./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_productSimulator.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_productSimulator.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 0d8bfdcffbfa2f8ea1896cdcb99e5a5238344d77 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:27:05,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:27:05,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:27:05,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:27:05,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:27:05,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:27:05,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:27:05,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:27:05,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:27:05,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:27:05,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:27:05,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:27:05,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:27:05,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:27:05,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:27:05,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:27:05,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:27:05,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:27:05,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:27:05,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:27:05,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:27:05,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:27:05,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:27:05,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:27:05,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:27:05,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:27:05,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:27:05,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:27:05,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:27:05,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:27:05,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:27:05,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:27:05,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:27:05,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:27:05,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:27:05,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:27:05,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:27:05,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:27:05,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:27:05,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:27:05,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:27:05,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:27:05,716 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:27:05,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:27:05,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:27:05,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:27:05,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:27:05,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:27:05,719 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:27:05,719 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:27:05,720 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:27:05,720 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:27:05,720 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:27:05,721 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:27:05,721 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:27:05,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:27:05,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:27:05,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:27:05,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:27:05,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:27:05,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:27:05,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:27:05,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:27:05,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:27:05,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:27:05,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:27:05,729 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:27:05,729 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:27:05,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:27:05,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:27:05,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:27:05,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:27:05,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:27:05,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:27:05,732 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:27:05,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8bfdcffbfa2f8ea1896cdcb99e5a5238344d77 [2021-08-27 16:27:06,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:27:06,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:27:06,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:27:06,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:27:06,074 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:27:06,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_productSimulator.cil.c [2021-08-27 16:27:06,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74b6b5f1/da9bd4260d8d479e95572e2c5a2fec5c/FLAG7fa040c69 [2021-08-27 16:27:06,616 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:27:06,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_productSimulator.cil.c [2021-08-27 16:27:06,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74b6b5f1/da9bd4260d8d479e95572e2c5a2fec5c/FLAG7fa040c69 [2021-08-27 16:27:07,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74b6b5f1/da9bd4260d8d479e95572e2c5a2fec5c [2021-08-27 16:27:07,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:27:07,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:27:07,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:27:07,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:27:07,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:27:07,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6fe9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07, skipping insertion in model container [2021-08-27 16:27:07,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:27:07,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:27:07,386 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_productSimulator.cil.c[5400,5413] [2021-08-27 16:27:07,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:27:07,517 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:27:07,538 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_productSimulator.cil.c[5400,5413] [2021-08-27 16:27:07,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:27:07,587 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:27:07,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07 WrapperNode [2021-08-27 16:27:07,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:27:07,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:27:07,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:27:07,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:27:07,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:27:07,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:27:07,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:27:07,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:27:07,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:27:07,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:27:07,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:27:07,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:27:07,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (1/1) ... [2021-08-27 16:27:07,820 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:27:07,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:27:07,846 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 16:27:07,875 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 16:27:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:27:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:27:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:27:07,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:27:09,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:27:09,721 INFO L299 CfgBuilder]: Removed 914 assume(true) statements. [2021-08-27 16:27:09,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:27:09 BoogieIcfgContainer [2021-08-27 16:27:09,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:27:09,724 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:27:09,724 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:27:09,727 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:27:09,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:27:09,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:27:07" (1/3) ... [2021-08-27 16:27:09,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27e717dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:27:09, skipping insertion in model container [2021-08-27 16:27:09,729 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:27:09,729 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:27:07" (2/3) ... [2021-08-27 16:27:09,729 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27e717dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:27:09, skipping insertion in model container [2021-08-27 16:27:09,729 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:27:09,729 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:27:09" (3/3) ... [2021-08-27 16:27:09,730 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_productSimulator.cil.c [2021-08-27 16:27:09,762 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:27:09,762 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:27:09,762 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:27:09,762 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:27:09,762 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:27:09,762 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:27:09,762 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:27:09,762 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:27:09,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 476 states, 475 states have (on average 1.5642105263157895) internal successors, (743), 475 states have internal predecessors, (743), 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 16:27:09,831 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 311 [2021-08-27 16:27:09,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:27:09,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:27:09,839 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:09,840 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:09,840 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:27:09,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 476 states, 475 states have (on average 1.5642105263157895) internal successors, (743), 475 states have internal predecessors, (743), 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 16:27:09,861 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 311 [2021-08-27 16:27:09,864 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:27:09,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:27:09,868 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:09,869 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:09,878 INFO L791 eck$LassoCheckResult]: Stem: 453#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(38);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(80, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(117, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(109, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(112, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(110, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 2 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 3 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(32, #t~string82.base, 1 + #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 2 + #t~string82.offset, 1);call #t~string84.base, #t~string84.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string84.base, #t~string84.offset, 1);call write~init~int(0, #t~string84.base, 1 + #t~string84.offset, 1);~__SELECTED_FEATURE_base~0 := 0;~__SELECTED_FEATURE_highWaterSensor~0 := 0;~__SELECTED_FEATURE_lowWaterSensor~0 := 0;~__SELECTED_FEATURE_methaneQuery~0 := 0;~__SELECTED_FEATURE_methaneAlarm~0 := 0;~__SELECTED_FEATURE_stopCommand~0 := 0;~__SELECTED_FEATURE_startCommand~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 397#L-1true havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0;~__GUIDSL_ROOT_PRODUCTION~0 := 1; 24#L297true havoc select_features_#t~ret19, select_features_#t~ret20, select_features_#t~ret21, select_features_#t~ret22, select_features_#t~ret23, select_features_#t~ret24;~__SELECTED_FEATURE_base~0 := 1;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 33#L272true select_features_#t~ret19 := select_one_#res;~__SELECTED_FEATURE_highWaterSensor~0 := select_features_#t~ret19;havoc select_features_#t~ret19;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 354#L272-1true select_features_#t~ret20 := select_one_#res;~__SELECTED_FEATURE_lowWaterSensor~0 := select_features_#t~ret20;havoc select_features_#t~ret20;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 14#L272-2true select_features_#t~ret21 := select_one_#res;~__SELECTED_FEATURE_methaneQuery~0 := select_features_#t~ret21;havoc select_features_#t~ret21;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 364#L272-3true select_features_#t~ret22 := select_one_#res;~__SELECTED_FEATURE_methaneAlarm~0 := select_features_#t~ret22;havoc select_features_#t~ret22;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 305#L272-4true select_features_#t~ret23 := select_one_#res;~__SELECTED_FEATURE_stopCommand~0 := select_features_#t~ret23;havoc select_features_#t~ret23;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 473#L272-5true select_features_#t~ret24 := select_one_#res;~__SELECTED_FEATURE_startCommand~0 := select_features_#t~ret24;havoc select_features_#t~ret24; 396#L289true havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := ~__SELECTED_FEATURE_base~0;valid_product_#res := valid_product_~retValue_acc~6; 165#L305true main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 424#L251true assume 0 != main_~tmp~0; 72#L222true ~switchedOnBeforeTS~0 := 0; 319#L1109true havoc test_#t~nondet60, test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 384#L1130-1true [2021-08-27 16:27:09,879 INFO L793 eck$LassoCheckResult]: Loop: 384#L1130-1true assume !false; 435#L698true assume test_~splverifierCounter~0 < 4; 149#L699true test_~tmp~4 := test_#t~nondet60;havoc test_#t~nondet60; 420#L707true assume !(0 != test_~tmp~4); 291#L707-1true test_~tmp___0~0 := test_#t~nondet61;havoc test_#t~nondet61; 15#L717true assume !(0 != test_~tmp___0~0); 277#L717-1true test_~tmp___2~0 := test_#t~nondet62;havoc test_#t~nondet62; 372#L727true assume 0 != test_~tmp___2~0; 57#L728true assume !(0 != ~__SELECTED_FEATURE_startCommand~0); 333#L739-1true havoc __utac_acc__Specification5_spec__2_#t~ret87;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 25#L1001true __utac_acc__Specification5_spec__2_#t~ret87 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret87;havoc __utac_acc__Specification5_spec__2_#t~ret87; 189#L1119true assume !(0 != ~pumpRunning~0); 358#L779true assume !(0 != ~systemActive~0); 11#L786true havoc __utac_acc__Specification5_spec__3_#t~ret88, __utac_acc__Specification5_spec__3_#t~ret89, __utac_acc__Specification5_spec__3_~tmp~11, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~11;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 202#L133true __utac_acc__Specification5_spec__3_#t~ret88 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~11 := __utac_acc__Specification5_spec__3_#t~ret88;havoc __utac_acc__Specification5_spec__3_#t~ret88; 5#L1130true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~11); 384#L1130-1true [2021-08-27 16:27:09,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:09,888 INFO L82 PathProgramCache]: Analyzing trace with hash 527832624, now seen corresponding path program 1 times [2021-08-27 16:27:09,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:09,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039717524] [2021-08-27 16:27:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:09,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:10,142 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:10,275 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:10,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:10,281 INFO L82 PathProgramCache]: Analyzing trace with hash 832980286, now seen corresponding path program 1 times [2021-08-27 16:27:10,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:10,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116445516] [2021-08-27 16:27:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:10,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:10,292 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:10,309 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:10,313 INFO L82 PathProgramCache]: Analyzing trace with hash 224402797, now seen corresponding path program 1 times [2021-08-27 16:27:10,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:10,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808811367] [2021-08-27 16:27:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:10,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:27:10,492 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 16:27:10,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:27:10,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808811367] [2021-08-27 16:27:10,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808811367] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:27:10,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:27:10,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-27 16:27:10,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282667050] [2021-08-27 16:27:10,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:27:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 16:27:10,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-27 16:27:10,734 INFO L87 Difference]: Start difference. First operand has 476 states, 475 states have (on average 1.5642105263157895) internal successors, (743), 475 states have internal predecessors, (743), 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 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 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 16:27:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:27:11,142 INFO L93 Difference]: Finished difference Result 1460 states and 2253 transitions. [2021-08-27 16:27:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 16:27:11,144 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1460 states and 2253 transitions. [2021-08-27 16:27:11,155 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 966 [2021-08-27 16:27:11,174 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1460 states to 1432 states and 2225 transitions. [2021-08-27 16:27:11,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1432 [2021-08-27 16:27:11,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1432 [2021-08-27 16:27:11,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1432 states and 2225 transitions. [2021-08-27 16:27:11,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:27:11,183 INFO L681 BuchiCegarLoop]: Abstraction has 1432 states and 2225 transitions. [2021-08-27 16:27:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states and 2225 transitions. [2021-08-27 16:27:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 520. [2021-08-27 16:27:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 520 states have (on average 1.5384615384615385) internal successors, (800), 519 states have internal predecessors, (800), 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 16:27:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 800 transitions. [2021-08-27 16:27:11,232 INFO L704 BuchiCegarLoop]: Abstraction has 520 states and 800 transitions. [2021-08-27 16:27:11,232 INFO L587 BuchiCegarLoop]: Abstraction has 520 states and 800 transitions. [2021-08-27 16:27:11,233 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:27:11,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 520 states and 800 transitions. [2021-08-27 16:27:11,235 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 348 [2021-08-27 16:27:11,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:27:11,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:27:11,236 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:11,236 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] [2021-08-27 16:27:11,237 INFO L791 eck$LassoCheckResult]: Stem: 2426#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(38);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(80, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(117, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(109, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(112, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(110, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 2 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 3 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(32, #t~string82.base, 1 + #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 2 + #t~string82.offset, 1);call #t~string84.base, #t~string84.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string84.base, #t~string84.offset, 1);call write~init~int(0, #t~string84.base, 1 + #t~string84.offset, 1);~__SELECTED_FEATURE_base~0 := 0;~__SELECTED_FEATURE_highWaterSensor~0 := 0;~__SELECTED_FEATURE_lowWaterSensor~0 := 0;~__SELECTED_FEATURE_methaneQuery~0 := 0;~__SELECTED_FEATURE_methaneAlarm~0 := 0;~__SELECTED_FEATURE_stopCommand~0 := 0;~__SELECTED_FEATURE_startCommand~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 2411#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0;~__GUIDSL_ROOT_PRODUCTION~0 := 1; 2000#L297 havoc select_features_#t~ret19, select_features_#t~ret20, select_features_#t~ret21, select_features_#t~ret22, select_features_#t~ret23, select_features_#t~ret24;~__SELECTED_FEATURE_base~0 := 1;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2001#L272 select_features_#t~ret19 := select_one_#res;~__SELECTED_FEATURE_highWaterSensor~0 := select_features_#t~ret19;havoc select_features_#t~ret19;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2018#L272-1 select_features_#t~ret20 := select_one_#res;~__SELECTED_FEATURE_lowWaterSensor~0 := select_features_#t~ret20;havoc select_features_#t~ret20;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 1980#L272-2 select_features_#t~ret21 := select_one_#res;~__SELECTED_FEATURE_methaneQuery~0 := select_features_#t~ret21;havoc select_features_#t~ret21;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 1981#L272-3 select_features_#t~ret22 := select_one_#res;~__SELECTED_FEATURE_methaneAlarm~0 := select_features_#t~ret22;havoc select_features_#t~ret22;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2355#L272-4 select_features_#t~ret23 := select_one_#res;~__SELECTED_FEATURE_stopCommand~0 := select_features_#t~ret23;havoc select_features_#t~ret23;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 2356#L272-5 select_features_#t~ret24 := select_one_#res;~__SELECTED_FEATURE_startCommand~0 := select_features_#t~ret24;havoc select_features_#t~ret24; 2410#L289 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := ~__SELECTED_FEATURE_base~0;valid_product_#res := valid_product_~retValue_acc~6; 2222#L305 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 2223#L251 assume 0 != main_~tmp~0; 2087#L222 ~switchedOnBeforeTS~0 := 0; 2088#L1109 havoc test_#t~nondet60, test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1963#L1130-1 [2021-08-27 16:27:11,237 INFO L793 eck$LassoCheckResult]: Loop: 1963#L1130-1 assume !false; 2401#L698 assume test_~splverifierCounter~0 < 4; 2205#L699 test_~tmp~4 := test_#t~nondet60;havoc test_#t~nondet60; 2206#L707 assume !(0 != test_~tmp~4); 2342#L707-1 test_~tmp___0~0 := test_#t~nondet61;havoc test_#t~nondet61; 1982#L717 assume !(0 != test_~tmp___0~0); 1983#L717-1 test_~tmp___2~0 := test_#t~nondet62;havoc test_#t~nondet62; 2329#L727 assume !(0 != test_~tmp___2~0);test_~tmp___1~0 := test_#t~nondet63;havoc test_#t~nondet63; 2291#L739 assume !(0 != test_~tmp___1~0); 2061#L739-1 havoc __utac_acc__Specification5_spec__2_#t~ret87;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 2002#L1001 __utac_acc__Specification5_spec__2_#t~ret87 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret87;havoc __utac_acc__Specification5_spec__2_#t~ret87; 2003#L1119 assume !(0 != ~pumpRunning~0); 2165#L779 assume 0 != ~systemActive~0; 2388#L922 assume !(0 != ~__SELECTED_FEATURE_methaneAlarm~0); 2121#L879-2 assume !(0 != ~__SELECTED_FEATURE_lowWaterSensor~0); 2122#L836-8 assume !(0 != ~__SELECTED_FEATURE_highWaterSensor~0); 1974#L786 havoc __utac_acc__Specification5_spec__3_#t~ret88, __utac_acc__Specification5_spec__3_#t~ret89, __utac_acc__Specification5_spec__3_~tmp~11, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~11;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 1975#L133 __utac_acc__Specification5_spec__3_#t~ret88 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~11 := __utac_acc__Specification5_spec__3_#t~ret88;havoc __utac_acc__Specification5_spec__3_#t~ret88; 1961#L1130 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~11); 1963#L1130-1 [2021-08-27 16:27:11,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:11,238 INFO L82 PathProgramCache]: Analyzing trace with hash 527832624, now seen corresponding path program 2 times [2021-08-27 16:27:11,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:11,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882121185] [2021-08-27 16:27:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:11,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:11,270 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:11,321 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:11,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:11,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1823094131, now seen corresponding path program 1 times [2021-08-27 16:27:11,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:11,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709614490] [2021-08-27 16:27:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:11,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:11,326 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:11,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:11,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:11,331 INFO L82 PathProgramCache]: Analyzing trace with hash 748075748, now seen corresponding path program 1 times [2021-08-27 16:27:11,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:11,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816130243] [2021-08-27 16:27:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:11,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:27:11,384 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 16:27:11,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:27:11,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816130243] [2021-08-27 16:27:11,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816130243] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:27:11,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:27:11,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:27:11,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88208049] [2021-08-27 16:27:11,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:27:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:27:11,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:27:11,597 INFO L87 Difference]: Start difference. First operand 520 states and 800 transitions. cyclomatic complexity: 283 Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 16:27:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:27:12,018 INFO L93 Difference]: Finished difference Result 1767 states and 2691 transitions. [2021-08-27 16:27:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:27:12,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1767 states and 2691 transitions. [2021-08-27 16:27:12,031 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 690 [2021-08-27 16:27:12,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1767 states to 1767 states and 2691 transitions. [2021-08-27 16:27:12,046 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1767 [2021-08-27 16:27:12,048 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1767 [2021-08-27 16:27:12,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1767 states and 2691 transitions. [2021-08-27 16:27:12,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:27:12,051 INFO L681 BuchiCegarLoop]: Abstraction has 1767 states and 2691 transitions. [2021-08-27 16:27:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states and 2691 transitions. [2021-08-27 16:27:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1026. [2021-08-27 16:27:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1026 states have (on average 1.5058479532163742) internal successors, (1545), 1025 states have internal predecessors, (1545), 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 16:27:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1545 transitions. [2021-08-27 16:27:12,084 INFO L704 BuchiCegarLoop]: Abstraction has 1026 states and 1545 transitions. [2021-08-27 16:27:12,084 INFO L587 BuchiCegarLoop]: Abstraction has 1026 states and 1545 transitions. [2021-08-27 16:27:12,085 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:27:12,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1026 states and 1545 transitions. [2021-08-27 16:27:12,089 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 690 [2021-08-27 16:27:12,090 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:27:12,090 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:27:12,091 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:12,091 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:27:12,092 INFO L791 eck$LassoCheckResult]: Stem: 4790#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(38);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string8.base, #t~string8.offset := #Ultimate.allocOnStack(13);call #t~string10.base, #t~string10.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string10.base, #t~string10.offset, 1);call write~init~int(77, #t~string10.base, 1 + #t~string10.offset, 1);call write~init~int(101, #t~string10.base, 2 + #t~string10.offset, 1);call write~init~int(116, #t~string10.base, 3 + #t~string10.offset, 1);call write~init~int(104, #t~string10.base, 4 + #t~string10.offset, 1);call write~init~int(58, #t~string10.base, 5 + #t~string10.offset, 1);call write~init~int(0, #t~string10.base, 6 + #t~string10.offset, 1);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string12.base, #t~string12.offset, 1);call write~init~int(82, #t~string12.base, 1 + #t~string12.offset, 1);call write~init~int(73, #t~string12.base, 2 + #t~string12.offset, 1);call write~init~int(84, #t~string12.base, 3 + #t~string12.offset, 1);call write~init~int(0, #t~string12.base, 4 + #t~string12.offset, 1);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string14.base, #t~string14.offset, 1);call write~init~int(75, #t~string14.base, 1 + #t~string14.offset, 1);call write~init~int(0, #t~string14.base, 2 + #t~string14.offset, 1);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string16.base, #t~string16.offset, 1);call write~init~int(0, #t~string16.base, 1 + #t~string16.offset, 1);call #t~string43.base, #t~string43.offset := #Ultimate.allocOnStack(30);call #t~string44.base, #t~string44.offset := #Ultimate.allocOnStack(9);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(21);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(30);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(9);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(21);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(30);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(9);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(25);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string72.base, #t~string72.offset, 1);call write~init~int(110, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(102, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string76.base, #t~string76.offset, 1);call write~init~int(80, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(117, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(109, #t~string76.base, 3 + #t~string76.offset, 1);call write~init~int(112, #t~string76.base, 4 + #t~string76.offset, 1);call write~init~int(58, #t~string76.base, 5 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 6 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string78.base, #t~string78.offset, 1);call write~init~int(110, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string80.base, #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 1 + #t~string80.offset, 1);call write~init~int(102, #t~string80.base, 2 + #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 3 + #t~string80.offset, 1);call #t~string82.base, #t~string82.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string82.base, #t~string82.offset, 1);call write~init~int(32, #t~string82.base, 1 + #t~string82.offset, 1);call write~init~int(0, #t~string82.base, 2 + #t~string82.offset, 1);call #t~string84.base, #t~string84.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string84.base, #t~string84.offset, 1);call write~init~int(0, #t~string84.base, 1 + #t~string84.offset, 1);~__SELECTED_FEATURE_base~0 := 0;~__SELECTED_FEATURE_highWaterSensor~0 := 0;~__SELECTED_FEATURE_lowWaterSensor~0 := 0;~__SELECTED_FEATURE_methaneQuery~0 := 0;~__SELECTED_FEATURE_methaneAlarm~0 := 0;~__SELECTED_FEATURE_stopCommand~0 := 0;~__SELECTED_FEATURE_startCommand~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~switchedOnBeforeTS~0 := 0; 4761#L-1 havoc main_#res;havoc main_#t~ret17, main_~retValue_acc~4, main_~tmp~0;havoc main_~retValue_acc~4;havoc main_~tmp~0;~__GUIDSL_ROOT_PRODUCTION~0 := 1; 4304#L297 havoc select_features_#t~ret19, select_features_#t~ret20, select_features_#t~ret21, select_features_#t~ret22, select_features_#t~ret23, select_features_#t~ret24;~__SELECTED_FEATURE_base~0 := 1;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4305#L272 select_features_#t~ret19 := select_one_#res;~__SELECTED_FEATURE_highWaterSensor~0 := select_features_#t~ret19;havoc select_features_#t~ret19;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4324#L272-1 select_features_#t~ret20 := select_one_#res;~__SELECTED_FEATURE_lowWaterSensor~0 := select_features_#t~ret20;havoc select_features_#t~ret20;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4284#L272-2 select_features_#t~ret21 := select_one_#res;~__SELECTED_FEATURE_methaneQuery~0 := select_features_#t~ret21;havoc select_features_#t~ret21;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4285#L272-3 select_features_#t~ret22 := select_one_#res;~__SELECTED_FEATURE_methaneAlarm~0 := select_features_#t~ret22;havoc select_features_#t~ret22;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4692#L272-4 select_features_#t~ret23 := select_one_#res;~__SELECTED_FEATURE_stopCommand~0 := select_features_#t~ret23;havoc select_features_#t~ret23;havoc select_one_#res;havoc select_one_#t~nondet18, select_one_~retValue_acc~5, select_one_~choice~0;havoc select_one_~retValue_acc~5;select_one_~choice~0 := select_one_#t~nondet18;havoc select_one_#t~nondet18;select_one_~retValue_acc~5 := select_one_~choice~0;select_one_#res := select_one_~retValue_acc~5; 4693#L272-5 select_features_#t~ret24 := select_one_#res;~__SELECTED_FEATURE_startCommand~0 := select_features_#t~ret24;havoc select_features_#t~ret24; 4760#L289 havoc valid_product_#res;havoc valid_product_~retValue_acc~6;havoc valid_product_~retValue_acc~6;valid_product_~retValue_acc~6 := ~__SELECTED_FEATURE_base~0;valid_product_#res := valid_product_~retValue_acc~6; 4540#L305 main_#t~ret17 := valid_product_#res;main_~tmp~0 := main_#t~ret17;havoc main_#t~ret17; 4541#L251 assume 0 != main_~tmp~0; 4393#L222 ~switchedOnBeforeTS~0 := 0; 4394#L1109 havoc test_#t~nondet60, test_#t~nondet61, test_#t~nondet62, test_#t~nondet63, test_~splverifierCounter~0, test_~tmp~4, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~4;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 4705#L1130-1 [2021-08-27 16:27:12,092 INFO L793 eck$LassoCheckResult]: Loop: 4705#L1130-1 assume !false; 5011#L698 assume test_~splverifierCounter~0 < 4; 5010#L699 test_~tmp~4 := test_#t~nondet60;havoc test_#t~nondet60; 5008#L707 assume !(0 != test_~tmp~4); 5007#L707-1 test_~tmp___0~0 := test_#t~nondet61;havoc test_#t~nondet61; 5006#L717 assume !(0 != test_~tmp___0~0); 5004#L717-1 test_~tmp___2~0 := test_#t~nondet62;havoc test_#t~nondet62; 5002#L727 assume !(0 != test_~tmp___2~0);test_~tmp___1~0 := test_#t~nondet63;havoc test_#t~nondet63; 5001#L739 assume !(0 != test_~tmp___1~0); 4989#L739-1 havoc __utac_acc__Specification5_spec__2_#t~ret87;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 5094#L1001 __utac_acc__Specification5_spec__2_#t~ret87 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret87;havoc __utac_acc__Specification5_spec__2_#t~ret87; 5092#L1119 assume !(0 != ~pumpRunning~0); 5091#L779 assume 0 != ~systemActive~0; 4983#L922 assume !(0 != ~__SELECTED_FEATURE_methaneAlarm~0); 4427#L879-2 assume !(0 != ~__SELECTED_FEATURE_lowWaterSensor~0); 4428#L836-8 assume !(0 != ~__SELECTED_FEATURE_highWaterSensor~0); 5017#L786 havoc __utac_acc__Specification5_spec__3_#t~ret88, __utac_acc__Specification5_spec__3_#t~ret89, __utac_acc__Specification5_spec__3_~tmp~11, __utac_acc__Specification5_spec__3_~tmp___0~3;havoc __utac_acc__Specification5_spec__3_~tmp~11;havoc __utac_acc__Specification5_spec__3_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 5016#L133 __utac_acc__Specification5_spec__3_#t~ret88 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~11 := __utac_acc__Specification5_spec__3_#t~ret88;havoc __utac_acc__Specification5_spec__3_#t~ret88; 5015#L1130 assume 2 != __utac_acc__Specification5_spec__3_~tmp~11;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~11;havoc isPumpRunning_~retValue_acc~11;isPumpRunning_~retValue_acc~11 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~11; 5014#L1001-1 __utac_acc__Specification5_spec__3_#t~ret89 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~3 := __utac_acc__Specification5_spec__3_#t~ret89;havoc __utac_acc__Specification5_spec__3_#t~ret89; 5013#L1134 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~3); 4705#L1130-1 [2021-08-27 16:27:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:12,093 INFO L82 PathProgramCache]: Analyzing trace with hash 527832624, now seen corresponding path program 3 times [2021-08-27 16:27:12,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:12,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49695672] [2021-08-27 16:27:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:12,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:12,139 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:12,177 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:12,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:12,177 INFO L82 PathProgramCache]: Analyzing trace with hash -353190610, now seen corresponding path program 1 times [2021-08-27 16:27:12,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:12,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164249104] [2021-08-27 16:27:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:12,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:12,182 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:12,186 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:27:12,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:27:12,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1641261663, now seen corresponding path program 1 times [2021-08-27 16:27:12,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:27:12,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662768875] [2021-08-27 16:27:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:27:12,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:27:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:12,209 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:27:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:27:12,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:28:03,896 WARN L207 SmtUtils]: Spent 51.36 s on a formula simplification. DAG size of input: 557 DAG size of output: 499 [2021-08-27 16:28:49,339 WARN L207 SmtUtils]: Spent 22.87 s on a formula simplification that was a NOOP. DAG size: 446 [2021-08-27 16:28:49,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:28:49 BoogieIcfgContainer [2021-08-27 16:28:49,470 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:28:49,471 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:28:49,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:28:49,471 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:28:49,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:27:09" (3/4) ... [2021-08-27 16:28:49,474 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:28:49,513 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:28:49,513 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:28:49,514 INFO L168 Benchmark]: Toolchain (without parser) took 102385.41 ms. Allocated memory was 50.3 MB in the beginning and 155.2 MB in the end (delta: 104.9 MB). Free memory was 26.3 MB in the beginning and 35.1 MB in the end (delta: -8.9 MB). Peak memory consumption was 96.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:49,515 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 32.3 MB in the beginning and 32.2 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:28:49,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.66 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.1 MB in the beginning and 36.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:49,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.44 ms. Allocated memory is still 60.8 MB. Free memory was 36.0 MB in the beginning and 38.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:49,516 INFO L168 Benchmark]: Boogie Preprocessor took 121.17 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 31.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:49,516 INFO L168 Benchmark]: RCFGBuilder took 1912.01 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 31.1 MB in the beginning and 31.4 MB in the end (delta: -251.5 kB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:49,516 INFO L168 Benchmark]: BuchiAutomizer took 99746.02 ms. Allocated memory was 81.8 MB in the beginning and 155.2 MB in the end (delta: 73.4 MB). Free memory was 31.4 MB in the beginning and 39.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:49,517 INFO L168 Benchmark]: Witness Printer took 42.71 ms. Allocated memory is still 155.2 MB. Free memory was 39.1 MB in the beginning and 35.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:28:49,518 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 32.3 MB in the beginning and 32.2 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 454.66 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.1 MB in the beginning and 36.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.44 ms. Allocated memory is still 60.8 MB. Free memory was 36.0 MB in the beginning and 38.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 121.17 ms. Allocated memory is still 60.8 MB. Free memory was 38.3 MB in the beginning and 31.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1912.01 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 31.1 MB in the beginning and 31.4 MB in the end (delta: -251.5 kB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 99746.02 ms. Allocated memory was 81.8 MB in the beginning and 155.2 MB in the end (delta: 73.4 MB). Free memory was 31.4 MB in the beginning and 39.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 83.8 MB. Max. memory is 16.1 GB. * Witness Printer took 42.71 ms. Allocated memory is still 155.2 MB. Free memory was 39.1 MB in the beginning and 35.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 1026 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 99.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 98.5s. Construction of modules took 0.5s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 71.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1653 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 1026 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 2084 SDtfs, 7638 SDslu, 7998 SDs, 0 SdLazy, 371 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 507.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc2 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: 697]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=14788} State at position 1 is {NULL=0, NULL=14801, NULL=14790, NULL=0, NULL=14813, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a809d1c=0, NULL=14788, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72001cd1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42bdef66=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b4add4b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d4de95c=0, methaneLevelCritical=0, NULL=14792, NULL=0, tmp=0, tmp___1=0, NULL=0, cleanupTimeShifts=4, retValue_acc=0, NULL=14791, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e589004=0, NULL=14803, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67b05a71=0, waterLevel=1, __SELECTED_FEATURE_methaneAlarm=0, NULL=0, NULL=14805, tmp___0=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, tmp=1, NULL=14814, NULL=14797, NULL=0, tmp=1, NULL=0, NULL=0, NULL=0, NULL=0, __SELECTED_FEATURE_stopCommand=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19d6c8a7=0, NULL=14796, head=0, NULL=14808, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24244cc3=0, choice=52, NULL=0, \result=52, __SELECTED_FEATURE_base=1, retValue_acc=0, NULL=0, NULL=0, NULL=14793, NULL=14800, NULL=0, NULL=14812, NULL=0, __GUIDSL_ROOT_PRODUCTION=1, NULL=14798, NULL=0, NULL=0, switchedOnBeforeTS=0, \result=0, NULL=14809, NULL=0, systemActive=1, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43c5517c=0, NULL=0, NULL=14789, NULL=14810, NULL=0, NULL=14806, __SELECTED_FEATURE_lowWaterSensor=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=14794, \result=0, retValue_acc=52, NULL=14802, tmp___0=0, NULL=0, __SELECTED_FEATURE_highWaterSensor=0, NULL=14807, retValue_acc=1, __SELECTED_FEATURE_methaneQuery=0, NULL=14804, tmp___2=0, splverifierCounter=0, NULL=0, NULL=14815, NULL=14795, NULL=14799, __SELECTED_FEATURE_startCommand=52, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@584bc8bc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5090e023=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7607bed7=0, NULL=14811, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c129d6e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@362a2e1b=0, NULL=14816, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int __SELECTED_FEATURE_base ; [L43] int __SELECTED_FEATURE_highWaterSensor ; [L44] int __SELECTED_FEATURE_lowWaterSensor ; [L45] int __SELECTED_FEATURE_methaneQuery ; [L46] int __SELECTED_FEATURE_methaneAlarm ; [L47] int __SELECTED_FEATURE_stopCommand ; [L48] int __SELECTED_FEATURE_startCommand ; [L49] int __GUIDSL_ROOT_PRODUCTION ; [L58] int waterLevel = 1; [L59] int methaneLevelCritical = 0; [L161] int cleanupTimeShifts = 4; [L488] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L767] int pumpRunning = 0; [L768] int systemActive = 1; [L1103] int switchedOnBeforeTS ; [L242] int retValue_acc ; [L243] int tmp ; [L296] __GUIDSL_ROOT_PRODUCTION = 1 [L281] __SELECTED_FEATURE_base = 1 [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L282] __SELECTED_FEATURE_highWaterSensor = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L283] __SELECTED_FEATURE_lowWaterSensor = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L284] __SELECTED_FEATURE_methaneQuery = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L285] __SELECTED_FEATURE_methaneAlarm = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L286] __SELECTED_FEATURE_stopCommand = select_one() [L267] int retValue_acc ; [L268] int choice = __VERIFIER_nondet_int(); [L271] retValue_acc = choice [L272] return (retValue_acc); [L287] __SELECTED_FEATURE_startCommand = select_one() [L301] int retValue_acc ; [L304] retValue_acc = __SELECTED_FEATURE_base [L305] return (retValue_acc); [L249] tmp = valid_product() [L251] COND TRUE \read(tmp) [L1108] switchedOnBeforeTS = 0 [L688] int splverifierCounter ; [L689] int tmp ; [L690] int tmp___0 ; [L691] int tmp___1 ; [L692] int tmp___2 ; [L695] splverifierCounter = 0 Loop: [L697] COND TRUE 1 [L699] COND TRUE splverifierCounter < 4 [L705] tmp = __VERIFIER_nondet_int() [L707] COND FALSE !(\read(tmp)) [L715] tmp___0 = __VERIFIER_nondet_int() [L717] COND FALSE !(\read(tmp___0)) [L725] tmp___2 = __VERIFIER_nondet_int() [L727] COND FALSE !(\read(tmp___2)) [L737] tmp___1 = __VERIFIER_nondet_int() [L739] COND FALSE !(\read(tmp___1)) [L997] int retValue_acc ; [L1000] retValue_acc = pumpRunning [L1001] return (retValue_acc); [L1117] switchedOnBeforeTS = isPumpRunning() [L779] COND FALSE !(\read(pumpRunning)) [L786] COND TRUE \read(systemActive) [L922] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) [L879] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) [L836] COND FALSE !(\read(__SELECTED_FEATURE_highWaterSensor)) [L1123] int tmp ; [L1124] int tmp___0 ; [L129] int retValue_acc ; [L132] retValue_acc = waterLevel [L133] return (retValue_acc); [L1128] tmp = getWaterLevel() [L1130] COND TRUE tmp != 2 [L997] int retValue_acc ; [L1000] retValue_acc = pumpRunning [L1001] return (retValue_acc); [L1132] tmp___0 = isPumpRunning() [L1134] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:28:49,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...