./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product34.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_spec2_product34.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 2eef58443d1776324fbe6fef82cb6eff424772d8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:03:16,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:03:16,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:03:16,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:03:16,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:03:16,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:03:16,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:03:16,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:03:16,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:03:16,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:03:16,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:03:16,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:03:16,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:03:16,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:03:16,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:03:16,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:03:16,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:03:16,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:03:16,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:03:16,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:03:16,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:03:16,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:03:16,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:03:16,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:03:16,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:03:16,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:03:16,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:03:16,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:03:16,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:03:16,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:03:16,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:03:16,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:03:16,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:03:16,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:03:16,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:03:16,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:03:16,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:03:16,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:03:16,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:03:16,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:03:16,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:03:16,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:03:16,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:03:16,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:03:16,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:03:16,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:03:16,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:03:16,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:03:16,329 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:03:16,329 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:03:16,329 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:03:16,330 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:03:16,330 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:03:16,330 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:03:16,330 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:03:16,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:03:16,331 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:03:16,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:03:16,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:03:16,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:03:16,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:03:16,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:03:16,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:03:16,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:03:16,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:03:16,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:03:16,332 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:03:16,332 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:03:16,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:03:16,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:03:16,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:03:16,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:03:16,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:03:16,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:03:16,334 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:03:16,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef58443d1776324fbe6fef82cb6eff424772d8 [2021-08-27 16:03:16,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:03:16,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:03:16,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:03:16,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:03:16,624 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:03:16,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c [2021-08-27 16:03:16,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93a2aa189/2d0aa6e2ac1b45c7bf01d60d80f58057/FLAGa6a969c94 [2021-08-27 16:03:17,014 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:03:17,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product34.cil.c [2021-08-27 16:03:17,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93a2aa189/2d0aa6e2ac1b45c7bf01d60d80f58057/FLAGa6a969c94 [2021-08-27 16:03:17,391 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93a2aa189/2d0aa6e2ac1b45c7bf01d60d80f58057 [2021-08-27 16:03:17,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:03:17,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:03:17,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:03:17,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:03:17,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:03:17,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767ce99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17, skipping insertion in model container [2021-08-27 16:03:17,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:03:17,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:03:17,556 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_spec2_product34.cil.c[4065,4078] [2021-08-27 16:03:17,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:03:17,649 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:03:17,666 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_spec2_product34.cil.c[4065,4078] [2021-08-27 16:03:17,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:03:17,735 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:03:17,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17 WrapperNode [2021-08-27 16:03:17,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:03:17,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:03:17,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:03:17,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:03:17,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:03:17,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:03:17,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:03:17,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:03:17,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:03:17,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:03:17,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:03:17,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:03:17,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (1/1) ... [2021-08-27 16:03:17,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:03:17,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:03:17,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:03:17,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:03:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:03:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:03:17,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:03:17,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:03:18,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:03:18,503 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-08-27 16:03:18,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:03:18 BoogieIcfgContainer [2021-08-27 16:03:18,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:03:18,512 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:03:18,512 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:03:18,514 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:03:18,514 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:03:18,514 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:03:17" (1/3) ... [2021-08-27 16:03:18,515 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@544cf531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:03:18, skipping insertion in model container [2021-08-27 16:03:18,515 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:03:18,515 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:17" (2/3) ... [2021-08-27 16:03:18,515 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@544cf531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:03:18, skipping insertion in model container [2021-08-27 16:03:18,515 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:03:18,515 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:03:18" (3/3) ... [2021-08-27 16:03:18,516 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product34.cil.c [2021-08-27 16:03:18,546 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:03:18,547 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:03:18,547 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:03:18,547 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:03:18,547 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:03:18,547 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:03:18,547 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:03:18,547 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:03:18,559 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 79 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:03:18,571 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-08-27 16:03:18,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:18,571 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:18,576 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:18,576 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:18,576 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:03:18,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 79 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:03:18,588 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-08-27 16:03:18,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:18,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:18,588 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:18,589 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:18,592 INFO L791 eck$LassoCheckResult]: Stem: 54#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(30);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(9);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(21);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 41#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 63#L318true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 32#L326true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 56#L134true assume 0 != main_~tmp~0; 23#L105true ~methAndRunningLastTime~0 := 0; 67#L263true havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 16#L274-1true [2021-08-27 16:03:18,592 INFO L793 eck$LassoCheckResult]: Loop: 16#L274-1true assume !false; 46#L709true assume test_~splverifierCounter~0 < 4; 4#L710true test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 29#L718true assume !(0 != test_~tmp~5); 72#L718-1true test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 74#L728true assume !(0 != test_~tmp___0~1); 51#L728-1true test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 61#L738true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 21#L746-2true assume !(0 != ~pumpRunning~0); 25#L774true assume !(0 != ~systemActive~0); 34#L781true havoc __utac_acc__Specification2_spec__2_#t~ret18, __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 75#L196true __utac_acc__Specification2_spec__2_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret18;havoc __utac_acc__Specification2_spec__2_#t~ret18; 26#L274true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 16#L274-1true [2021-08-27 16:03:18,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:18,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:03:18,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:18,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973257607] [2021-08-27 16:03:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:18,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:18,757 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:18,843 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash 3707467, now seen corresponding path program 1 times [2021-08-27 16:03:18,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:18,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557039196] [2021-08-27 16:03:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:18,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:03:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:03:18,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:03:18,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557039196] [2021-08-27 16:03:18,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557039196] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:03:18,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:03:18,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:03:18,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000073340] [2021-08-27 16:03:18,884 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:03:18,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:03:18,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:03:18,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:03:18,897 INFO L87 Difference]: Start difference. First operand has 79 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:03:18,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:03:18,929 INFO L93 Difference]: Finished difference Result 79 states and 111 transitions. [2021-08-27 16:03:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:03:18,932 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 111 transitions. [2021-08-27 16:03:18,937 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:03:18,946 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 72 states and 103 transitions. [2021-08-27 16:03:18,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2021-08-27 16:03:18,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2021-08-27 16:03:18,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 103 transitions. [2021-08-27 16:03:18,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:03:18,948 INFO L681 BuchiCegarLoop]: Abstraction has 72 states and 103 transitions. [2021-08-27 16:03:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 103 transitions. [2021-08-27 16:03:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-08-27 16:03:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 71 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:03:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 103 transitions. [2021-08-27 16:03:18,974 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 103 transitions. [2021-08-27 16:03:18,974 INFO L587 BuchiCegarLoop]: Abstraction has 72 states and 103 transitions. [2021-08-27 16:03:18,974 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:03:18,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states and 103 transitions. [2021-08-27 16:03:18,977 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:03:18,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:18,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:18,978 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:18,978 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:18,978 INFO L791 eck$LassoCheckResult]: Stem: 230#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(30);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(9);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(21);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 220#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 221#L318 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 212#L326 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 213#L134 assume 0 != main_~tmp~0; 200#L105 ~methAndRunningLastTime~0 := 0; 201#L263 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 193#L274-1 [2021-08-27 16:03:18,979 INFO L793 eck$LassoCheckResult]: Loop: 193#L274-1 assume !false; 194#L709 assume test_~splverifierCounter~0 < 4; 167#L710 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 168#L718 assume !(0 != test_~tmp~5); 210#L718-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 238#L728 assume !(0 != test_~tmp___0~1); 217#L728-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 228#L738 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 199#L746-2 assume !(0 != ~pumpRunning~0); 182#L774 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret60, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 172#L806 assume !(0 == ~pumpRunning~0); 173#L781 havoc __utac_acc__Specification2_spec__2_#t~ret18, __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 214#L196 __utac_acc__Specification2_spec__2_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret18;havoc __utac_acc__Specification2_spec__2_#t~ret18; 203#L274 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 193#L274-1 [2021-08-27 16:03:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:03:18,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:18,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061400185] [2021-08-27 16:03:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:18,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:19,045 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:19,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:19,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:19,098 INFO L82 PathProgramCache]: Analyzing trace with hash 83320769, now seen corresponding path program 1 times [2021-08-27 16:03:19,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:19,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242660459] [2021-08-27 16:03:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:19,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:03:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:03:19,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:03:19,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242660459] [2021-08-27 16:03:19,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242660459] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:03:19,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:03:19,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:03:19,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901749831] [2021-08-27 16:03:19,112 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:03:19,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:03:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:03:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:03:19,113 INFO L87 Difference]: Start difference. First operand 72 states and 103 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 16:03:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:03:19,186 INFO L93 Difference]: Finished difference Result 116 states and 160 transitions. [2021-08-27 16:03:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:03:19,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 160 transitions. [2021-08-27 16:03:19,189 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 80 [2021-08-27 16:03:19,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 160 transitions. [2021-08-27 16:03:19,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 116 [2021-08-27 16:03:19,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2021-08-27 16:03:19,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 160 transitions. [2021-08-27 16:03:19,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:03:19,195 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 160 transitions. [2021-08-27 16:03:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 160 transitions. [2021-08-27 16:03:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-27 16:03:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 115 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:03:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 160 transitions. [2021-08-27 16:03:19,203 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 160 transitions. [2021-08-27 16:03:19,203 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 160 transitions. [2021-08-27 16:03:19,203 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:03:19,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 160 transitions. [2021-08-27 16:03:19,203 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 80 [2021-08-27 16:03:19,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:19,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:19,204 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:19,204 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 16:03:19,204 INFO L791 eck$LassoCheckResult]: Stem: 428#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(30);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(9);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(21);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(30);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(9);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(25);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(13);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string65.base, #t~string65.offset, 1);call write~init~int(110, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 2 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(102, #t~string67.base, 2 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 3 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(80, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(117, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(109, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(112, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string71.base, #t~string71.offset, 1);call write~init~int(110, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(102, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 3 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(32, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 2 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string77.base, #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 1 + #t~string77.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~methAndRunningLastTime~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 416#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 417#L318 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 408#L326 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 409#L134 assume 0 != main_~tmp~0; 395#L105 ~methAndRunningLastTime~0 := 0; 396#L263 havoc test_#t~nondet56, test_#t~nondet57, test_#t~nondet58, test_#t~nondet59, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 386#L274-1 [2021-08-27 16:03:19,204 INFO L793 eck$LassoCheckResult]: Loop: 386#L274-1 assume !false; 387#L709 assume test_~splverifierCounter~0 < 4; 361#L710 test_~tmp~5 := test_#t~nondet56;havoc test_#t~nondet56; 362#L718 assume !(0 != test_~tmp~5); 404#L718-1 test_~tmp___0~1 := test_#t~nondet57;havoc test_#t~nondet57; 438#L728 assume !(0 != test_~tmp___0~1); 411#L728-1 test_~tmp___2~0 := test_#t~nondet58;havoc test_#t~nondet58; 426#L738 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 391#L746-2 assume !(0 != ~pumpRunning~0); 392#L774 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret60, processEnvironment_~tmp~6;havoc processEnvironment_~tmp~6; 366#L806 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret78, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~3;havoc isHighWaterSensorDry_~retValue_acc~3; 367#L236 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~3 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~3; 412#L241 isHighWaterLevel_#t~ret78 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret78;havoc isHighWaterLevel_#t~ret78; 371#L908 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 372#L908-2 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 379#L914 processEnvironment_#t~ret60 := isHighWaterLevel_#res;processEnvironment_~tmp~6 := processEnvironment_#t~ret60;havoc processEnvironment_#t~ret60; 368#L810 assume !(0 != processEnvironment_~tmp~6); 369#L781 havoc __utac_acc__Specification2_spec__2_#t~ret18, __utac_acc__Specification2_spec__2_#t~ret19, __utac_acc__Specification2_spec__2_~tmp~1, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~1;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 413#L196 __utac_acc__Specification2_spec__2_#t~ret18 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~1 := __utac_acc__Specification2_spec__2_#t~ret18;havoc __utac_acc__Specification2_spec__2_#t~ret18; 398#L274 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 386#L274-1 [2021-08-27 16:03:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:19,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:03:19,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:19,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274736750] [2021-08-27 16:03:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:19,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:19,224 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:19,252 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:19,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:19,253 INFO L82 PathProgramCache]: Analyzing trace with hash -160889491, now seen corresponding path program 1 times [2021-08-27 16:03:19,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:19,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432471388] [2021-08-27 16:03:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:19,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:19,257 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:19,261 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:19,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:19,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1004687283, now seen corresponding path program 1 times [2021-08-27 16:03:19,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:19,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171802359] [2021-08-27 16:03:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:19,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:19,281 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:19,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:01,429 WARN L207 SmtUtils]: Spent 41.86 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:04:45,553 WARN L207 SmtUtils]: Spent 21.27 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:04:45,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:04:45 BoogieIcfgContainer [2021-08-27 16:04:45,667 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:04:45,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:04:45,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:04:45,667 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:04:45,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:03:18" (3/4) ... [2021-08-27 16:04:45,669 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:04:45,743 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:04:45,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:04:45,744 INFO L168 Benchmark]: Toolchain (without parser) took 88348.45 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 36.5 MB in the beginning and 50.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:04:45,744 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:04:45,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.99 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 35.2 MB in the end (delta: 989.7 kB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:04:45,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.40 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 32.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:04:45,745 INFO L168 Benchmark]: Boogie Preprocessor took 40.56 ms. Allocated memory is still 58.7 MB. Free memory was 32.1 MB in the beginning and 30.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:04:45,746 INFO L168 Benchmark]: RCFGBuilder took 685.01 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 43.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:04:45,746 INFO L168 Benchmark]: BuchiAutomizer took 87154.84 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 43.0 MB in the beginning and 52.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:04:45,747 INFO L168 Benchmark]: Witness Printer took 75.75 ms. Allocated memory is still 104.9 MB. Free memory was 52.5 MB in the beginning and 50.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:04:45,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.99 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 35.2 MB in the end (delta: 989.7 kB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.40 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 32.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.56 ms. Allocated memory is still 58.7 MB. Free memory was 32.1 MB in the beginning and 30.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 685.01 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 43.0 MB in the end (delta: -12.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 87154.84 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 43.0 MB in the beginning and 52.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. * Witness Printer took 75.75 ms. Allocated memory is still 104.9 MB. Free memory was 52.5 MB in the beginning and 50.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 116 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 87.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 86.8s. 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 24.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 116 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 224 SDtfs, 192 SDslu, 54 SDs, 0 SdLazy, 24 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.3ms 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: 708]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=31638} State at position 1 is {NULL=0, NULL=0, NULL=31638, NULL=31656, NULL=0, NULL=0, NULL=31641, NULL=31650, methaneLevelCritical=0, tmp=0, NULL=0, tmp___1=0, NULL=0, NULL=31648, cleanupTimeShifts=4, NULL=31653, NULL=31652, waterLevel=1, NULL=0, NULL=31663, \result=1, head=0, pumpRunning=0, tmp=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@611b5f0b=0, \result=1, NULL=0, retValue_acc=0, NULL=0, NULL=31665, NULL=0, tmp=1, NULL=0, tmp___0=0, methAndRunningLastTime=0, NULL=31654, NULL=31642, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7ee0713f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f7f4527=0, head=0, tmp=0, NULL=0, NULL=31644, NULL=31639, NULL=31649, retValue_acc=0, retValue_acc=0, NULL=0, NULL=0, NULL=31662, NULL=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c8b2f3f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49d0ad10=0, NULL=0, NULL=0, NULL=31666, NULL=0, NULL=31657, NULL=31655, NULL=0, systemActive=1, NULL=31658, \result=0, NULL=0, NULL=0, NULL=0, NULL=31651, NULL=31661, \result=0, NULL=31664, NULL=0, NULL=0, NULL=0, retValue_acc=1, NULL=31660, tmp___0=0, NULL=31640, NULL=31647, tmp___2=74, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=31643, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c9036e3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b12b056=74, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a9fcc88=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23cf2cae=0, tmp=0, NULL=31646, NULL=0, NULL=0, NULL=0, NULL=31659, NULL=31645} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L153] int waterLevel = 1; [L154] int methaneLevelCritical = 0; [L257] int methAndRunningLastTime ; [L500] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L767] int pumpRunning = 0; [L768] int systemActive = 1; [L125] int retValue_acc ; [L126] int tmp ; [L322] int retValue_acc ; [L325] retValue_acc = 1 [L326] return (retValue_acc); [L132] tmp = valid_product() [L134] COND TRUE \read(tmp) [L262] methAndRunningLastTime = 0 [L699] int splverifierCounter ; [L700] int tmp ; [L701] int tmp___0 ; [L702] int tmp___1 ; [L703] int tmp___2 ; [L706] splverifierCounter = 0 Loop: [L708] COND TRUE 1 [L710] COND TRUE splverifierCounter < 4 [L716] tmp = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp)) [L726] tmp___0 = __VERIFIER_nondet_int() [L728] COND FALSE !(\read(tmp___0)) [L736] tmp___2 = __VERIFIER_nondet_int() [L738] COND TRUE \read(tmp___2) [L922] systemActive = 1 [L774] COND FALSE !(\read(pumpRunning)) [L781] COND TRUE \read(systemActive) [L803] int tmp ; [L806] COND TRUE ! pumpRunning [L900] int retValue_acc ; [L901] int tmp ; [L902] int tmp___0 ; [L233] int retValue_acc ; [L236] COND TRUE waterLevel < 2 [L237] retValue_acc = 1 [L238] return (retValue_acc); [L906] tmp = isHighWaterSensorDry() [L908] COND TRUE \read(tmp) [L909] tmp___0 = 0 [L913] retValue_acc = tmp___0 [L914] return (retValue_acc); [L808] tmp = isHighWaterLevel() [L810] COND FALSE !(\read(tmp)) [L267] int tmp ; [L268] int tmp___0 ; [L192] int retValue_acc ; [L195] retValue_acc = methaneLevelCritical [L196] return (retValue_acc); [L272] tmp = isMethaneLevelCritical() [L274] COND FALSE !(\read(tmp)) [L290] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:04:45,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...