal successors, (288), 187 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:58:16,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:16,306 INFO L93 Difference]: Finished difference Result 420 states and 618 transitions. [2021-08-27 15:58:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 15:58:16,308 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 420 states and 618 transitions. [2021-08-27 15:58:16,312 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 273 [2021-08-27 15:58:16,317 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 420 states to 399 states and 597 transitions. [2021-08-27 15:58:16,318 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 399 [2021-08-27 15:58:16,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 399 [2021-08-27 15:58:16,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 399 states and 597 transitions. [2021-08-27 15:58:16,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:16,321 INFO L681 BuchiCegarLoop]: Abstraction has 399 states and 597 transitions. [2021-08-27 15:58:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states and 597 transitions. [2021-08-27 15:58:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 222. [2021-08-27 15:58:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 1.4864864864864864) internal successors, (330), 221 states have internal predecessors, (330), 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 15:58:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2021-08-27 15:58:16,345 INFO L704 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-08-27 15:58:16,345 INFO L587 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-08-27 15:58:16,346 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:58:16,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 330 transitions. [2021-08-27 15:58:16,347 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-08-27 15:58:16,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:16,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:16,348 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:16,348 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 15:58:16,348 INFO L791 eck$LassoCheckResult]: Stem: 803#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 718#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~10, main_~tmp~6;havoc main_~retValue_acc~10;havoc main_~tmp~6; 719#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 758#L75 main_#t~ret44 := valid_product_#res;main_~tmp~6 := main_#t~ret44;havoc main_#t~ret44; 759#L595 assume 0 != main_~tmp~6; 795#L572 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 755#L617-1 [2021-08-27 15:58:16,348 INFO L793 eck$LassoCheckResult]: Loop: 755#L617-1 assume !false; 800#L96 assume test_~splverifierCounter~0 < 4; 775#L97 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 671#L105 assume !(0 != test_~tmp~0); 633#L105-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 751#L115 assume !(0 != test_~tmp___0~0); 752#L115-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 757#L125 assume 0 != test_~tmp___2~0; 728#L131-1 assume !(0 != ~pumpRunning~0); 660#L169 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 756#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 674#L227-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 676#L201-3 assume !(0 == ~pumpRunning~0); 730#L176 havoc __utac_acc__Specification1_spec__1_#t~ret45, __utac_acc__Specification1_spec__1_#t~ret46, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;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; 639#L444-1 __utac_acc__Specification1_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret45;havoc __utac_acc__Specification1_spec__1_#t~ret45; 640#L617 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 755#L617-1 [2021-08-27 15:58:16,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:16,349 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 15:58:16,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:16,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254425265] [2021-08-27 15:58:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:16,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:16,376 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:16,418 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:16,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:16,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2101003018, now seen corresponding path program 1 times [2021-08-27 15:58:16,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:16,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435890810] [2021-08-27 15:58:16,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:16,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:58:16,429 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 15:58:16,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:58:16,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435890810] [2021-08-27 15:58:16,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435890810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:58:16,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:58:16,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:58:16,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773134714] [2021-08-27 15:58:16,431 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:58:16,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:58:16,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:58:16,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:58:16,431 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. cyclomatic complexity: 111 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 15:58:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:58:16,508 INFO L93 Difference]: Finished difference Result 225 states and 310 transitions. [2021-08-27 15:58:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:58:16,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 225 states and 310 transitions. [2021-08-27 15:58:16,510 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2021-08-27 15:58:16,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 225 states to 225 states and 310 transitions. [2021-08-27 15:58:16,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 225 [2021-08-27 15:58:16,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 225 [2021-08-27 15:58:16,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 310 transitions. [2021-08-27 15:58:16,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:58:16,513 INFO L681 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2021-08-27 15:58:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 310 transitions. [2021-08-27 15:58:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-08-27 15:58:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 225 states have (on average 1.3777777777777778) internal successors, (310), 224 states have internal predecessors, (310), 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 15:58:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 310 transitions. [2021-08-27 15:58:16,518 INFO L704 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2021-08-27 15:58:16,518 INFO L587 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2021-08-27 15:58:16,518 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:58:16,519 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states and 310 transitions. [2021-08-27 15:58:16,519 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2021-08-27 15:58:16,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:58:16,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:58:16,520 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:58:16,520 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 15:58:16,520 INFO L791 eck$LassoCheckResult]: Stem: 1227#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~string17.base, #t~string17.offset := #Ultimate.allocOnStack(13);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string19.base, #t~string19.offset, 1);call write~init~int(110, #t~string19.base, 1 + #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 2 + #t~string19.offset, 1);call #t~string21.base, #t~string21.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string21.base, #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 1 + #t~string21.offset, 1);call write~init~int(102, #t~string21.base, 2 + #t~string21.offset, 1);call write~init~int(0, #t~string21.base, 3 + #t~string21.offset, 1);call #t~string23.base, #t~string23.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string23.base, #t~string23.offset, 1);call write~init~int(80, #t~string23.base, 1 + #t~string23.offset, 1);call write~init~int(117, #t~string23.base, 2 + #t~string23.offset, 1);call write~init~int(109, #t~string23.base, 3 + #t~string23.offset, 1);call write~init~int(112, #t~string23.base, 4 + #t~string23.offset, 1);call write~init~int(58, #t~string23.base, 5 + #t~string23.offset, 1);call write~init~int(0, #t~string23.base, 6 + #t~string23.offset, 1);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string25.base, #t~string25.offset, 1);call write~init~int(110, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 2 + #t~string25.offset, 1);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string27.base, #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 1 + #t~string27.offset, 1);call write~init~int(102, #t~string27.base, 2 + #t~string27.offset, 1);call write~init~int(0, #t~string27.base, 3 + #t~string27.offset, 1);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string29.base, #t~string29.offset, 1);call write~init~int(32, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string31.base, #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 1 + #t~string31.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(13);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string37.base, #t~string37.offset, 1);call write~init~int(77, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(101, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(116, #t~string37.base, 3 + #t~string37.offset, 1);call write~init~int(104, #t~string37.base, 4 + #t~string37.offset, 1);call write~init~int(58, #t~string37.base, 5 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 6 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string39.base, #t~string39.offset, 1);call write~init~int(82, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(73, #t~string39.base, 2 + #t~string39.offset, 1);call write~init~int(84, #t~string39.base, 3 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 4 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string41.base, #t~string41.offset, 1);call write~init~int(75, #t~string41.base, 1 + #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 2 + #t~string41.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string43.base, #t~string43.offset, 1);call write~init~int(0, #t~string43.base, 1 + #t~string43.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(30);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(9);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(21);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(30);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(9);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0; 1154#L-1 havoc main_#res;havoc main_#t~ret44, main_~retValue_acc~10, main_~tmp~6;havoc main_~retValue_acc~10;havoc main_~tmp~6; 1155#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1186#L75 main_#t~ret44 := valid_product_#res;main_~tmp~6 := main_#t~ret44;havoc main_#t~ret44; 1187#L595 assume 0 != main_~tmp~6; 1219#L572 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1182#L617-1 [2021-08-27 15:58:16,521 INFO L793 eck$LassoCheckResult]: Loop: 1182#L617-1 assume !false; 1223#L96 assume test_~splverifierCounter~0 < 4; 1202#L97 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 1114#L105 assume !(0 != test_~tmp~0); 1087#L105-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 1178#L115 assume !(0 != test_~tmp___0~0); 1179#L115-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 1185#L125 assume 0 != test_~tmp___2~0; 1162#L131-1 assume !(0 != ~pumpRunning~0); 1183#L169 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret14, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1184#L253 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret13, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 1117#L227-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1118#L201-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret32, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1166#L484-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1115#L489-3 isHighWaterLevel_#t~ret32 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret32;havoc isHighWaterLevel_#t~ret32; 1116#L355-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1205#L355-11 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 1096#L361-3 processEnvironment__wrappee__highWaterSensor_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret12;havoc processEnvironment__wrappee__highWaterSensor_#t~ret12; 1097#L205-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1165#L176 havoc __utac_acc__Specification1_spec__1_#t~ret45, __utac_acc__Specification1_spec__1_#t~ret46, __utac_acc__Specification1_spec__1_~tmp~7, __utac_acc__Specification1_spec__1_~tmp___0~3;havoc __utac_acc__Specification1_spec__1_~tmp~7;havoc __utac_acc__Specification1_spec__1_~tmp___0~3;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; 1090#L444-1 __utac_acc__Specification1_spec__1_#t~ret45 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~7 := __utac_acc__Specification1_spec__1_#t~ret45;havoc __utac_acc__Specification1_spec__1_#t~ret45; 1091#L617 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~7); 1182#L617-1 [2021-08-27 15:58:16,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:16,521 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 15:58:16,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:16,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505938250] [2021-08-27 15:58:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:16,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:16,541 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:16,582 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:16,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:16,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2033396642, now seen corresponding path program 1 times [2021-08-27 15:58:16,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:16,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430634540] [2021-08-27 15:58:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:16,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:16,587 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:16,592 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:58:16,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1008265528, now seen corresponding path program 1 times [2021-08-27 15:58:16,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:58:16,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17675846] [2021-08-27 15:58:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:58:16,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:58:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:16,614 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:58:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:58:16,643 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:58:56,332 WARN L207 SmtUtils]: Spent 39.50 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 15:59:36,952 WARN L207 SmtUtils]: Spent 19.34 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 15:59:37,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:59:37 BoogieIcfgContainer [2021-08-27 15:59:37,089 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:59:37,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:59:37,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:59:37,090 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:59:37,091 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:58:15" (3/4) ... [2021-08-27 15:59:37,092 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:59:37,139 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:59:37,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:59:37,141 INFO L168 Benchmark]: Toolchain (without parser) took 82696.95 ms. Allocated memory was 52.4 MB in the beginning and 172.0 MB in the end (delta: 119.5 MB). Free memory was 29.2 MB in the beginning and 126.2 MB in the end (delta: -97.0 MB). Peak memory consumption was 21.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:37,142 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:59:37,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.69 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 29.0 MB in the beginning and 48.2 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:37,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.13 ms. Allocated memory is still 71.3 MB. Free memory was 48.2 MB in the beginning and 43.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:37,157 INFO L168 Benchmark]: Boogie Preprocessor took 41.47 ms. Allocated memory is still 71.3 MB. Free memory was 43.4 MB in the beginning and 40.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:37,157 INFO L168 Benchmark]: RCFGBuilder took 672.86 ms. Allocated memory is still 71.3 MB. Free memory was 40.0 MB in the beginning and 28.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:37,158 INFO L168 Benchmark]: BuchiAutomizer took 81429.39 ms. Allocated memory was 71.3 MB in the beginning and 172.0 MB in the end (delta: 100.7 MB). Free memory was 28.2 MB in the beginning and 129.2 MB in the end (delta: -101.0 MB). Peak memory consumption was 89.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:37,158 INFO L168 Benchmark]: Witness Printer took 50.63 ms. Allocated memory is still 172.0 MB. Free memory was 129.2 MB in the beginning and 126.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:59:37,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.69 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 29.0 MB in the beginning and 48.2 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.13 ms. Allocated memory is still 71.3 MB. Free memory was 48.2 MB in the beginning and 43.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.47 ms. Allocated memory is still 71.3 MB. Free memory was 43.4 MB in the beginning and 40.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 672.86 ms. Allocated memory is still 71.3 MB. Free memory was 40.0 MB in the beginning and 28.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81429.39 ms. Allocated memory was 71.3 MB in the beginning and 172.0 MB in the end (delta: 100.7 MB). Free memory was 28.2 MB in the beginning and 129.2 MB in the end (delta: -101.0 MB). Peak memory consumption was 89.2 MB. Max. memory is 16.1 GB. * Witness Printer took 50.63 ms. Allocated memory is still 172.0 MB. Free memory was 129.2 MB in the beginning and 126.2 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 6 locations. The remainder module has 225 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 81.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 21.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 177 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 225 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 477 SDtfs, 1478 SDslu, 1067 SDs, 0 SdLazy, 81 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 150.1ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 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: 95]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=13135} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6a3ebe1c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3771cec8=0, NULL=13135, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ed04658=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6dd4868a=0, NULL=0, NULL=13155, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39b7fc80=0, retValue_acc=0, NULL=0, NULL=13153, NULL=0, tmp___1=0, NULL=13141, NULL=13143, NULL=0, NULL=13160, cleanupTimeShifts=4, tmp=0, NULL=13144, NULL=0, NULL=0, waterLevel=1, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=13159, tmp=0, NULL=0, NULL=0, tmp=1, \result=1, NULL=0, NULL=0, tmp=1, NULL=0, NULL=13161, NULL=0, NULL=0, NULL=0, NULL=13151, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@343a3ad7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f88755e=0, tmp=0, head=0, NULL=13145, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@dfbc13b=0, NULL=0, NULL=13150, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@568d7fde=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14e4584f=57, tmp=0, NULL=13139, tmp___0=0, NULL=0, NULL=0, NULL=13138, NULL=13157, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6830e54a=0, NULL=0, tmp=0, NULL=13146, NULL=13136, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, systemActive=1, NULL=13162, retValue_acc=0, \result=0, retValue_acc=0, NULL=13147, \result=0, NULL=13149, NULL=0, NULL=13140, NULL=13158, NULL=0, NULL=13152, NULL=13163, NULL=13156, retValue_acc=1, tmp___2=57, splverifierCounter=0, NULL=0, \result=0, NULL=13142, NULL=13154, NULL=13148, NULL=13137} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L161] int pumpRunning = 0; [L162] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L513] int cleanupTimeShifts = 4; [L804] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L586] int retValue_acc ; [L587] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L593] tmp = valid_product() [L595] COND TRUE \read(tmp) [L86] int splverifierCounter ; [L87] int tmp ; [L88] int tmp___0 ; [L89] int tmp___1 ; [L90] int tmp___2 ; [L93] splverifierCounter = 0 Loop: [L95] COND TRUE 1 [L97] COND TRUE splverifierCounter < 4 [L103] tmp = __VERIFIER_nondet_int() [L105] COND FALSE !(\read(tmp)) [L113] tmp___0 = __VERIFIER_nondet_int() [L115] COND FALSE !(\read(tmp___0)) [L123] tmp___2 = __VERIFIER_nondet_int() [L125] COND TRUE \read(tmp___2) [L169] COND FALSE !(\read(pumpRunning)) [L176] COND TRUE \read(systemActive) [L250] int tmp ; [L253] COND FALSE !(\read(pumpRunning)) [L224] int tmp ; [L227] COND FALSE !(\read(pumpRunning)) [L198] int tmp ; [L201] COND TRUE ! pumpRunning [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L481] int retValue_acc ; [L484] COND TRUE waterLevel < 2 [L485] retValue_acc = 1 [L486] return (retValue_acc); [L353] tmp = isHighWaterSensorDry() [L355] COND TRUE \read(tmp) [L356] tmp___0 = 0 [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); [L203] tmp = isHighWaterLevel() [L205] COND FALSE !(\read(tmp)) [L610] int tmp ; [L611] int tmp___0 ; [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); [L615] tmp = isMethaneLevelCritical() [L617] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:59:37,229 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...