./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product55.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product55.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a303cc650f696ad71f04e0b60c5ac6485d0c198 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:05:36,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:05:36,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:05:36,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:05:36,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:05:36,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:05:36,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:05:36,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:05:36,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:05:36,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:05:36,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:05:36,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:05:36,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:05:36,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:05:36,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:05:36,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:05:36,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:05:36,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:05:36,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:05:36,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:05:36,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:05:36,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:05:36,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:05:36,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:05:36,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:05:36,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:05:36,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:05:36,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:05:36,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:05:36,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:05:36,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:05:36,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:05:36,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:05:36,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:05:36,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:05:36,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:05:36,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:05:36,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:05:36,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:05:36,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:05:36,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:05:36,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:05:36,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:05:36,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:05:36,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:05:36,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:05:36,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:05:36,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:05:36,556 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:05:36,556 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:05:36,556 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:05:36,556 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:05:36,557 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:05:36,557 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:05:36,557 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:05:36,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:05:36,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:05:36,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:05:36,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:05:36,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:05:36,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:05:36,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:05:36,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:05:36,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:05:36,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:05:36,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:05:36,559 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:05:36,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:05:36,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:05:36,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:05:36,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:05:36,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:05:36,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:05:36,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:05:36,561 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:05:36,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a303cc650f696ad71f04e0b60c5ac6485d0c198 [2021-08-27 16:05:36,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:05:36,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:05:36,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:05:36,842 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:05:36,845 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:05:36,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product55.cil.c [2021-08-27 16:05:36,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6804e7995/159b5085c5994bf7b821d1930125a154/FLAG82da9dfea [2021-08-27 16:05:37,280 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:05:37,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product55.cil.c [2021-08-27 16:05:37,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6804e7995/159b5085c5994bf7b821d1930125a154/FLAG82da9dfea [2021-08-27 16:05:37,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6804e7995/159b5085c5994bf7b821d1930125a154 [2021-08-27 16:05:37,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:05:37,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:05:37,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:37,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:05:37,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:05:37,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:37" (1/1) ... [2021-08-27 16:05:37,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2c7e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:37, skipping insertion in model container [2021-08-27 16:05:37,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:05:37" (1/1) ... [2021-08-27 16:05:37,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:05:37,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:05:37,968 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_product55.cil.c[19088,19101] [2021-08-27 16:05:37,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:37,984 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:05:38,055 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_product55.cil.c[19088,19101] [2021-08-27 16:05:38,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:05:38,074 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:05:38,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38 WrapperNode [2021-08-27 16:05:38,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:05:38,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:38,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:05:38,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:05:38,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:05:38,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:05:38,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:05:38,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:05:38,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:05:38,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:05:38,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:05:38,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:05:38,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (1/1) ... [2021-08-27 16:05:38,236 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:05:38,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:05:38,266 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 16:05:38,282 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 16:05:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:05:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:05:38,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:05:38,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:05:39,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:05:39,008 INFO L299 CfgBuilder]: Removed 282 assume(true) statements. [2021-08-27 16:05:39,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:39 BoogieIcfgContainer [2021-08-27 16:05:39,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:05:39,010 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:05:39,010 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:05:39,012 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:05:39,012 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:39,012 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:05:37" (1/3) ... [2021-08-27 16:05:39,013 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63a854d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:39, skipping insertion in model container [2021-08-27 16:05:39,013 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:39,013 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:05:38" (2/3) ... [2021-08-27 16:05:39,014 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63a854d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:05:39, skipping insertion in model container [2021-08-27 16:05:39,014 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:05:39,014 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:39" (3/3) ... [2021-08-27 16:05:39,015 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product55.cil.c [2021-08-27 16:05:39,038 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:05:39,039 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:05:39,039 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:05:39,039 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:05:39,039 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:05:39,039 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:05:39,039 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:05:39,039 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:05:39,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 192 states, 191 states have (on average 1.544502617801047) internal successors, (295), 191 states have internal predecessors, (295), 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 16:05:39,066 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-08-27 16:05:39,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:39,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:39,071 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:39,072 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:39,072 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:05:39,072 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 192 states, 191 states have (on average 1.544502617801047) internal successors, (295), 191 states have internal predecessors, (295), 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 16:05:39,077 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-08-27 16:05:39,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:39,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:39,078 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:39,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:39,082 INFO L791 eck$LassoCheckResult]: Stem: 169#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 53#L-1true havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 168#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 78#L75true main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 64#L993true assume 0 != main_~tmp~10; 22#L969true ~methAndRunningLastTime~0 := 0; 29#L877true havoc test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 171#L888-1true [2021-08-27 16:05:39,082 INFO L793 eck$LassoCheckResult]: Loop: 171#L888-1true assume !false; 96#L205true assume test_~splverifierCounter~0 < 4; 50#L206true test_~tmp~0 := test_#t~nondet18;havoc test_#t~nondet18; 181#L214true assume !(0 != test_~tmp~0); 105#L214-1true test_~tmp___0~0 := test_#t~nondet19;havoc test_#t~nondet19; 101#L224true assume !(0 != test_~tmp___0~0); 170#L224-1true test_~tmp___2~0 := test_#t~nondet20;havoc test_#t~nondet20; 90#L234true assume 0 != test_~tmp___2~0; 154#L240-1true assume !(0 != ~pumpRunning~0); 79#L273true assume !(0 != ~systemActive~0); 118#L280true havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 120#L131-1true __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 31#L888true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 171#L888-1true [2021-08-27 16:05:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:39,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:05:39,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:39,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405013321] [2021-08-27 16:05:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:39,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:39,210 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:39,286 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:39,288 INFO L82 PathProgramCache]: Analyzing trace with hash 16390483, now seen corresponding path program 1 times [2021-08-27 16:05:39,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:39,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179968887] [2021-08-27 16:05:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:39,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:39,293 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:39,298 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:39,299 INFO L82 PathProgramCache]: Analyzing trace with hash 849686989, now seen corresponding path program 1 times [2021-08-27 16:05:39,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:39,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154882544] [2021-08-27 16:05:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:39,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:39,402 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 16:05:39,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:39,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154882544] [2021-08-27 16:05:39,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154882544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:39,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:39,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:05:39,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970628042] [2021-08-27 16:05:39,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:39,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:05:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:05:39,525 INFO L87 Difference]: Start difference. First operand has 192 states, 191 states have (on average 1.544502617801047) internal successors, (295), 191 states have internal predecessors, (295), 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 16:05:39,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:39,653 INFO L93 Difference]: Finished difference Result 430 states and 637 transitions. [2021-08-27 16:05:39,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:05:39,655 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 430 states and 637 transitions. [2021-08-27 16:05:39,660 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 279 [2021-08-27 16:05:39,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 430 states to 409 states and 616 transitions. [2021-08-27 16:05:39,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 409 [2021-08-27 16:05:39,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 409 [2021-08-27 16:05:39,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 409 states and 616 transitions. [2021-08-27 16:05:39,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:39,668 INFO L681 BuchiCegarLoop]: Abstraction has 409 states and 616 transitions. [2021-08-27 16:05:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states and 616 transitions. [2021-08-27 16:05:39,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 229. [2021-08-27 16:05:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 229 states have (on average 1.497816593886463) internal successors, (343), 228 states have internal predecessors, (343), 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 16:05:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 343 transitions. [2021-08-27 16:05:39,712 INFO L704 BuchiCegarLoop]: Abstraction has 229 states and 343 transitions. [2021-08-27 16:05:39,712 INFO L587 BuchiCegarLoop]: Abstraction has 229 states and 343 transitions. [2021-08-27 16:05:39,712 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:05:39,712 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 229 states and 343 transitions. [2021-08-27 16:05:39,713 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 156 [2021-08-27 16:05:39,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:39,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:39,714 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:39,714 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:39,715 INFO L791 eck$LassoCheckResult]: Stem: 822#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 723#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 724#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 753#L75 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 737#L993 assume 0 != main_~tmp~10; 678#L969 ~methAndRunningLastTime~0 := 0; 679#L877 havoc test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 689#L888-1 [2021-08-27 16:05:39,715 INFO L793 eck$LassoCheckResult]: Loop: 689#L888-1 assume !false; 776#L205 assume test_~splverifierCounter~0 < 4; 718#L206 test_~tmp~0 := test_#t~nondet18;havoc test_#t~nondet18; 719#L214 assume !(0 != test_~tmp~0); 786#L214-1 test_~tmp___0~0 := test_#t~nondet19;havoc test_#t~nondet19; 780#L224 assume !(0 != test_~tmp___0~0); 782#L224-1 test_~tmp___2~0 := test_#t~nondet20;havoc test_#t~nondet20; 770#L234 assume 0 != test_~tmp___2~0; 701#L240-1 assume !(0 != ~pumpRunning~0); 754#L273 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret24, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 748#L357 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret23, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 708#L331-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret22, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 709#L305-3 assume !(0 == ~pumpRunning~0); 686#L280 havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 799#L131-1 __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 690#L888 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 689#L888-1 [2021-08-27 16:05:39,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:39,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:05:39,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:39,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435563374] [2021-08-27 16:05:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:39,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:39,745 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:39,780 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:39,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:39,781 INFO L82 PathProgramCache]: Analyzing trace with hash 566198012, now seen corresponding path program 1 times [2021-08-27 16:05:39,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:39,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556716808] [2021-08-27 16:05:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:39,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:05:39,793 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 16:05:39,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:05:39,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556716808] [2021-08-27 16:05:39,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556716808] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:05:39,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:05:39,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:05:39,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596015868] [2021-08-27 16:05:39,795 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:05:39,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:05:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:05:39,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:05:39,796 INFO L87 Difference]: Start difference. First operand 229 states and 343 transitions. cyclomatic complexity: 117 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:05:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:05:39,900 INFO L93 Difference]: Finished difference Result 235 states and 329 transitions. [2021-08-27 16:05:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:05:39,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 235 states and 329 transitions. [2021-08-27 16:05:39,903 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 164 [2021-08-27 16:05:39,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 235 states to 235 states and 329 transitions. [2021-08-27 16:05:39,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 235 [2021-08-27 16:05:39,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 235 [2021-08-27 16:05:39,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 235 states and 329 transitions. [2021-08-27 16:05:39,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:05:39,906 INFO L681 BuchiCegarLoop]: Abstraction has 235 states and 329 transitions. [2021-08-27 16:05:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states and 329 transitions. [2021-08-27 16:05:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2021-08-27 16:05:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 235 states have (on average 1.4) internal successors, (329), 234 states have internal predecessors, (329), 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 16:05:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 329 transitions. [2021-08-27 16:05:39,911 INFO L704 BuchiCegarLoop]: Abstraction has 235 states and 329 transitions. [2021-08-27 16:05:39,911 INFO L587 BuchiCegarLoop]: Abstraction has 235 states and 329 transitions. [2021-08-27 16:05:39,912 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:05:39,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 235 states and 329 transitions. [2021-08-27 16:05:39,913 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 164 [2021-08-27 16:05:39,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:05:39,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:05:39,913 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:39,914 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:05:39,914 INFO L791 eck$LassoCheckResult]: Stem: 1265#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~string27.base, #t~string27.offset := #Ultimate.allocOnStack(13);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string29.base, #t~string29.offset, 1);call write~init~int(110, #t~string29.base, 1 + #t~string29.offset, 1);call write~init~int(0, #t~string29.base, 2 + #t~string29.offset, 1);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string31.base, #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 1 + #t~string31.offset, 1);call write~init~int(102, #t~string31.base, 2 + #t~string31.offset, 1);call write~init~int(0, #t~string31.base, 3 + #t~string31.offset, 1);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string33.base, #t~string33.offset, 1);call write~init~int(80, #t~string33.base, 1 + #t~string33.offset, 1);call write~init~int(117, #t~string33.base, 2 + #t~string33.offset, 1);call write~init~int(109, #t~string33.base, 3 + #t~string33.offset, 1);call write~init~int(112, #t~string33.base, 4 + #t~string33.offset, 1);call write~init~int(58, #t~string33.base, 5 + #t~string33.offset, 1);call write~init~int(0, #t~string33.base, 6 + #t~string33.offset, 1);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string35.base, #t~string35.offset, 1);call write~init~int(110, #t~string35.base, 1 + #t~string35.offset, 1);call write~init~int(0, #t~string35.base, 2 + #t~string35.offset, 1);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string37.base, #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 1 + #t~string37.offset, 1);call write~init~int(102, #t~string37.base, 2 + #t~string37.offset, 1);call write~init~int(0, #t~string37.base, 3 + #t~string37.offset, 1);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string39.base, #t~string39.offset, 1);call write~init~int(32, #t~string39.base, 1 + #t~string39.offset, 1);call write~init~int(0, #t~string39.base, 2 + #t~string39.offset, 1);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string41.base, #t~string41.offset, 1);call write~init~int(0, #t~string41.base, 1 + #t~string41.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(21);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(21);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(30);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(9);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(25);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(30);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(9);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(25);~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4; 1186#L-1 havoc main_#res;havoc main_#t~ret81, main_~retValue_acc~13, main_~tmp~10;havoc main_~retValue_acc~13;havoc main_~tmp~10; 1187#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 1210#L75 main_#t~ret81 := valid_product_#res;main_~tmp~10 := main_#t~ret81;havoc main_#t~ret81; 1197#L993 assume 0 != main_~tmp~10; 1147#L969 ~methAndRunningLastTime~0 := 0; 1148#L877 havoc test_#t~nondet18, test_#t~nondet19, test_#t~nondet20, test_#t~nondet21, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1158#L888-1 [2021-08-27 16:05:39,914 INFO L793 eck$LassoCheckResult]: Loop: 1158#L888-1 assume !false; 1226#L205 assume test_~splverifierCounter~0 < 4; 1182#L206 test_~tmp~0 := test_#t~nondet18;havoc test_#t~nondet18; 1183#L214 assume !(0 != test_~tmp~0); 1330#L214-1 test_~tmp___0~0 := test_#t~nondet19;havoc test_#t~nondet19; 1329#L224 assume !(0 != test_~tmp___0~0); 1327#L224-1 test_~tmp___2~0 := test_#t~nondet20;havoc test_#t~nondet20; 1223#L234 assume 0 != test_~tmp___2~0; 1170#L240-1 assume !(0 != ~pumpRunning~0); 1209#L273 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret24, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1206#L357 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret23, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 1175#L331-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret22, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1176#L305-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret42, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~4;havoc isHighWaterSensorDry_~retValue_acc~4; 1252#L171-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~4 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~4; 1192#L176-3 isHighWaterLevel_#t~ret42 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret42;havoc isHighWaterLevel_#t~ret42; 1177#L459-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1121#L459-11 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 1122#L465-3 processEnvironment__wrappee__highWaterSensor_#t~ret22 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret22;havoc processEnvironment__wrappee__highWaterSensor_#t~ret22; 1235#L309-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1155#L280 havoc __utac_acc__Specification2_spec__2_#t~ret79, __utac_acc__Specification2_spec__2_#t~ret80, __utac_acc__Specification2_spec__2_~tmp~9, __utac_acc__Specification2_spec__2_~tmp___0~3;havoc __utac_acc__Specification2_spec__2_~tmp~9;havoc __utac_acc__Specification2_spec__2_~tmp___0~3;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~2;havoc isMethaneLevelCritical_~retValue_acc~2;isMethaneLevelCritical_~retValue_acc~2 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~2; 1246#L131-1 __utac_acc__Specification2_spec__2_#t~ret79 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~9 := __utac_acc__Specification2_spec__2_#t~ret79;havoc __utac_acc__Specification2_spec__2_#t~ret79; 1159#L888 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~9);~methAndRunningLastTime~0 := 0; 1158#L888-1 [2021-08-27 16:05:39,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:39,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:05:39,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:39,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783628380] [2021-08-27 16:05:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:39,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:39,981 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:40,011 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash -746930584, now seen corresponding path program 1 times [2021-08-27 16:05:40,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:40,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156151321] [2021-08-27 16:05:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:40,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:40,016 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:40,021 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:40,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:05:40,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1614115026, now seen corresponding path program 1 times [2021-08-27 16:05:40,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:05:40,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714500294] [2021-08-27 16:05:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:05:40,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:05:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:40,044 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:05:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:05:40,076 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:24,018 WARN L207 SmtUtils]: Spent 43.73 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:07:07,527 WARN L207 SmtUtils]: Spent 21.18 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:07:07,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:07:07 BoogieIcfgContainer [2021-08-27 16:07:07,637 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:07:07,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:07:07,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:07:07,647 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:07:07,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:05:39" (3/4) ... [2021-08-27 16:07:07,650 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:07:07,745 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:07:07,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:07:07,748 INFO L168 Benchmark]: Toolchain (without parser) took 90078.16 ms. Allocated memory was 75.5 MB in the beginning and 138.4 MB in the end (delta: 62.9 MB). Free memory was 58.6 MB in the beginning and 30.7 MB in the end (delta: 27.9 MB). Peak memory consumption was 90.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:07,761 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 75.5 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:07:07,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.24 ms. Allocated memory is still 75.5 MB. Free memory was 58.3 MB in the beginning and 51.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:07,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.84 ms. Allocated memory is still 75.5 MB. Free memory was 51.9 MB in the beginning and 47.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:07,770 INFO L168 Benchmark]: Boogie Preprocessor took 62.22 ms. Allocated memory is still 75.5 MB. Free memory was 47.3 MB in the beginning and 43.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:07,771 INFO L168 Benchmark]: RCFGBuilder took 785.35 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 43.8 MB in the beginning and 78.4 MB in the end (delta: -34.6 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:07,771 INFO L168 Benchmark]: BuchiAutomizer took 88627.75 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 78.4 MB in the beginning and 32.8 MB in the end (delta: 45.6 MB). Peak memory consumption was 89.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:07,775 INFO L168 Benchmark]: Witness Printer took 109.34 ms. Allocated memory is still 138.4 MB. Free memory was 32.8 MB in the beginning and 30.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:07,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 75.5 MB. Free memory is still 56.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 405.24 ms. Allocated memory is still 75.5 MB. Free memory was 58.3 MB in the beginning and 51.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.84 ms. Allocated memory is still 75.5 MB. Free memory was 51.9 MB in the beginning and 47.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.22 ms. Allocated memory is still 75.5 MB. Free memory was 47.3 MB in the beginning and 43.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 785.35 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 43.8 MB in the beginning and 78.4 MB in the end (delta: -34.6 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 88627.75 ms. Allocated memory was 102.8 MB in the beginning and 138.4 MB in the end (delta: 35.7 MB). Free memory was 78.4 MB in the beginning and 32.8 MB in the end (delta: 45.6 MB). Peak memory consumption was 89.8 MB. Max. memory is 16.1 GB. * Witness Printer took 109.34 ms. Allocated memory is still 138.4 MB. Free memory was 32.8 MB in the beginning and 30.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 235 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 88.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 88.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 21.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 180 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 235 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 502 SDtfs, 1518 SDslu, 1109 SDs, 0 SdLazy, 81 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 131.7ms 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: 204]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=20466} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=20466, NULL=20470, NULL=0, NULL=20492, NULL=20472, methaneLevelCritical=0, NULL=20473, retValue_acc=0, NULL=0, tmp___1=0, NULL=20486, NULL=0, NULL=20477, cleanupTimeShifts=4, tmp=0, tmp=1, NULL=20487, NULL=0, waterLevel=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a72c2bb=0, tmp___0=0, \result=1, head=0, pumpRunning=0, NULL=20471, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c834a7c=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, tmp=1, NULL=20482, NULL=0, NULL=0, NULL=0, NULL=0, methAndRunningLastTime=0, NULL=20468, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@335363d8=0, NULL=20481, NULL=20494, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1951203d=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65441384=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12b38f08=56, NULL=20479, NULL=0, NULL=0, NULL=0, NULL=20476, NULL=20490, NULL=20488, NULL=0, NULL=20478, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@170178b7=0, NULL=20485, tmp=0, NULL=20483, tmp___0=0, NULL=0, NULL=20474, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5672e028=0, NULL=20467, NULL=0, NULL=0, systemActive=1, \result=0, retValue_acc=0, NULL=20493, retValue_acc=0, \result=0, NULL=20484, NULL=0, NULL=20475, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15332b38=0, NULL=20469, NULL=20491, retValue_acc=1, tmp___0=0, tmp___2=56, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=20489, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56515158=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@246b849d=0, NULL=0, NULL=0, NULL=20480, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L88] int waterLevel = 1; [L89] int methaneLevelCritical = 0; [L265] int pumpRunning = 0; [L266] int systemActive = 1; [L673] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L871] int methAndRunningLastTime ; [L910] int cleanupTimeShifts = 4; [L984] int retValue_acc ; [L985] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L991] tmp = valid_product() [L993] COND TRUE \read(tmp) [L876] methAndRunningLastTime = 0 [L195] int splverifierCounter ; [L196] int tmp ; [L197] int tmp___0 ; [L198] int tmp___1 ; [L199] int tmp___2 ; [L202] splverifierCounter = 0 Loop: [L204] COND TRUE 1 [L206] COND TRUE splverifierCounter < 4 [L212] tmp = __VERIFIER_nondet_int() [L214] COND FALSE !(\read(tmp)) [L222] tmp___0 = __VERIFIER_nondet_int() [L224] COND FALSE !(\read(tmp___0)) [L232] tmp___2 = __VERIFIER_nondet_int() [L234] COND TRUE \read(tmp___2) [L273] COND FALSE !(\read(pumpRunning)) [L280] COND TRUE \read(systemActive) [L354] int tmp ; [L357] COND FALSE !(\read(pumpRunning)) [L328] int tmp ; [L331] COND FALSE !(\read(pumpRunning)) [L302] int tmp ; [L305] COND TRUE ! pumpRunning [L451] int retValue_acc ; [L452] int tmp ; [L453] int tmp___0 ; [L168] int retValue_acc ; [L171] COND TRUE waterLevel < 2 [L172] retValue_acc = 1 [L173] return (retValue_acc); [L457] tmp = isHighWaterSensorDry() [L459] COND TRUE \read(tmp) [L460] tmp___0 = 0 [L464] retValue_acc = tmp___0 [L465] return (retValue_acc); [L307] tmp = isHighWaterLevel() [L309] COND FALSE !(\read(tmp)) [L881] int tmp ; [L882] int tmp___0 ; [L127] int retValue_acc ; [L130] retValue_acc = methaneLevelCritical [L131] return (retValue_acc); [L886] tmp = isMethaneLevelCritical() [L888] COND FALSE !(\read(tmp)) [L904] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:07:07,835 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...