./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product46.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_product46.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 2a32a0ee09bc3ccadab9e5f62985b534d4160a7b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:04:30,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:04:30,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:04:30,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:04:30,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:04:30,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:04:30,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:04:30,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:04:30,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:04:30,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:04:30,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:04:30,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:04:30,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:04:30,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:04:30,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:04:30,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:04:30,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:04:30,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:04:30,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:04:30,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:04:30,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:04:30,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:04:30,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:04:30,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:04:30,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:04:30,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:04:30,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:04:30,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:04:30,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:04:30,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:04:30,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:04:30,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:04:30,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:04:30,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:04:30,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:04:30,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:04:30,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:04:30,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:04:30,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:04:30,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:04:30,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:04:30,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:04:30,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:04:30,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:04:30,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:04:30,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:04:30,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:04:30,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:04:30,670 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:04:30,670 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:04:30,670 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:04:30,670 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:04:30,671 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:04:30,671 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:04:30,672 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:04:30,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:04:30,672 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:04:30,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:04:30,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:04:30,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:04:30,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:04:30,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:04:30,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:04:30,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:04:30,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:04:30,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:04:30,683 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:04:30,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:04:30,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:04:30,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:04:30,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:04:30,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:04:30,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:04:30,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:04:30,686 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:04:30,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a32a0ee09bc3ccadab9e5f62985b534d4160a7b [2021-08-27 16:04:30,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:04:30,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:04:30,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:04:31,000 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:04:31,000 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:04:31,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product46.cil.c [2021-08-27 16:04:31,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb06d877/5d3df37fd25a4071a9112ce7dfd52084/FLAG3989b87d4 [2021-08-27 16:04:31,550 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:04:31,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product46.cil.c [2021-08-27 16:04:31,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb06d877/5d3df37fd25a4071a9112ce7dfd52084/FLAG3989b87d4 [2021-08-27 16:04:32,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb06d877/5d3df37fd25a4071a9112ce7dfd52084 [2021-08-27 16:04:32,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:04:32,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:04:32,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:32,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:04:32,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:04:32,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f83979f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32, skipping insertion in model container [2021-08-27 16:04:32,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:04:32,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:04:32,345 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_product46.cil.c[16850,16863] [2021-08-27 16:04:32,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:32,356 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:04:32,420 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_product46.cil.c[16850,16863] [2021-08-27 16:04:32,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:32,440 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:04:32,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32 WrapperNode [2021-08-27 16:04:32,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:32,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:32,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:04:32,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:04:32,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:32,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:04:32,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:04:32,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:04:32,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:04:32,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:04:32,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:04:32,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:04:32,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (1/1) ... [2021-08-27 16:04:32,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:04:32,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:04:32,622 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 16:04:32,649 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 16:04:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:04:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:04:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:04:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:04:33,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:04:33,380 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-08-27 16:04:33,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:33 BoogieIcfgContainer [2021-08-27 16:04:33,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:04:33,383 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:04:33,384 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:04:33,388 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:04:33,388 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:33,388 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:04:32" (1/3) ... [2021-08-27 16:04:33,389 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43f5d947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:33, skipping insertion in model container [2021-08-27 16:04:33,389 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:33,389 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:32" (2/3) ... [2021-08-27 16:04:33,390 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43f5d947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:33, skipping insertion in model container [2021-08-27 16:04:33,390 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:33,390 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:33" (3/3) ... [2021-08-27 16:04:33,391 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2021-08-27 16:04:33,428 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:04:33,429 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:04:33,429 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:04:33,429 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:04:33,429 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:04:33,429 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:04:33,429 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:04:33,430 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:04:33,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 130 states, 129 states have (on average 1.5193798449612403) internal successors, (196), 129 states have internal predecessors, (196), 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 16:04:33,469 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 16:04:33,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:33,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:33,475 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:33,475 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:33,475 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:04:33,476 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 130 states, 129 states have (on average 1.5193798449612403) internal successors, (196), 129 states have internal predecessors, (196), 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 16:04:33,482 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 83 [2021-08-27 16:04:33,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:33,482 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:33,483 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:33,483 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:33,487 INFO L791 eck$LassoCheckResult]: Stem: 114#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(13);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string46.base, #t~string46.offset, 1);call write~init~int(77, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(101, #t~string46.base, 2 + #t~string46.offset, 1);call write~init~int(116, #t~string46.base, 3 + #t~string46.offset, 1);call write~init~int(104, #t~string46.base, 4 + #t~string46.offset, 1);call write~init~int(58, #t~string46.base, 5 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 6 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string48.base, #t~string48.offset, 1);call write~init~int(82, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(73, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(84, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 4 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(75, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string52.base, #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 1 + #t~string52.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 42#L-1true havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 113#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; 54#L75true main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 92#L634true assume 0 != main_~tmp~3; 61#L608true ~methAndRunningLastTime~0 := 0; 96#L871true havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 4#L882-1true [2021-08-27 16:04:33,487 INFO L793 eck$LassoCheckResult]: Loop: 4#L882-1true assume !false; 87#L915true assume test_~splverifierCounter~0 < 4; 111#L916true test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 83#L924true assume !(0 != test_~tmp~9); 105#L924-1true test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 93#L934true assume !(0 != test_~tmp___0~2); 81#L934-1true test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 9#L944true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 47#L952-2true assume !(0 != ~pumpRunning~0); 91#L660true assume !(0 != ~systemActive~0); 37#L667true havoc __utac_acc__Specification2_spec__2_#t~ret75, __utac_acc__Specification2_spec__2_#t~ret76, __utac_acc__Specification2_spec__2_~tmp~8, __utac_acc__Specification2_spec__2_~tmp___0~1;havoc __utac_acc__Specification2_spec__2_~tmp~8;havoc __utac_acc__Specification2_spec__2_~tmp___0~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~5;havoc isMethaneLevelCritical_~retValue_acc~5;isMethaneLevelCritical_~retValue_acc~5 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~5; 6#L496-3true __utac_acc__Specification2_spec__2_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~8 := __utac_acc__Specification2_spec__2_#t~ret75;havoc __utac_acc__Specification2_spec__2_#t~ret75; 39#L882true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~8);~methAndRunningLastTime~0 := 0; 4#L882-1true [2021-08-27 16:04:33,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:33,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:04:33,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:33,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020659593] [2021-08-27 16:04:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:33,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:33,721 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:33,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:33,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:33,867 INFO L82 PathProgramCache]: Analyzing trace with hash 5923915, now seen corresponding path program 1 times [2021-08-27 16:04:33,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:33,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706705724] [2021-08-27 16:04:33,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:33,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:33,923 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 16:04:33,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:33,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706705724] [2021-08-27 16:04:33,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706705724] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:33,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:33,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:04:33,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064881675] [2021-08-27 16:04:33,928 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:33,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:04:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:04:33,958 INFO L87 Difference]: Start difference. First operand has 130 states, 129 states have (on average 1.5193798449612403) internal successors, (196), 129 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:34,023 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2021-08-27 16:04:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:04:34,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 186 transitions. [2021-08-27 16:04:34,030 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-08-27 16:04:34,034 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 123 states and 178 transitions. [2021-08-27 16:04:34,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2021-08-27 16:04:34,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 123 [2021-08-27 16:04:34,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 178 transitions. [2021-08-27 16:04:34,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:34,037 INFO L681 BuchiCegarLoop]: Abstraction has 123 states and 178 transitions. [2021-08-27 16:04:34,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 178 transitions. [2021-08-27 16:04:34,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-08-27 16:04:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 123 states have (on average 1.4471544715447155) internal successors, (178), 122 states have internal predecessors, (178), 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 16:04:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 178 transitions. [2021-08-27 16:04:34,064 INFO L704 BuchiCegarLoop]: Abstraction has 123 states and 178 transitions. [2021-08-27 16:04:34,064 INFO L587 BuchiCegarLoop]: Abstraction has 123 states and 178 transitions. [2021-08-27 16:04:34,064 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:04:34,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 123 states and 178 transitions. [2021-08-27 16:04:34,067 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2021-08-27 16:04:34,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:34,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:34,068 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:34,068 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:34,068 INFO L791 eck$LassoCheckResult]: Stem: 386#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(13);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string46.base, #t~string46.offset, 1);call write~init~int(77, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(101, #t~string46.base, 2 + #t~string46.offset, 1);call write~init~int(116, #t~string46.base, 3 + #t~string46.offset, 1);call write~init~int(104, #t~string46.base, 4 + #t~string46.offset, 1);call write~init~int(58, #t~string46.base, 5 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 6 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string48.base, #t~string48.offset, 1);call write~init~int(82, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(73, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(84, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 4 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(75, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string52.base, #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 1 + #t~string52.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 336#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 337#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; 348#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 349#L634 assume 0 != main_~tmp~3; 351#L608 ~methAndRunningLastTime~0 := 0; 352#L871 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 269#L882-1 [2021-08-27 16:04:34,068 INFO L793 eck$LassoCheckResult]: Loop: 269#L882-1 assume !false; 270#L915 assume test_~splverifierCounter~0 < 4; 378#L916 test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 374#L924 assume !(0 != test_~tmp~9); 315#L924-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 381#L934 assume !(0 != test_~tmp___0~2); 373#L934-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 279#L944 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 281#L952-2 assume !(0 != ~pumpRunning~0); 285#L660 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret55, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 377#L718 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret54, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 338#L692-1 assume !(0 == ~pumpRunning~0); 278#L667 havoc __utac_acc__Specification2_spec__2_#t~ret75, __utac_acc__Specification2_spec__2_#t~ret76, __utac_acc__Specification2_spec__2_~tmp~8, __utac_acc__Specification2_spec__2_~tmp___0~1;havoc __utac_acc__Specification2_spec__2_~tmp~8;havoc __utac_acc__Specification2_spec__2_~tmp___0~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~5;havoc isMethaneLevelCritical_~retValue_acc~5;isMethaneLevelCritical_~retValue_acc~5 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~5; 275#L496-3 __utac_acc__Specification2_spec__2_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~8 := __utac_acc__Specification2_spec__2_#t~ret75;havoc __utac_acc__Specification2_spec__2_#t~ret75; 276#L882 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~8);~methAndRunningLastTime~0 := 0; 269#L882-1 [2021-08-27 16:04:34,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:34,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:04:34,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:34,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974480293] [2021-08-27 16:04:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:34,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:34,105 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:34,146 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:34,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1682371955, now seen corresponding path program 1 times [2021-08-27 16:04:34,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:34,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871212076] [2021-08-27 16:04:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:34,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:34,182 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 16:04:34,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:34,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871212076] [2021-08-27 16:04:34,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871212076] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:34,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:34,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:04:34,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952871997] [2021-08-27 16:04:34,184 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:34,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:34,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:04:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:04:34,185 INFO L87 Difference]: Start difference. First operand 123 states and 178 transitions. cyclomatic complexity: 57 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 16:04:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:34,268 INFO L93 Difference]: Finished difference Result 167 states and 232 transitions. [2021-08-27 16:04:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:04:34,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167 states and 232 transitions. [2021-08-27 16:04:34,272 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-08-27 16:04:34,277 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167 states to 167 states and 232 transitions. [2021-08-27 16:04:34,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167 [2021-08-27 16:04:34,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 167 [2021-08-27 16:04:34,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 167 states and 232 transitions. [2021-08-27 16:04:34,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:34,285 INFO L681 BuchiCegarLoop]: Abstraction has 167 states and 232 transitions. [2021-08-27 16:04:34,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states and 232 transitions. [2021-08-27 16:04:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-08-27 16:04:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.3892215568862276) internal successors, (232), 166 states have internal predecessors, (232), 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 16:04:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 232 transitions. [2021-08-27 16:04:34,295 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 232 transitions. [2021-08-27 16:04:34,295 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 232 transitions. [2021-08-27 16:04:34,295 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:04:34,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 232 transitions. [2021-08-27 16:04:34,297 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 114 [2021-08-27 16:04:34,297 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:34,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:34,299 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:34,299 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 16:04:34,299 INFO L791 eck$LassoCheckResult]: Stem: 689#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(13);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string46.base, #t~string46.offset, 1);call write~init~int(77, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(101, #t~string46.base, 2 + #t~string46.offset, 1);call write~init~int(116, #t~string46.base, 3 + #t~string46.offset, 1);call write~init~int(104, #t~string46.base, 4 + #t~string46.offset, 1);call write~init~int(58, #t~string46.base, 5 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 6 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string48.base, #t~string48.offset, 1);call write~init~int(82, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(73, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(84, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 4 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(75, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string52.base, #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 1 + #t~string52.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 635#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 636#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; 650#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 651#L634 assume 0 != main_~tmp~3; 653#L608 ~methAndRunningLastTime~0 := 0; 654#L871 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 565#L882-1 [2021-08-27 16:04:34,299 INFO L793 eck$LassoCheckResult]: Loop: 565#L882-1 assume !false; 566#L915 assume test_~splverifierCounter~0 < 4; 681#L916 test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 677#L924 assume !(0 != test_~tmp~9); 611#L924-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 684#L934 assume !(0 != test_~tmp___0~2); 676#L934-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 576#L944 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 578#L952-2 assume !(0 != ~pumpRunning~0); 643#L660 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret55, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 680#L718 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret54, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 637#L692-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~7;havoc isHighWaterSensorDry_~retValue_acc~7; 638#L536-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~7 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~7; 655#L541-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 617#L837-3 assume !(0 != isHighWaterLevel_~tmp~7);isHighWaterLevel_~tmp___0~0 := 1; 618#L837-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 619#L843-1 processEnvironment__wrappee__methaneQuery_#t~ret54 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret54;havoc processEnvironment__wrappee__methaneQuery_#t~ret54; 620#L696-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 574#L667 havoc __utac_acc__Specification2_spec__2_#t~ret75, __utac_acc__Specification2_spec__2_#t~ret76, __utac_acc__Specification2_spec__2_~tmp~8, __utac_acc__Specification2_spec__2_~tmp___0~1;havoc __utac_acc__Specification2_spec__2_~tmp~8;havoc __utac_acc__Specification2_spec__2_~tmp___0~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~5;havoc isMethaneLevelCritical_~retValue_acc~5;isMethaneLevelCritical_~retValue_acc~5 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~5; 729#L496-3 __utac_acc__Specification2_spec__2_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~8 := __utac_acc__Specification2_spec__2_#t~ret75;havoc __utac_acc__Specification2_spec__2_#t~ret75; 727#L882 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~8);~methAndRunningLastTime~0 := 0; 565#L882-1 [2021-08-27 16:04:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:34,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:04:34,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:34,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020873215] [2021-08-27 16:04:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:34,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:34,371 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:34,430 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1739369125, now seen corresponding path program 1 times [2021-08-27 16:04:34,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:34,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515356950] [2021-08-27 16:04:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:34,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:34,469 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 16:04:34,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:34,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515356950] [2021-08-27 16:04:34,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515356950] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:34,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:34,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:04:34,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830425155] [2021-08-27 16:04:34,471 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:34,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:04:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:04:34,472 INFO L87 Difference]: Start difference. First operand 167 states and 232 transitions. cyclomatic complexity: 67 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 16:04:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:34,575 INFO L93 Difference]: Finished difference Result 321 states and 439 transitions. [2021-08-27 16:04:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 16:04:34,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 321 states and 439 transitions. [2021-08-27 16:04:34,580 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 224 [2021-08-27 16:04:34,582 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 321 states to 321 states and 439 transitions. [2021-08-27 16:04:34,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 321 [2021-08-27 16:04:34,582 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 321 [2021-08-27 16:04:34,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 321 states and 439 transitions. [2021-08-27 16:04:34,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:34,585 INFO L681 BuchiCegarLoop]: Abstraction has 321 states and 439 transitions. [2021-08-27 16:04:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states and 439 transitions. [2021-08-27 16:04:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 179. [2021-08-27 16:04:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 179 states have (on average 1.3631284916201116) internal successors, (244), 178 states have internal predecessors, (244), 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 16:04:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 244 transitions. [2021-08-27 16:04:34,607 INFO L704 BuchiCegarLoop]: Abstraction has 179 states and 244 transitions. [2021-08-27 16:04:34,607 INFO L587 BuchiCegarLoop]: Abstraction has 179 states and 244 transitions. [2021-08-27 16:04:34,610 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:04:34,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 179 states and 244 transitions. [2021-08-27 16:04:34,612 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 122 [2021-08-27 16:04:34,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:34,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:34,613 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:34,614 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 16:04:34,614 INFO L791 eck$LassoCheckResult]: Stem: 1194#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(13);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string46.base, #t~string46.offset, 1);call write~init~int(77, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(101, #t~string46.base, 2 + #t~string46.offset, 1);call write~init~int(116, #t~string46.base, 3 + #t~string46.offset, 1);call write~init~int(104, #t~string46.base, 4 + #t~string46.offset, 1);call write~init~int(58, #t~string46.base, 5 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 6 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string48.base, #t~string48.offset, 1);call write~init~int(82, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(73, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(84, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 4 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(75, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string52.base, #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 1 + #t~string52.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 1132#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 1133#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; 1147#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 1148#L634 assume 0 != main_~tmp~3; 1151#L608 ~methAndRunningLastTime~0 := 0; 1152#L871 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1063#L882-1 [2021-08-27 16:04:34,614 INFO L793 eck$LassoCheckResult]: Loop: 1063#L882-1 assume !false; 1064#L915 assume test_~splverifierCounter~0 < 4; 1185#L916 test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 1181#L924 assume !(0 != test_~tmp~9); 1109#L924-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 1188#L934 assume !(0 != test_~tmp___0~2); 1180#L934-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 1074#L944 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1076#L952-2 assume !(0 != ~pumpRunning~0); 1140#L660 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret55, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1184#L718 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret54, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1134#L692-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~7;havoc isHighWaterSensorDry_~retValue_acc~7; 1135#L536-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~7 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~7; 1153#L541-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 1154#L837-3 assume !(0 != isHighWaterLevel_~tmp~7);isHighWaterLevel_~tmp___0~0 := 1; 1116#L837-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1117#L843-1 processEnvironment__wrappee__methaneQuery_#t~ret54 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret54;havoc processEnvironment__wrappee__methaneQuery_#t~ret54; 1118#L696-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 1072#L667 havoc __utac_acc__Specification2_spec__2_#t~ret75, __utac_acc__Specification2_spec__2_#t~ret76, __utac_acc__Specification2_spec__2_~tmp~8, __utac_acc__Specification2_spec__2_~tmp___0~1;havoc __utac_acc__Specification2_spec__2_~tmp~8;havoc __utac_acc__Specification2_spec__2_~tmp___0~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~5;havoc isMethaneLevelCritical_~retValue_acc~5;isMethaneLevelCritical_~retValue_acc~5 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~5; 1067#L496-3 __utac_acc__Specification2_spec__2_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~8 := __utac_acc__Specification2_spec__2_#t~ret75;havoc __utac_acc__Specification2_spec__2_#t~ret75; 1068#L882 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~8);~methAndRunningLastTime~0 := 0; 1063#L882-1 [2021-08-27 16:04:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:04:34,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:34,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597291704] [2021-08-27 16:04:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:34,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:34,652 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:34,688 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:34,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:34,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1059310755, now seen corresponding path program 1 times [2021-08-27 16:04:34,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:34,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218037569] [2021-08-27 16:04:34,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:34,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:34,735 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 16:04:34,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:34,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218037569] [2021-08-27 16:04:34,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218037569] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:34,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:34,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:04:34,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778156719] [2021-08-27 16:04:34,737 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:34,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:04:34,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:04:34,739 INFO L87 Difference]: Start difference. First operand 179 states and 244 transitions. cyclomatic complexity: 67 Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 16:04:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:34,857 INFO L93 Difference]: Finished difference Result 421 states and 571 transitions. [2021-08-27 16:04:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:04:34,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 421 states and 571 transitions. [2021-08-27 16:04:34,860 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 298 [2021-08-27 16:04:34,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 421 states to 421 states and 571 transitions. [2021-08-27 16:04:34,863 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 421 [2021-08-27 16:04:34,863 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 421 [2021-08-27 16:04:34,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 421 states and 571 transitions. [2021-08-27 16:04:34,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:34,864 INFO L681 BuchiCegarLoop]: Abstraction has 421 states and 571 transitions. [2021-08-27 16:04:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states and 571 transitions. [2021-08-27 16:04:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 197. [2021-08-27 16:04:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 196 states have internal predecessors, (262), 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 16:04:34,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 262 transitions. [2021-08-27 16:04:34,870 INFO L704 BuchiCegarLoop]: Abstraction has 197 states and 262 transitions. [2021-08-27 16:04:34,870 INFO L587 BuchiCegarLoop]: Abstraction has 197 states and 262 transitions. [2021-08-27 16:04:34,870 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 16:04:34,871 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 197 states and 262 transitions. [2021-08-27 16:04:34,872 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2021-08-27 16:04:34,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:34,872 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:34,873 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:34,873 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 16:04:34,873 INFO L791 eck$LassoCheckResult]: Stem: 1816#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(13);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string46.base, #t~string46.offset, 1);call write~init~int(77, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(101, #t~string46.base, 2 + #t~string46.offset, 1);call write~init~int(116, #t~string46.base, 3 + #t~string46.offset, 1);call write~init~int(104, #t~string46.base, 4 + #t~string46.offset, 1);call write~init~int(58, #t~string46.base, 5 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 6 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string48.base, #t~string48.offset, 1);call write~init~int(82, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(73, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(84, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 4 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(75, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string52.base, #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 1 + #t~string52.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 1747#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 1748#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; 1763#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 1764#L634 assume 0 != main_~tmp~3; 1768#L608 ~methAndRunningLastTime~0 := 0; 1769#L871 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1677#L882-1 [2021-08-27 16:04:34,873 INFO L793 eck$LassoCheckResult]: Loop: 1677#L882-1 assume !false; 1678#L915 assume test_~splverifierCounter~0 < 4; 1804#L916 test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 1847#L924 assume !(0 != test_~tmp~9); 1845#L924-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 1843#L934 assume !(0 != test_~tmp___0~2); 1841#L934-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 1840#L944 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1755#L952-2 assume !(0 != ~pumpRunning~0); 1756#L660 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret55, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1803#L718 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret54, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1749#L692-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~7;havoc isHighWaterSensorDry_~retValue_acc~7; 1750#L536-1 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~7 := 0;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~7; 1770#L541-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 1771#L837-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~0 := 0; 1729#L837-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 1730#L843-1 processEnvironment__wrappee__methaneQuery_#t~ret54 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret54;havoc processEnvironment__wrappee__methaneQuery_#t~ret54; 1731#L696-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 1686#L667 havoc __utac_acc__Specification2_spec__2_#t~ret75, __utac_acc__Specification2_spec__2_#t~ret76, __utac_acc__Specification2_spec__2_~tmp~8, __utac_acc__Specification2_spec__2_~tmp___0~1;havoc __utac_acc__Specification2_spec__2_~tmp~8;havoc __utac_acc__Specification2_spec__2_~tmp___0~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~5;havoc isMethaneLevelCritical_~retValue_acc~5;isMethaneLevelCritical_~retValue_acc~5 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~5; 1681#L496-3 __utac_acc__Specification2_spec__2_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~8 := __utac_acc__Specification2_spec__2_#t~ret75;havoc __utac_acc__Specification2_spec__2_#t~ret75; 1682#L882 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~8);~methAndRunningLastTime~0 := 0; 1677#L882-1 [2021-08-27 16:04:34,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:34,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 5 times [2021-08-27 16:04:34,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:34,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401649827] [2021-08-27 16:04:34,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:34,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:34,914 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:34,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:34,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:34,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1460649179, now seen corresponding path program 1 times [2021-08-27 16:04:34,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:34,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736999174] [2021-08-27 16:04:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:34,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:34,981 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 16:04:34,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:34,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736999174] [2021-08-27 16:04:34,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736999174] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:34,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:34,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:04:34,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225807905] [2021-08-27 16:04:34,982 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:34,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:34,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 16:04:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 16:04:34,983 INFO L87 Difference]: Start difference. First operand 197 states and 262 transitions. cyclomatic complexity: 67 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 16:04:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:35,059 INFO L93 Difference]: Finished difference Result 321 states and 427 transitions. [2021-08-27 16:04:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 16:04:35,059 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 321 states and 427 transitions. [2021-08-27 16:04:35,062 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 224 [2021-08-27 16:04:35,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 321 states to 321 states and 427 transitions. [2021-08-27 16:04:35,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 321 [2021-08-27 16:04:35,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 321 [2021-08-27 16:04:35,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 321 states and 427 transitions. [2021-08-27 16:04:35,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:35,064 INFO L681 BuchiCegarLoop]: Abstraction has 321 states and 427 transitions. [2021-08-27 16:04:35,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states and 427 transitions. [2021-08-27 16:04:35,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 197. [2021-08-27 16:04:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 197 states have (on average 1.299492385786802) internal successors, (256), 196 states have internal predecessors, (256), 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 16:04:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 256 transitions. [2021-08-27 16:04:35,071 INFO L704 BuchiCegarLoop]: Abstraction has 197 states and 256 transitions. [2021-08-27 16:04:35,071 INFO L587 BuchiCegarLoop]: Abstraction has 197 states and 256 transitions. [2021-08-27 16:04:35,071 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-27 16:04:35,071 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 197 states and 256 transitions. [2021-08-27 16:04:35,072 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 134 [2021-08-27 16:04:35,072 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:35,072 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:35,073 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:35,073 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 16:04:35,073 INFO L791 eck$LassoCheckResult]: Stem: 2337#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~string26.base, #t~string26.offset := #Ultimate.allocOnStack(30);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(9);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(21);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(30);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(9);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(21);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(30);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(9);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(25);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(30);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(9);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(25);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(13);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string46.base, #t~string46.offset, 1);call write~init~int(77, #t~string46.base, 1 + #t~string46.offset, 1);call write~init~int(101, #t~string46.base, 2 + #t~string46.offset, 1);call write~init~int(116, #t~string46.base, 3 + #t~string46.offset, 1);call write~init~int(104, #t~string46.base, 4 + #t~string46.offset, 1);call write~init~int(58, #t~string46.base, 5 + #t~string46.offset, 1);call write~init~int(0, #t~string46.base, 6 + #t~string46.offset, 1);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string48.base, #t~string48.offset, 1);call write~init~int(82, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(73, #t~string48.base, 2 + #t~string48.offset, 1);call write~init~int(84, #t~string48.base, 3 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 4 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(75, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 2 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string52.base, #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 1 + #t~string52.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(13);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(110, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 2 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string63.base, #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(102, #t~string63.base, 2 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 3 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string65.base, #t~string65.offset, 1);call write~init~int(80, #t~string65.base, 1 + #t~string65.offset, 1);call write~init~int(117, #t~string65.base, 2 + #t~string65.offset, 1);call write~init~int(109, #t~string65.base, 3 + #t~string65.offset, 1);call write~init~int(112, #t~string65.base, 4 + #t~string65.offset, 1);call write~init~int(58, #t~string65.base, 5 + #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 6 + #t~string65.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string67.base, #t~string67.offset, 1);call write~init~int(110, #t~string67.base, 1 + #t~string67.offset, 1);call write~init~int(0, #t~string67.base, 2 + #t~string67.offset, 1);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string69.base, #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(102, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 3 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string71.base, #t~string71.offset, 1);call write~init~int(32, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 2 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string73.base, #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 1 + #t~string73.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0; 2274#L-1 havoc main_#res;havoc main_#t~ret53, main_~retValue_acc~8, main_~tmp~3;havoc main_~retValue_acc~8;havoc main_~tmp~3; 2275#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; 2289#L75 main_#t~ret53 := valid_product_#res;main_~tmp~3 := main_#t~ret53;havoc main_#t~ret53; 2290#L634 assume 0 != main_~tmp~3; 2294#L608 ~methAndRunningLastTime~0 := 0; 2295#L871 havoc test_#t~nondet77, test_#t~nondet78, test_#t~nondet79, test_#t~nondet80, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~2, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~2;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2205#L882-1 [2021-08-27 16:04:35,073 INFO L793 eck$LassoCheckResult]: Loop: 2205#L882-1 assume !false; 2206#L915 assume test_~splverifierCounter~0 < 4; 2326#L916 test_~tmp~9 := test_#t~nondet77;havoc test_#t~nondet77; 2322#L924 assume !(0 != test_~tmp~9); 2250#L924-1 test_~tmp___0~2 := test_#t~nondet78;havoc test_#t~nondet78; 2329#L934 assume !(0 != test_~tmp___0~2); 2321#L934-1 test_~tmp___2~0 := test_#t~nondet79;havoc test_#t~nondet79; 2216#L944 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2218#L952-2 assume !(0 != ~pumpRunning~0); 2282#L660 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret55, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 2325#L718 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret54, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 2276#L692-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret74, isHighWaterLevel_~retValue_acc~11, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~0;havoc isHighWaterLevel_~retValue_acc~11;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~0;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~7;havoc isHighWaterSensorDry_~retValue_acc~7; 2277#L536-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~7 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~7; 2297#L541-1 isHighWaterLevel_#t~ret74 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret74;havoc isHighWaterLevel_#t~ret74; 2256#L837-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~0 := 0; 2257#L837-5 isHighWaterLevel_~retValue_acc~11 := isHighWaterLevel_~tmp___0~0;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~11; 2258#L843-1 processEnvironment__wrappee__methaneQuery_#t~ret54 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret54;havoc processEnvironment__wrappee__methaneQuery_#t~ret54; 2259#L696-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 2214#L667 havoc __utac_acc__Specification2_spec__2_#t~ret75, __utac_acc__Specification2_spec__2_#t~ret76, __utac_acc__Specification2_spec__2_~tmp~8, __utac_acc__Specification2_spec__2_~tmp___0~1;havoc __utac_acc__Specification2_spec__2_~tmp~8;havoc __utac_acc__Specification2_spec__2_~tmp___0~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~5;havoc isMethaneLevelCritical_~retValue_acc~5;isMethaneLevelCritical_~retValue_acc~5 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~5; 2211#L496-3 __utac_acc__Specification2_spec__2_#t~ret75 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~8 := __utac_acc__Specification2_spec__2_#t~ret75;havoc __utac_acc__Specification2_spec__2_#t~ret75; 2212#L882 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~8);~methAndRunningLastTime~0 := 0; 2205#L882-1 [2021-08-27 16:04:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:35,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 6 times [2021-08-27 16:04:35,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:35,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850180513] [2021-08-27 16:04:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:35,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:35,096 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:35,141 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:35,142 INFO L82 PathProgramCache]: Analyzing trace with hash 780590809, now seen corresponding path program 1 times [2021-08-27 16:04:35,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:35,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797873463] [2021-08-27 16:04:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:35,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:35,148 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:35,170 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:35,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:35,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1741234861, now seen corresponding path program 1 times [2021-08-27 16:04:35,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:35,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975440827] [2021-08-27 16:04:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:35,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:35,192 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:35,241 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:05:14,237 WARN L207 SmtUtils]: Spent 38.71 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:05:54,788 WARN L207 SmtUtils]: Spent 19.63 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:05:54,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:05:54 BoogieIcfgContainer [2021-08-27 16:05:54,880 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:05:54,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:05:54,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:05:54,881 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:05:54,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:33" (3/4) ... [2021-08-27 16:05:54,883 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:05:54,956 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:05:54,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:05:54,957 INFO L168 Benchmark]: Toolchain (without parser) took 82922.79 ms. Allocated memory was 52.4 MB in the beginning and 153.1 MB in the end (delta: 100.7 MB). Free memory was 28.2 MB in the beginning and 92.1 MB in the end (delta: -63.9 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,957 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:05:54,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.75 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.0 MB in the beginning and 38.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,958 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.41 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 34.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,959 INFO L168 Benchmark]: Boogie Preprocessor took 46.45 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 31.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,959 INFO L168 Benchmark]: RCFGBuilder took 804.93 ms. Allocated memory is still 62.9 MB. Free memory was 31.3 MB in the beginning and 34.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,960 INFO L168 Benchmark]: BuchiAutomizer took 81496.45 ms. Allocated memory was 62.9 MB in the beginning and 153.1 MB in the end (delta: 90.2 MB). Free memory was 34.0 MB in the beginning and 94.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 96.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,960 INFO L168 Benchmark]: Witness Printer took 75.68 ms. Allocated memory is still 153.1 MB. Free memory was 94.1 MB in the beginning and 92.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:54,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.3 MB in the beginning and 34.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.75 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.0 MB in the beginning and 38.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.41 ms. Allocated memory is still 62.9 MB. Free memory was 37.9 MB in the beginning and 34.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.45 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 31.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 804.93 ms. Allocated memory is still 62.9 MB. Free memory was 31.3 MB in the beginning and 34.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81496.45 ms. Allocated memory was 62.9 MB in the beginning and 153.1 MB in the end (delta: 90.2 MB). Free memory was 34.0 MB in the beginning and 94.1 MB in the end (delta: -60.0 MB). Peak memory consumption was 96.7 MB. Max. memory is 16.1 GB. * Witness Printer took 75.68 ms. Allocated memory is still 153.1 MB. Free memory was 94.1 MB in the beginning and 92.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 197 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.4s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 80.7s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 59.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 490 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 197 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 1128 SDtfs, 1383 SDslu, 1204 SDs, 0 SdLazy, 253 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 254.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI5 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 914]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=20339} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=20339, NULL=20356, NULL=20363, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49de91c=0, NULL=0, tmp___1=0, tmp=0, NULL=20352, NULL=0, NULL=20349, NULL=20351, cleanupTimeShifts=4, NULL=0, waterLevel=1, NULL=0, NULL=0, NULL=20355, \result=1, head=0, pumpRunning=0, retValue_acc=1, tmp=1, NULL=0, NULL=0, \result=1, NULL=20359, NULL=0, retValue_acc=0, NULL=0, tmp=1, tmp___0=0, NULL=20346, NULL=20343, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@636f2de5=0, methAndRunningLastTime=0, NULL=20362, NULL=20357, head=0, NULL=0, NULL=0, tmp=0, NULL=20347, NULL=0, NULL=0, NULL=0, tmp=0, NULL=0, NULL=0, NULL=0, NULL=20361, NULL=20350, retValue_acc=0, NULL=20353, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5a895dbd=0, tmp___0=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1967019f=0, NULL=0, NULL=20344, NULL=20348, NULL=20365, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e2d8938=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6ca4bdcc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7bff22ce=0, NULL=0, NULL=0, systemActive=1, NULL=20360, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2365c109=0, \result=0, retValue_acc=0, NULL=0, NULL=0, NULL=20340, \result=0, NULL=20367, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53ffc401=0, NULL=20345, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20932144=0, NULL=20358, NULL=20366, NULL=20341, retValue_acc=1, tmp___2=66, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=20342, NULL=20354, NULL=0, NULL=20364, tmp=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L453] int waterLevel = 1; [L454] int methaneLevelCritical = 0; [L547] int cleanupTimeShifts = 4; [L652] int pumpRunning = 0; [L653] int systemActive = 1; [L865] int methAndRunningLastTime ; [L625] int retValue_acc ; [L626] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L632] tmp = valid_product() [L634] COND TRUE \read(tmp) [L870] methAndRunningLastTime = 0 [L905] int splverifierCounter ; [L906] int tmp ; [L907] int tmp___0 ; [L908] int tmp___1 ; [L909] int tmp___2 ; [L912] splverifierCounter = 0 Loop: [L914] COND TRUE 1 [L916] COND TRUE splverifierCounter < 4 [L922] tmp = __VERIFIER_nondet_int() [L924] COND FALSE !(\read(tmp)) [L932] tmp___0 = __VERIFIER_nondet_int() [L934] COND FALSE !(\read(tmp___0)) [L942] tmp___2 = __VERIFIER_nondet_int() [L944] COND TRUE \read(tmp___2) [L851] systemActive = 1 [L660] COND FALSE !(\read(pumpRunning)) [L667] COND TRUE \read(systemActive) [L715] int tmp ; [L718] COND FALSE !(\read(pumpRunning)) [L689] int tmp ; [L692] COND TRUE ! pumpRunning [L829] int retValue_acc ; [L830] int tmp ; [L831] int tmp___0 ; [L533] int retValue_acc ; [L536] COND TRUE waterLevel < 2 [L537] retValue_acc = 1 [L538] return (retValue_acc); [L835] tmp = isHighWaterSensorDry() [L837] COND TRUE \read(tmp) [L838] tmp___0 = 0 [L842] retValue_acc = tmp___0 [L843] return (retValue_acc); [L694] tmp = isHighWaterLevel() [L696] COND FALSE !(\read(tmp)) [L875] int tmp ; [L876] int tmp___0 ; [L492] int retValue_acc ; [L495] retValue_acc = methaneLevelCritical [L496] return (retValue_acc); [L880] tmp = isMethaneLevelCritical() [L882] COND FALSE !(\read(tmp)) [L898] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:05:55,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...