./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product48.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_spec5_product48.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 b344abba4d30d2c065bb81b7d5c104985c5373df ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:25:27,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:25:27,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:25:27,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:25:27,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:25:27,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:25:27,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:25:27,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:25:27,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:25:27,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:25:27,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:25:27,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:25:27,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:25:27,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:25:27,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:25:27,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:25:27,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:25:27,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:25:27,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:25:27,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:25:27,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:25:27,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:25:27,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:25:27,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:25:27,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:25:27,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:25:27,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:25:27,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:25:27,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:25:27,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:25:27,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:25:27,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:25:27,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:25:27,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:25:27,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:25:27,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:25:27,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:25:27,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:25:27,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:25:27,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:25:27,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:25:27,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:25:27,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:25:27,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:25:27,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:25:27,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:25:27,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:25:27,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:25:27,667 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:25:27,667 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:25:27,667 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:25:27,667 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:25:27,668 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:25:27,668 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:25:27,668 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:25:27,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:25:27,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:25:27,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:25:27,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:25:27,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:25:27,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:25:27,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:25:27,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:25:27,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:25:27,670 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:25:27,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:25:27,670 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:25:27,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:25:27,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:25:27,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:25:27,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:25:27,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:25:27,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:25:27,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:25:27,672 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:25:27,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b344abba4d30d2c065bb81b7d5c104985c5373df [2021-08-27 16:25:27,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:25:28,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:25:28,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:25:28,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:25:28,017 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:25:28,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product48.cil.c [2021-08-27 16:25:28,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86931dc7/d73fdd7487a745a389a110e03289e702/FLAGd3d168973 [2021-08-27 16:25:28,559 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:25:28,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product48.cil.c [2021-08-27 16:25:28,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86931dc7/d73fdd7487a745a389a110e03289e702/FLAGd3d168973 [2021-08-27 16:25:29,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e86931dc7/d73fdd7487a745a389a110e03289e702 [2021-08-27 16:25:29,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:25:29,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:25:29,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:29,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:25:29,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:25:29,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71454de5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29, skipping insertion in model container [2021-08-27 16:25:29,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:25:29,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:25:29,353 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_spec5_product48.cil.c[10968,10981] [2021-08-27 16:25:29,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:29,424 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:25:29,459 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_spec5_product48.cil.c[10968,10981] [2021-08-27 16:25:29,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:25:29,499 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:25:29,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29 WrapperNode [2021-08-27 16:25:29,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:25:29,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:29,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:25:29,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:25:29,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:25:29,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:25:29,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:25:29,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:25:29,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:25:29,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:25:29,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:25:29,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:25:29,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (1/1) ... [2021-08-27 16:25:29,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:25:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:25:29,718 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 16:25:29,738 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 16:25:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:25:29,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:25:29,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:25:29,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:25:30,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:25:30,695 INFO L299 CfgBuilder]: Removed 212 assume(true) statements. [2021-08-27 16:25:30,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:30 BoogieIcfgContainer [2021-08-27 16:25:30,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:25:30,698 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:25:30,698 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:25:30,702 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:25:30,703 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:30,703 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:25:29" (1/3) ... [2021-08-27 16:25:30,704 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@730b49aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:30, skipping insertion in model container [2021-08-27 16:25:30,704 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:30,704 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:25:29" (2/3) ... [2021-08-27 16:25:30,705 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@730b49aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:25:30, skipping insertion in model container [2021-08-27 16:25:30,705 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:25:30,705 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:30" (3/3) ... [2021-08-27 16:25:30,706 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2021-08-27 16:25:30,754 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:25:30,754 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:25:30,755 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:25:30,755 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:25:30,755 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:25:30,755 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:25:30,755 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:25:30,755 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:25:30,779 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 137 states, 136 states have (on average 1.5) internal successors, (204), 136 states have internal predecessors, (204), 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 16:25:30,820 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:25:30,820 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:30,820 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:30,826 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:30,826 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:30,826 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:25:30,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 137 states, 136 states have (on average 1.5) internal successors, (204), 136 states have internal predecessors, (204), 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 16:25:30,834 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 89 [2021-08-27 16:25:30,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:30,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:30,837 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:30,837 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:30,848 INFO L791 eck$LassoCheckResult]: Stem: 123#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0; 39#L-1true havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~9, main_~tmp~8;havoc main_~retValue_acc~9;havoc main_~tmp~8; 102#L990true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 74#L998true main_#t~ret77 := valid_product_#res;main_~tmp~8 := main_#t~ret77;havoc main_#t~ret77; 125#L905true assume 0 != main_~tmp~8; 20#L877true ~switchedOnBeforeTS~0 := 0; 85#L925true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 86#L946-1true [2021-08-27 16:25:30,849 INFO L793 eck$LassoCheckResult]: Loop: 86#L946-1true assume !false; 18#L434true assume test_~splverifierCounter~0 < 4; 103#L435true test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 68#L443true assume !(0 != test_~tmp~3); 109#L443-1true test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 46#L453true assume !(0 != test_~tmp___0~0); 33#L453-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 40#L463true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 113#L471-1true havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 30#L640true __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 76#L935true assume !(0 != ~pumpRunning~0); 17#L512true assume !(0 != ~systemActive~0); 92#L519true havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 129#L799true __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 130#L946true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 86#L946-1true [2021-08-27 16:25:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:30,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:25:30,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:30,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970156439] [2021-08-27 16:25:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:30,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:31,070 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:31,247 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:31,258 INFO L82 PathProgramCache]: Analyzing trace with hash 677504054, now seen corresponding path program 1 times [2021-08-27 16:25:31,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:31,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712449301] [2021-08-27 16:25:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:31,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:31,324 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 16:25:31,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:31,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712449301] [2021-08-27 16:25:31,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712449301] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:31,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:31,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:25:31,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689372893] [2021-08-27 16:25:31,330 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:31,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:31,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:25:31,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:25:31,342 INFO L87 Difference]: Start difference. First operand has 137 states, 136 states have (on average 1.5) internal successors, (204), 136 states have internal predecessors, (204), 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 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 16:25:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:31,401 INFO L93 Difference]: Finished difference Result 267 states and 383 transitions. [2021-08-27 16:25:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:25:31,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 267 states and 383 transitions. [2021-08-27 16:25:31,411 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 174 [2021-08-27 16:25:31,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 267 states to 253 states and 368 transitions. [2021-08-27 16:25:31,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 253 [2021-08-27 16:25:31,426 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 253 [2021-08-27 16:25:31,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 253 states and 368 transitions. [2021-08-27 16:25:31,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:31,430 INFO L681 BuchiCegarLoop]: Abstraction has 253 states and 368 transitions. [2021-08-27 16:25:31,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states and 368 transitions. [2021-08-27 16:25:31,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2021-08-27 16:25:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 251 states have (on average 1.454183266932271) internal successors, (365), 250 states have internal predecessors, (365), 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 16:25:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 365 transitions. [2021-08-27 16:25:31,481 INFO L704 BuchiCegarLoop]: Abstraction has 251 states and 365 transitions. [2021-08-27 16:25:31,482 INFO L587 BuchiCegarLoop]: Abstraction has 251 states and 365 transitions. [2021-08-27 16:25:31,482 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:25:31,482 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 251 states and 365 transitions. [2021-08-27 16:25:31,488 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 172 [2021-08-27 16:25:31,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:31,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:31,489 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:31,490 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:31,490 INFO L791 eck$LassoCheckResult]: Stem: 554#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0; 481#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~9, main_~tmp~8;havoc main_~retValue_acc~9;havoc main_~tmp~8; 482#L990 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 523#L998 main_#t~ret77 := valid_product_#res;main_~tmp~8 := main_#t~ret77;havoc main_#t~ret77; 524#L905 assume 0 != main_~tmp~8; 448#L877 ~switchedOnBeforeTS~0 := 0; 449#L925 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 475#L946-1 [2021-08-27 16:25:31,491 INFO L793 eck$LassoCheckResult]: Loop: 475#L946-1 assume !false; 443#L434 assume test_~splverifierCounter~0 < 4; 444#L435 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 656#L443 assume !(0 != test_~tmp~3); 654#L443-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 653#L453 assume !(0 != test_~tmp___0~0); 651#L453-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 650#L463 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 483#L471-1 havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 648#L640 __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 646#L935 assume !(0 != ~pumpRunning~0); 441#L512 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 442#L570 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret46, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 480#L544-1 assume !(0 == ~pumpRunning~0); 447#L519 havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 537#L799 __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 557#L946 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 475#L946-1 [2021-08-27 16:25:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:31,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:25:31,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:31,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107848590] [2021-08-27 16:25:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:31,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:31,546 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:31,617 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:31,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:31,618 INFO L82 PathProgramCache]: Analyzing trace with hash -538952360, now seen corresponding path program 1 times [2021-08-27 16:25:31,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:31,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111736375] [2021-08-27 16:25:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:31,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:31,638 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 16:25:31,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:31,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111736375] [2021-08-27 16:25:31,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111736375] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:31,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:31,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:25:31,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332281041] [2021-08-27 16:25:31,643 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:31,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:25:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:25:31,645 INFO L87 Difference]: Start difference. First operand 251 states and 365 transitions. cyclomatic complexity: 117 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 16:25:31,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:31,766 INFO L93 Difference]: Finished difference Result 350 states and 487 transitions. [2021-08-27 16:25:31,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:25:31,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 350 states and 487 transitions. [2021-08-27 16:25:31,771 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 247 [2021-08-27 16:25:31,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 350 states to 350 states and 487 transitions. [2021-08-27 16:25:31,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 350 [2021-08-27 16:25:31,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 350 [2021-08-27 16:25:31,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 350 states and 487 transitions. [2021-08-27 16:25:31,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:31,782 INFO L681 BuchiCegarLoop]: Abstraction has 350 states and 487 transitions. [2021-08-27 16:25:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states and 487 transitions. [2021-08-27 16:25:31,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-08-27 16:25:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 350 states have (on average 1.3914285714285715) internal successors, (487), 349 states have internal predecessors, (487), 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 16:25:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 487 transitions. [2021-08-27 16:25:31,802 INFO L704 BuchiCegarLoop]: Abstraction has 350 states and 487 transitions. [2021-08-27 16:25:31,802 INFO L587 BuchiCegarLoop]: Abstraction has 350 states and 487 transitions. [2021-08-27 16:25:31,802 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:25:31,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 350 states and 487 transitions. [2021-08-27 16:25:31,804 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 247 [2021-08-27 16:25:31,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:31,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:31,806 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:31,806 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:31,807 INFO L791 eck$LassoCheckResult]: Stem: 1176#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0; 1090#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~9, main_~tmp~8;havoc main_~retValue_acc~9;havoc main_~tmp~8; 1091#L990 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 1135#L998 main_#t~ret77 := valid_product_#res;main_~tmp~8 := main_#t~ret77;havoc main_#t~ret77; 1136#L905 assume 0 != main_~tmp~8; 1058#L877 ~switchedOnBeforeTS~0 := 0; 1059#L925 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1146#L946-1 [2021-08-27 16:25:31,807 INFO L793 eck$LassoCheckResult]: Loop: 1146#L946-1 assume !false; 1052#L434 assume test_~splverifierCounter~0 < 4; 1053#L435 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 1130#L443 assume !(0 != test_~tmp~3); 1087#L443-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 1101#L453 assume !(0 != test_~tmp___0~0); 1030#L453-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 1081#L463 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1064#L471-1 havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 1168#L640 __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 1250#L935 assume !(0 != ~pumpRunning~0); 1249#L512 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1248#L570 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret46, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1247#L544-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret66, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1246#L807-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1245#L812-1 isHighWaterLevel_#t~ret66 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret66;havoc isHighWaterLevel_#t~ret66; 1020#L689-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 1021#L689-5 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 1137#L695-1 processEnvironment__wrappee__methaneQuery_#t~ret46 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret46;havoc processEnvironment__wrappee__methaneQuery_#t~ret46; 1166#L548-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 1057#L519 havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 1152#L799 __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 1178#L946 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~9); 1146#L946-1 [2021-08-27 16:25:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:31,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:25:31,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:31,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676182509] [2021-08-27 16:25:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:31,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:31,874 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:31,939 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:31,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:31,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2055068228, now seen corresponding path program 1 times [2021-08-27 16:25:31,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:31,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247403916] [2021-08-27 16:25:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:31,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:25:31,978 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 16:25:31,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:25:31,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247403916] [2021-08-27 16:25:31,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247403916] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:25:31,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:25:31,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 16:25:31,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820552155] [2021-08-27 16:25:31,980 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:25:31,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:25:31,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:25:31,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:25:31,981 INFO L87 Difference]: Start difference. First operand 350 states and 487 transitions. cyclomatic complexity: 140 Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 16:25:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:25:32,144 INFO L93 Difference]: Finished difference Result 982 states and 1337 transitions. [2021-08-27 16:25:32,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:25:32,144 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 982 states and 1337 transitions. [2021-08-27 16:25:32,152 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 647 [2021-08-27 16:25:32,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 982 states to 982 states and 1337 transitions. [2021-08-27 16:25:32,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 982 [2021-08-27 16:25:32,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 982 [2021-08-27 16:25:32,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 982 states and 1337 transitions. [2021-08-27 16:25:32,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:25:32,162 INFO L681 BuchiCegarLoop]: Abstraction has 982 states and 1337 transitions. [2021-08-27 16:25:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states and 1337 transitions. [2021-08-27 16:25:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 693. [2021-08-27 16:25:32,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 693 states have (on average 1.354978354978355) internal successors, (939), 692 states have internal predecessors, (939), 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 16:25:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 939 transitions. [2021-08-27 16:25:32,178 INFO L704 BuchiCegarLoop]: Abstraction has 693 states and 939 transitions. [2021-08-27 16:25:32,178 INFO L587 BuchiCegarLoop]: Abstraction has 693 states and 939 transitions. [2021-08-27 16:25:32,178 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:25:32,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 693 states and 939 transitions. [2021-08-27 16:25:32,182 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 494 [2021-08-27 16:25:32,182 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:25:32,182 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:25:32,184 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:32,184 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:25:32,184 INFO L791 eck$LassoCheckResult]: Stem: 2523#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(13);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string70.base, #t~string70.offset, 1);call write~init~int(77, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(101, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(116, #t~string70.base, 3 + #t~string70.offset, 1);call write~init~int(104, #t~string70.base, 4 + #t~string70.offset, 1);call write~init~int(58, #t~string70.base, 5 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 6 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string72.base, #t~string72.offset, 1);call write~init~int(82, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(73, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(84, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 4 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(75, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string76.base, #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 1 + #t~string76.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~switchedOnBeforeTS~0 := 0; 2443#L-1 havoc main_#res;havoc main_#t~ret77, main_~retValue_acc~9, main_~tmp~8;havoc main_~retValue_acc~9;havoc main_~tmp~8; 2444#L990 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 2489#L998 main_#t~ret77 := valid_product_#res;main_~tmp~8 := main_#t~ret77;havoc main_#t~ret77; 2490#L905 assume 0 != main_~tmp~8; 2405#L877 ~switchedOnBeforeTS~0 := 0; 2406#L925 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2436#L946-1 [2021-08-27 16:25:32,184 INFO L793 eck$LassoCheckResult]: Loop: 2436#L946-1 assume !false; 2402#L434 assume test_~splverifierCounter~0 < 4; 2403#L435 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 2484#L443 assume !(0 != test_~tmp~3); 2485#L443-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 2450#L453 assume !(0 != test_~tmp___0~0); 2381#L453-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 2434#L463 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2413#L471-1 havoc __utac_acc__Specification5_spec__2_#t~ret78;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 2426#L640 __utac_acc__Specification5_spec__2_#t~ret78 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret78;havoc __utac_acc__Specification5_spec__2_#t~ret78; 2427#L935 assume !(0 != ~pumpRunning~0); 2397#L512 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret47, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 2398#L570 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret46, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 2441#L544-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret66, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 2473#L807-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 2474#L812-1 isHighWaterLevel_#t~ret66 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret66;havoc isHighWaterLevel_#t~ret66; 2370#L689-3 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~1 := 0; 2371#L689-5 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 2491#L695-1 processEnvironment__wrappee__methaneQuery_#t~ret46 := isHighWaterLevel_#res;processEnvironment__wrappee__methaneQuery_~tmp~4 := processEnvironment__wrappee__methaneQuery_#t~ret46;havoc processEnvironment__wrappee__methaneQuery_#t~ret46; 2516#L548-1 assume !(0 != processEnvironment__wrappee__methaneQuery_~tmp~4); 2401#L519 havoc __utac_acc__Specification5_spec__3_#t~ret79, __utac_acc__Specification5_spec__3_#t~ret80, __utac_acc__Specification5_spec__3_~tmp~9, __utac_acc__Specification5_spec__3_~tmp___0~2;havoc __utac_acc__Specification5_spec__3_~tmp~9;havoc __utac_acc__Specification5_spec__3_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 2507#L799 __utac_acc__Specification5_spec__3_#t~ret79 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~9 := __utac_acc__Specification5_spec__3_#t~ret79;havoc __utac_acc__Specification5_spec__3_#t~ret79; 2526#L946 assume 2 != __utac_acc__Specification5_spec__3_~tmp~9;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~4;havoc isPumpRunning_~retValue_acc~4;isPumpRunning_~retValue_acc~4 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~4; 2527#L640-1 __utac_acc__Specification5_spec__3_#t~ret80 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~2 := __utac_acc__Specification5_spec__3_#t~ret80;havoc __utac_acc__Specification5_spec__3_#t~ret80; 2446#L950 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~2); 2436#L946-1 [2021-08-27 16:25:32,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:32,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-08-27 16:25:32,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:32,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946336936] [2021-08-27 16:25:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:32,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:32,217 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:32,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:32,256 INFO L82 PathProgramCache]: Analyzing trace with hash -764400417, now seen corresponding path program 1 times [2021-08-27 16:25:32,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:32,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869663117] [2021-08-27 16:25:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:32,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:32,261 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:32,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:25:32,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:25:32,268 INFO L82 PathProgramCache]: Analyzing trace with hash -827826599, now seen corresponding path program 1 times [2021-08-27 16:25:32,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:25:32,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625990855] [2021-08-27 16:25:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:25:32,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:25:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:32,296 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:25:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:25:32,341 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:26:17,014 WARN L207 SmtUtils]: Spent 44.33 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:27:03,141 WARN L207 SmtUtils]: Spent 22.25 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:27:03,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:27:03 BoogieIcfgContainer [2021-08-27 16:27:03,290 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:27:03,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:27:03,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:27:03,291 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:27:03,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:25:30" (3/4) ... [2021-08-27 16:27:03,298 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:27:03,338 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:27:03,339 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:27:03,340 INFO L168 Benchmark]: Toolchain (without parser) took 94254.22 ms. Allocated memory was 56.6 MB in the beginning and 125.8 MB in the end (delta: 69.2 MB). Free memory was 35.0 MB in the beginning and 74.2 MB in the end (delta: -39.2 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:03,340 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 43.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:27:03,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.96 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.8 MB in the beginning and 45.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:03,341 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.82 ms. Allocated memory is still 69.2 MB. Free memory was 45.1 MB in the beginning and 41.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:03,341 INFO L168 Benchmark]: Boogie Preprocessor took 81.90 ms. Allocated memory is still 69.2 MB. Free memory was 41.0 MB in the beginning and 38.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:03,342 INFO L168 Benchmark]: RCFGBuilder took 1016.18 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 38.1 MB in the beginning and 59.9 MB in the end (delta: -21.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:03,342 INFO L168 Benchmark]: BuchiAutomizer took 92592.15 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 59.4 MB in the beginning and 77.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 82.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:03,343 INFO L168 Benchmark]: Witness Printer took 47.93 ms. Allocated memory is still 125.8 MB. Free memory was 77.3 MB in the beginning and 74.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:27:03,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 43.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.96 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.8 MB in the beginning and 45.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.82 ms. Allocated memory is still 69.2 MB. Free memory was 45.1 MB in the beginning and 41.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.90 ms. Allocated memory is still 69.2 MB. Free memory was 41.0 MB in the beginning and 38.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1016.18 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 38.1 MB in the beginning and 59.9 MB in the end (delta: -21.8 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 92592.15 ms. Allocated memory was 83.9 MB in the beginning and 125.8 MB in the end (delta: 41.9 MB). Free memory was 59.4 MB in the beginning and 77.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 82.4 MB. Max. memory is 16.1 GB. * Witness Printer took 47.93 ms. Allocated memory is still 125.8 MB. Free memory was 77.3 MB in the beginning and 74.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 693 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 92.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 91.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 75.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 291 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 693 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 645 SDtfs, 961 SDslu, 855 SDs, 0 SdLazy, 130 SolverSat, 63 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 178.7ms Time LassoAnalysisResults: nont1 unkn0 SFLI3 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: 433]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=23820} State at position 1 is {NULL=0, NULL=49344, NULL=0, NULL=23820, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5dd352c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d66b426=70, methaneLevelCritical=0, retValue_acc=1, retValue_acc=0, tmp=0, NULL=0, NULL=49329, tmp___1=0, NULL=49333, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d22941f=0, NULL=49346, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@15d1ba3b=0, NULL=49350, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bb2e076=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27ee088c=0, NULL=0, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c618f88=0, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=49331, NULL=23821, NULL=0, NULL=0, NULL=0, tmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@993a215=0, NULL=0, \result=1, NULL=23823, NULL=0, NULL=0, NULL=0, tmp=1, retValue_acc=1, NULL=49338, NULL=49349, NULL=49336, NULL=49332, head=0, NULL=0, NULL=0, tmp=0, NULL=49334, NULL=0, NULL=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4517ec05=0, NULL=0, NULL=49343, NULL=49347, retValue_acc=0, NULL=23822, NULL=49339, tmp=1, tmp___0=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e232198=0, NULL=0, NULL=49340, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2df0b235=0, NULL=49345, switchedOnBeforeTS=0, NULL=49335, \result=0, NULL=49342, NULL=0, NULL=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=49352, tmp___0=0, \result=0, NULL=0, NULL=49341, NULL=49348, tmp___2=70, splverifierCounter=0, NULL=0, NULL=0, NULL=49351, NULL=49328, NULL=49330, NULL=49337, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L500] int pumpRunning = 0; [L501] int systemActive = 1; [L724] int waterLevel = 1; [L725] int methaneLevelCritical = 0; [L818] int cleanupTimeShifts = 4; [L919] int switchedOnBeforeTS ; [L896] int retValue_acc ; [L897] int tmp ; [L994] int retValue_acc ; [L997] retValue_acc = 1 [L998] return (retValue_acc); [L903] tmp = valid_product() [L905] COND TRUE \read(tmp) [L924] switchedOnBeforeTS = 0 [L424] int splverifierCounter ; [L425] int tmp ; [L426] int tmp___0 ; [L427] int tmp___1 ; [L428] int tmp___2 ; [L431] splverifierCounter = 0 Loop: [L433] COND TRUE 1 [L435] COND TRUE splverifierCounter < 4 [L441] tmp = __VERIFIER_nondet_int() [L443] COND FALSE !(\read(tmp)) [L451] tmp___0 = __VERIFIER_nondet_int() [L453] COND FALSE !(\read(tmp___0)) [L461] tmp___2 = __VERIFIER_nondet_int() [L463] COND TRUE \read(tmp___2) [L718] systemActive = 1 [L636] int retValue_acc ; [L639] retValue_acc = pumpRunning [L640] return (retValue_acc); [L933] switchedOnBeforeTS = isPumpRunning() [L512] COND FALSE !(\read(pumpRunning)) [L519] COND TRUE \read(systemActive) [L567] int tmp ; [L570] COND FALSE !(\read(pumpRunning)) [L541] int tmp ; [L544] COND TRUE ! pumpRunning [L681] int retValue_acc ; [L682] int tmp ; [L683] int tmp___0 ; [L804] int retValue_acc ; [L807] COND TRUE waterLevel < 2 [L808] retValue_acc = 1 [L809] return (retValue_acc); [L687] tmp = isHighWaterSensorDry() [L689] COND TRUE \read(tmp) [L690] tmp___0 = 0 [L694] retValue_acc = tmp___0 [L695] return (retValue_acc); [L546] tmp = isHighWaterLevel() [L548] COND FALSE !(\read(tmp)) [L939] int tmp ; [L940] int tmp___0 ; [L795] int retValue_acc ; [L798] retValue_acc = waterLevel [L799] return (retValue_acc); [L944] tmp = getWaterLevel() [L946] COND TRUE tmp != 2 [L636] int retValue_acc ; [L639] retValue_acc = pumpRunning [L640] return (retValue_acc); [L948] tmp___0 = isPumpRunning() [L950] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:27:03,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...