./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product39.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_product39.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 bee6f831173327ce1f460fb3d7d046a57a66e8b4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 16:03:44,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:03:44,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:03:44,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:03:44,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:03:44,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:03:44,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:03:44,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:03:44,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:03:44,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:03:44,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:03:44,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:03:44,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:03:44,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:03:44,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:03:44,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:03:44,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:03:44,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:03:44,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:03:44,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:03:44,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:03:44,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:03:44,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:03:44,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:03:44,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:03:44,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:03:44,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:03:44,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:03:44,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:03:44,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:03:44,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:03:44,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:03:44,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:03:44,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:03:44,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:03:44,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:03:44,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:03:44,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:03:44,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:03:44,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:03:44,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:03:44,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:03:44,282 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:03:44,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:03:44,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:03:44,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:03:44,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:03:44,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:03:44,285 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:03:44,285 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:03:44,285 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:03:44,285 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:03:44,286 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:03:44,286 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:03:44,286 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:03:44,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:03:44,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:03:44,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:03:44,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:03:44,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:03:44,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:03:44,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:03:44,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:03:44,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:03:44,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:03:44,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:03:44,295 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:03:44,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:03:44,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:03:44,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:03:44,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:03:44,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:03:44,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:03:44,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:03:44,297 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:03:44,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bee6f831173327ce1f460fb3d7d046a57a66e8b4 [2021-08-27 16:03:44,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:03:44,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:03:44,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:03:44,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:03:44,535 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:03:44,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c [2021-08-27 16:03:44,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec690b72/b80a5759410b4655ab2330d65c1a38ff/FLAG563bacb5d [2021-08-27 16:03:44,951 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:03:44,952 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product39.cil.c [2021-08-27 16:03:44,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec690b72/b80a5759410b4655ab2330d65c1a38ff/FLAG563bacb5d [2021-08-27 16:03:45,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ec690b72/b80a5759410b4655ab2330d65c1a38ff [2021-08-27 16:03:45,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:03:45,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:03:45,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:03:45,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:03:45,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:03:45,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636899e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45, skipping insertion in model container [2021-08-27 16:03:45,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:03:45,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:03:45,538 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_product39.cil.c[4763,4776] [2021-08-27 16:03:45,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:03:45,625 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:03:45,645 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_product39.cil.c[4763,4776] [2021-08-27 16:03:45,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:03:45,691 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:03:45,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45 WrapperNode [2021-08-27 16:03:45,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:03:45,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:03:45,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:03:45,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:03:45,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:03:45,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:03:45,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:03:45,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:03:45,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:03:45,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:03:45,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:03:45,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:03:45,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (1/1) ... [2021-08-27 16:03:45,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:03:45,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:03:45,805 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 16:03:45,815 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 16:03:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:03:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:03:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:03:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:03:46,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:03:46,508 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-08-27 16:03:46,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:03:46 BoogieIcfgContainer [2021-08-27 16:03:46,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:03:46,510 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:03:46,510 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:03:46,513 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:03:46,514 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:03:46,514 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:03:45" (1/3) ... [2021-08-27 16:03:46,515 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66344b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:03:46, skipping insertion in model container [2021-08-27 16:03:46,515 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:03:46,515 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:03:45" (2/3) ... [2021-08-27 16:03:46,516 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66344b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:03:46, skipping insertion in model container [2021-08-27 16:03:46,516 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:03:46,516 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:03:46" (3/3) ... [2021-08-27 16:03:46,517 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2021-08-27 16:03:46,545 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:03:46,545 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:03:46,546 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:03:46,546 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:03:46,546 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:03:46,546 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:03:46,546 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:03:46,546 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:03:46,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 114 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 113 states have internal predecessors, (175), 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 16:03:46,569 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-08-27 16:03:46,570 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:46,570 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:46,574 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:46,575 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:46,575 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:03:46,575 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 114 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 113 states have internal predecessors, (175), 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 16:03:46,579 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-08-27 16:03:46,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:46,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:46,580 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:46,580 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:46,583 INFO L791 eck$LassoCheckResult]: Stem: 105#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string34.base, #t~string34.offset, 1);call write~init~int(80, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(117, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(109, #t~string34.base, 3 + #t~string34.offset, 1);call write~init~int(112, #t~string34.base, 4 + #t~string34.offset, 1);call write~init~int(58, #t~string34.base, 5 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 6 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(110, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 2 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 3 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string40.base, #t~string40.offset, 1);call write~init~int(32, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 33#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 111#L582true havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 39#L590true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 52#L233true assume 0 != main_~tmp~0; 96#L204true ~methAndRunningLastTime~0 := 0; 15#L255true havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 22#L266-1true [2021-08-27 16:03:46,583 INFO L793 eck$LassoCheckResult]: Loop: 22#L266-1true assume !false; 74#L309true assume test_~splverifierCounter~0 < 4; 60#L310true test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 108#L318true assume !(0 != test_~tmp~2); 55#L318-1true test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 90#L328true assume !(0 != test_~tmp___0~1); 64#L328-1true test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 41#L338true assume 0 != test_~tmp___2~0; 98#L344-1true assume !(0 != ~pumpRunning~0); 116#L374true assume !(0 != ~systemActive~0); 57#L381true 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~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 91#L92-1true __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; 13#L266true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 22#L266-1true [2021-08-27 16:03:46,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:46,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:03:46,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:46,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379050619] [2021-08-27 16:03:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:46,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:46,742 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:46,839 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:46,842 INFO L82 PathProgramCache]: Analyzing trace with hash 12881107, now seen corresponding path program 1 times [2021-08-27 16:03:46,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:46,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043961564] [2021-08-27 16:03:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:46,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:46,853 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:46,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:46,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:46,858 INFO L82 PathProgramCache]: Analyzing trace with hash 846177613, now seen corresponding path program 1 times [2021-08-27 16:03:46,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:46,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502858258] [2021-08-27 16:03:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:46,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:03:46,983 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 16:03:46,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:03:46,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502858258] [2021-08-27 16:03:46,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502858258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:03:46,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:03:46,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:03:46,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828666684] [2021-08-27 16:03:47,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:03:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:03:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:03:47,142 INFO L87 Difference]: Start difference. First operand has 114 states, 113 states have (on average 1.5486725663716814) internal successors, (175), 113 states have internal predecessors, (175), 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 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 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 16:03:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:03:47,284 INFO L93 Difference]: Finished difference Result 274 states and 397 transitions. [2021-08-27 16:03:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:03:47,285 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 274 states and 397 transitions. [2021-08-27 16:03:47,315 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 175 [2021-08-27 16:03:47,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 274 states to 253 states and 376 transitions. [2021-08-27 16:03:47,323 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 253 [2021-08-27 16:03:47,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 253 [2021-08-27 16:03:47,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 253 states and 376 transitions. [2021-08-27 16:03:47,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:03:47,329 INFO L681 BuchiCegarLoop]: Abstraction has 253 states and 376 transitions. [2021-08-27 16:03:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states and 376 transitions. [2021-08-27 16:03:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 151. [2021-08-27 16:03:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 151 states have (on average 1.4768211920529801) internal successors, (223), 150 states have internal predecessors, (223), 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 16:03:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 223 transitions. [2021-08-27 16:03:47,357 INFO L704 BuchiCegarLoop]: Abstraction has 151 states and 223 transitions. [2021-08-27 16:03:47,357 INFO L587 BuchiCegarLoop]: Abstraction has 151 states and 223 transitions. [2021-08-27 16:03:47,357 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:03:47,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 151 states and 223 transitions. [2021-08-27 16:03:47,358 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 104 [2021-08-27 16:03:47,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:47,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:47,359 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:47,359 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:47,359 INFO L791 eck$LassoCheckResult]: Stem: 513#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string34.base, #t~string34.offset, 1);call write~init~int(80, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(117, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(109, #t~string34.base, 3 + #t~string34.offset, 1);call write~init~int(112, #t~string34.base, 4 + #t~string34.offset, 1);call write~init~int(58, #t~string34.base, 5 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 6 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(110, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 2 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 3 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string40.base, #t~string40.offset, 1);call write~init~int(32, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 455#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 456#L582 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 461#L590 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 462#L233 assume 0 != main_~tmp~0; 478#L204 ~methAndRunningLastTime~0 := 0; 428#L255 havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 422#L266-1 [2021-08-27 16:03:47,359 INFO L793 eck$LassoCheckResult]: Loop: 422#L266-1 assume !false; 439#L309 assume test_~splverifierCounter~0 < 4; 487#L310 test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 488#L318 assume !(0 != test_~tmp~2); 481#L318-1 test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 482#L328 assume !(0 != test_~tmp___0~1); 467#L328-1 test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 463#L338 assume 0 != test_~tmp___2~0; 443#L344-1 assume !(0 != ~pumpRunning~0); 469#L374 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret25, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 503#L432 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret24, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 505#L406-1 assume !(0 == ~pumpRunning~0); 452#L381 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~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 483#L92-1 __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; 424#L266 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 422#L266-1 [2021-08-27 16:03:47,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:47,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:03:47,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:47,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631220261] [2021-08-27 16:03:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:47,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:47,398 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:47,438 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:47,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1348521866, now seen corresponding path program 1 times [2021-08-27 16:03:47,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:47,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319005332] [2021-08-27 16:03:47,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:47,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:03:47,452 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 16:03:47,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:03:47,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319005332] [2021-08-27 16:03:47,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319005332] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:03:47,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:03:47,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:03:47,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97766489] [2021-08-27 16:03:47,457 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:03:47,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:03:47,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:03:47,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:03:47,458 INFO L87 Difference]: Start difference. First operand 151 states and 223 transitions. cyclomatic complexity: 75 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 16:03:47,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:03:47,525 INFO L93 Difference]: Finished difference Result 193 states and 269 transitions. [2021-08-27 16:03:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:03:47,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 193 states and 269 transitions. [2021-08-27 16:03:47,528 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2021-08-27 16:03:47,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 193 states to 193 states and 269 transitions. [2021-08-27 16:03:47,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 193 [2021-08-27 16:03:47,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2021-08-27 16:03:47,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 269 transitions. [2021-08-27 16:03:47,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:03:47,535 INFO L681 BuchiCegarLoop]: Abstraction has 193 states and 269 transitions. [2021-08-27 16:03:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states and 269 transitions. [2021-08-27 16:03:47,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-08-27 16:03:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 193 states have (on average 1.3937823834196892) internal successors, (269), 192 states have internal predecessors, (269), 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 16:03:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 269 transitions. [2021-08-27 16:03:47,554 INFO L704 BuchiCegarLoop]: Abstraction has 193 states and 269 transitions. [2021-08-27 16:03:47,554 INFO L587 BuchiCegarLoop]: Abstraction has 193 states and 269 transitions. [2021-08-27 16:03:47,554 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:03:47,554 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 269 transitions. [2021-08-27 16:03:47,555 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 136 [2021-08-27 16:03:47,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:03:47,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:03:47,555 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:03:47,555 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] [2021-08-27 16:03:47,555 INFO L791 eck$LassoCheckResult]: Stem: 881#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~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(13);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(110, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 2 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string32.base, #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(102, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 3 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string34.base, #t~string34.offset, 1);call write~init~int(80, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(117, #t~string34.base, 2 + #t~string34.offset, 1);call write~init~int(109, #t~string34.base, 3 + #t~string34.offset, 1);call write~init~int(112, #t~string34.base, 4 + #t~string34.offset, 1);call write~init~int(58, #t~string34.base, 5 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 6 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(110, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 2 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string38.base, #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(102, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 3 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string40.base, #t~string40.offset, 1);call write~init~int(32, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(30);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(9);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(21);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(30);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(9);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(25);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~methAndRunningLastTime~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 809#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~3, main_~tmp~0;havoc main_~retValue_acc~3;havoc main_~tmp~0; 810#L582 havoc valid_product_#res;havoc valid_product_~retValue_acc~8;havoc valid_product_~retValue_acc~8;valid_product_~retValue_acc~8 := 1;valid_product_#res := valid_product_~retValue_acc~8; 815#L590 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 816#L233 assume 0 != main_~tmp~0; 833#L204 ~methAndRunningLastTime~0 := 0; 780#L255 havoc test_#t~nondet20, test_#t~nondet21, test_#t~nondet22, test_#t~nondet23, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 781#L266-1 [2021-08-27 16:03:47,556 INFO L793 eck$LassoCheckResult]: Loop: 781#L266-1 assume !false; 927#L309 assume test_~splverifierCounter~0 < 4; 843#L310 test_~tmp~2 := test_#t~nondet20;havoc test_#t~nondet20; 844#L318 assume !(0 != test_~tmp~2); 837#L318-1 test_~tmp___0~1 := test_#t~nondet21;havoc test_#t~nondet21; 838#L328 assume !(0 != test_~tmp___0~1); 822#L328-1 test_~tmp___2~0 := test_#t~nondet22;havoc test_#t~nondet22; 818#L338 assume 0 != test_~tmp___2~0; 797#L344-1 assume !(0 != ~pumpRunning~0); 876#L374 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret25, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 862#L432 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret24, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 863#L406-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret43, isHighWaterLevel_~retValue_acc~6, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~6;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 879#L132-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 850#L137-1 isHighWaterLevel_#t~ret43 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret43;havoc isHighWaterLevel_#t~ret43; 851#L534-3 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~2 := 0; 811#L534-5 isHighWaterLevel_~retValue_acc~6 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~6; 756#L540-1 processEnvironment__wrappee__highWaterSensor_#t~ret24 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret24;havoc processEnvironment__wrappee__highWaterSensor_#t~ret24; 757#L410-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 805#L381 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~0;havoc isMethaneLevelCritical_~retValue_acc~0;isMethaneLevelCritical_~retValue_acc~0 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~0; 839#L92-1 __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; 871#L266 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~1);~methAndRunningLastTime~0 := 0; 781#L266-1 [2021-08-27 16:03:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:47,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:03:47,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:47,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686413487] [2021-08-27 16:03:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:47,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:47,592 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:47,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:47,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1406211850, now seen corresponding path program 1 times [2021-08-27 16:03:47,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:47,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98495819] [2021-08-27 16:03:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:47,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:47,645 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:47,655 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:03:47,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:03:47,655 INFO L82 PathProgramCache]: Analyzing trace with hash 366929776, now seen corresponding path program 1 times [2021-08-27 16:03:47,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:03:47,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702297194] [2021-08-27 16:03:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:03:47,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:03:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:47,686 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:03:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:03:47,712 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:25,545 WARN L207 SmtUtils]: Spent 37.64 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:05:04,050 WARN L207 SmtUtils]: Spent 18.91 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:05:04,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:05:04 BoogieIcfgContainer [2021-08-27 16:05:04,192 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:05:04,193 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:05:04,193 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:05:04,193 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:05:04,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:03:46" (3/4) ... [2021-08-27 16:05:04,195 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:05:04,250 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:05:04,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:05:04,253 INFO L168 Benchmark]: Toolchain (without parser) took 78905.00 ms. Allocated memory was 62.9 MB in the beginning and 119.5 MB in the end (delta: 56.6 MB). Free memory was 42.5 MB in the beginning and 69.4 MB in the end (delta: -26.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:04,254 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 62.9 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:05:04,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.07 ms. Allocated memory is still 62.9 MB. Free memory was 42.2 MB in the beginning and 37.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:04,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.37 ms. Allocated memory is still 62.9 MB. Free memory was 37.6 MB in the beginning and 34.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:04,254 INFO L168 Benchmark]: Boogie Preprocessor took 33.57 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 31.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:04,255 INFO L168 Benchmark]: RCFGBuilder took 728.82 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 31.5 MB in the beginning and 49.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:04,255 INFO L168 Benchmark]: BuchiAutomizer took 77682.12 ms. Allocated memory was 77.6 MB in the beginning and 119.5 MB in the end (delta: 41.9 MB). Free memory was 49.5 MB in the beginning and 71.5 MB in the end (delta: -22.0 MB). Peak memory consumption was 75.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:04,255 INFO L168 Benchmark]: Witness Printer took 59.76 ms. Allocated memory is still 119.5 MB. Free memory was 71.5 MB in the beginning and 69.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:04,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 62.9 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.07 ms. Allocated memory is still 62.9 MB. Free memory was 42.2 MB in the beginning and 37.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.37 ms. Allocated memory is still 62.9 MB. Free memory was 37.6 MB in the beginning and 34.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.57 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 31.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 728.82 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 31.5 MB in the beginning and 49.6 MB in the end (delta: -18.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 77682.12 ms. Allocated memory was 77.6 MB in the beginning and 119.5 MB in the end (delta: 41.9 MB). Free memory was 49.5 MB in the beginning and 71.5 MB in the end (delta: -22.0 MB). Peak memory consumption was 75.2 MB. Max. memory is 16.1 GB. * Witness Printer took 59.76 ms. Allocated memory is still 119.5 MB. Free memory was 71.5 MB in the beginning and 69.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 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 193 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 77.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 77.2s. Construction of modules took 0.1s. 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 37.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 102 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 193 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 319 SDtfs, 740 SDslu, 800 SDs, 0 SdLazy, 73 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 125.2ms 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: 308]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=974} State at position 1 is {NULL=0, NULL=0, NULL=978, NULL=0, NULL=974, NULL=0, NULL=975, NULL=993, methaneLevelCritical=0, tmp=0, NULL=0, NULL=997, NULL=0, tmp___1=0, retValue_acc=0, NULL=0, NULL=992, cleanupTimeShifts=4, NULL=996, NULL=977, waterLevel=1, NULL=0, NULL=0, NULL=0, \result=1, head=0, pumpRunning=0, tmp=1, NULL=999, NULL=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fbc49df=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b95432=70, \result=1, NULL=0, NULL=0, NULL=981, NULL=0, NULL=0, NULL=0, NULL=0, tmp=1, NULL=989, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ce9150c=0, methAndRunningLastTime=0, NULL=983, NULL=976, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@459c012d=0, head=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e66f553=0, NULL=0, NULL=1001, retValue_acc=0, NULL=0, retValue_acc=0, NULL=1000, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b48b336=0, NULL=995, NULL=985, NULL=994, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a73248f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57f40a47=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=982, tmp=0, NULL=980, NULL=0, systemActive=1, NULL=0, NULL=0, NULL=1002, \result=0, NULL=0, NULL=987, \result=0, NULL=988, NULL=0, tmp___0=0, NULL=984, retValue_acc=1, NULL=990, tmp___2=70, splverifierCounter=0, NULL=0, \result=0, NULL=991, NULL=979, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36fe538=0, NULL=986, NULL=998, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c858468=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L143] int cleanupTimeShifts = 4; [L249] int methAndRunningLastTime ; [L367] int pumpRunning = 0; [L368] int systemActive = 1; [L764] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L224] int retValue_acc ; [L225] int tmp ; [L586] int retValue_acc ; [L589] retValue_acc = 1 [L590] return (retValue_acc); [L231] tmp = valid_product() [L233] COND TRUE \read(tmp) [L254] methAndRunningLastTime = 0 [L299] int splverifierCounter ; [L300] int tmp ; [L301] int tmp___0 ; [L302] int tmp___1 ; [L303] int tmp___2 ; [L306] splverifierCounter = 0 Loop: [L308] COND TRUE 1 [L310] COND TRUE splverifierCounter < 4 [L316] tmp = __VERIFIER_nondet_int() [L318] COND FALSE !(\read(tmp)) [L326] tmp___0 = __VERIFIER_nondet_int() [L328] COND FALSE !(\read(tmp___0)) [L336] tmp___2 = __VERIFIER_nondet_int() [L338] COND TRUE \read(tmp___2) [L374] COND FALSE !(\read(pumpRunning)) [L381] COND TRUE \read(systemActive) [L429] int tmp ; [L432] COND FALSE !(\read(pumpRunning)) [L403] int tmp ; [L406] COND TRUE ! pumpRunning [L526] int retValue_acc ; [L527] int tmp ; [L528] int tmp___0 ; [L129] int retValue_acc ; [L132] COND TRUE waterLevel < 2 [L133] retValue_acc = 1 [L134] return (retValue_acc); [L532] tmp = isHighWaterSensorDry() [L534] COND TRUE \read(tmp) [L535] tmp___0 = 0 [L539] retValue_acc = tmp___0 [L540] return (retValue_acc); [L408] tmp = isHighWaterLevel() [L410] COND FALSE !(\read(tmp)) [L259] int tmp ; [L260] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); [L264] tmp = isMethaneLevelCritical() [L266] COND FALSE !(\read(tmp)) [L282] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:05:04,297 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...