./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product64.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_spec4_product64.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 160c8d64ba84e9e53149049b180f0e762ed5d721 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:20:16,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:20:16,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:20:16,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:20:16,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:20:16,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:20:16,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:20:16,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:20:16,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:20:16,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:20:16,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:20:16,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:20:16,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:20:16,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:20:16,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:20:16,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:20:16,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:20:16,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:20:16,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:20:16,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:20:16,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:20:16,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:20:16,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:20:16,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:20:16,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:20:16,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:20:16,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:20:16,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:20:16,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:20:16,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:20:16,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:20:16,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:20:16,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:20:16,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:20:16,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:20:16,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:20:16,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:20:16,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:20:16,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:20:16,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:20:16,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:20:16,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:20:16,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:20:16,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:20:16,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:20:16,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:20:16,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:20:16,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:20:16,762 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:20:16,762 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:20:16,763 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:20:16,763 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:20:16,763 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:20:16,763 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:20:16,763 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:20:16,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:20:16,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:20:16,764 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:20:16,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:20:16,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:20:16,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:20:16,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:20:16,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:20:16,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:20:16,766 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:20:16,766 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 160c8d64ba84e9e53149049b180f0e762ed5d721 [2021-08-27 16:20:16,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:20:17,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:20:17,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:20:17,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:20:17,017 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:20:17,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c [2021-08-27 16:20:17,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fffc763c/046e4cf664764373acde047035c9e2b9/FLAG66dcf7c14 [2021-08-27 16:20:17,429 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:20:17,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product64.cil.c [2021-08-27 16:20:17,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fffc763c/046e4cf664764373acde047035c9e2b9/FLAG66dcf7c14 [2021-08-27 16:20:17,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fffc763c/046e4cf664764373acde047035c9e2b9 [2021-08-27 16:20:17,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:20:17,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:20:17,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:20:17,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:20:17,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:20:17,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:20:17" (1/1) ... [2021-08-27 16:20:17,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25cada28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:17, skipping insertion in model container [2021-08-27 16:20:17,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:20:17" (1/1) ... [2021-08-27 16:20:17,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:20:17,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:20:18,001 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_spec4_product64.cil.c[2573,2586] [2021-08-27 16:20:18,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:20:18,133 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:20:18,152 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_spec4_product64.cil.c[2573,2586] [2021-08-27 16:20:18,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:20:18,209 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:20:18,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18 WrapperNode [2021-08-27 16:20:18,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:20:18,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:20:18,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:20:18,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:20:18,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:20:18,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:20:18,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:20:18,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:20:18,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:20:18,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:20:18,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:20:18,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:20:18,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (1/1) ... [2021-08-27 16:20:18,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:20:18,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:20:18,376 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 16:20:18,381 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 16:20:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:20:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:20:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:20:18,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:20:19,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:20:19,252 INFO L299 CfgBuilder]: Removed 354 assume(true) statements. [2021-08-27 16:20:19,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:20:19 BoogieIcfgContainer [2021-08-27 16:20:19,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:20:19,255 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:20:19,255 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:20:19,259 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:20:19,260 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:20:19,260 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:20:17" (1/3) ... [2021-08-27 16:20:19,260 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a6cf906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:20:19, skipping insertion in model container [2021-08-27 16:20:19,260 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:20:19,260 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:20:18" (2/3) ... [2021-08-27 16:20:19,261 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a6cf906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:20:19, skipping insertion in model container [2021-08-27 16:20:19,261 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:20:19,261 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:20:19" (3/3) ... [2021-08-27 16:20:19,261 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product64.cil.c [2021-08-27 16:20:19,290 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:20:19,290 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:20:19,291 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:20:19,291 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:20:19,291 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:20:19,291 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:20:19,291 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:20:19,291 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:20:19,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 224 states, 223 states have (on average 1.506726457399103) internal successors, (336), 223 states have internal predecessors, (336), 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 16:20:19,329 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 16:20:19,329 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:20:19,329 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:20:19,334 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:20:19,334 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:19,334 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:20:19,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 224 states, 223 states have (on average 1.506726457399103) internal successors, (336), 223 states have internal predecessors, (336), 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 16:20:19,342 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 16:20:19,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:20:19,342 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:20:19,342 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:20:19,342 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:19,345 INFO L791 eck$LassoCheckResult]: Stem: 214#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);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(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 154#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 120#L1015true havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 197#L1023true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 218#L132true assume 0 != main_~tmp~0; 134#L105true havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 16#L165-1true [2021-08-27 16:20:19,346 INFO L793 eck$LassoCheckResult]: Loop: 16#L165-1true assume !false; 54#L196true assume test_~splverifierCounter~0 < 4; 66#L197true test_~tmp~2 := test_#t~nondet10;havoc test_#t~nondet10; 67#L205true assume !(0 != test_~tmp~2); 160#L205-1true test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 114#L215true assume !(0 != test_~tmp___0~1); 121#L215-1true test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 152#L225true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 58#L233-1true assume !(0 != ~pumpRunning~0); 139#L268true assume !(0 != ~systemActive~0); 96#L275true havoc __utac_acc__Specification4_spec__1_#t~ret8, __utac_acc__Specification4_spec__1_#t~ret9, __utac_acc__Specification4_spec__1_~tmp~1, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~1;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 187#L965true __utac_acc__Specification4_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~1 := __utac_acc__Specification4_spec__1_#t~ret8;havoc __utac_acc__Specification4_spec__1_#t~ret8; 124#L165true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~1); 16#L165-1true [2021-08-27 16:20:19,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:20:19,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:19,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949528144] [2021-08-27 16:20:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:19,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:19,539 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:19,633 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:19,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:19,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1665583732, now seen corresponding path program 1 times [2021-08-27 16:20:19,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:19,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602255125] [2021-08-27 16:20:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:19,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:20:19,702 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 16:20:19,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:20:19,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602255125] [2021-08-27 16:20:19,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602255125] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:20:19,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:20:19,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:20:19,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560400560] [2021-08-27 16:20:19,705 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:20:19,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:20:19,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:20:19,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:20:19,717 INFO L87 Difference]: Start difference. First operand has 224 states, 223 states have (on average 1.506726457399103) internal successors, (336), 223 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:20:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:20:19,783 INFO L93 Difference]: Finished difference Result 442 states and 648 transitions. [2021-08-27 16:20:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:20:19,784 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 442 states and 648 transitions. [2021-08-27 16:20:19,789 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 290 [2021-08-27 16:20:19,794 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 442 states to 428 states and 633 transitions. [2021-08-27 16:20:19,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 428 [2021-08-27 16:20:19,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 428 [2021-08-27 16:20:19,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 428 states and 633 transitions. [2021-08-27 16:20:19,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:20:19,798 INFO L681 BuchiCegarLoop]: Abstraction has 428 states and 633 transitions. [2021-08-27 16:20:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states and 633 transitions. [2021-08-27 16:20:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 426. [2021-08-27 16:20:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 426 states have (on average 1.4788732394366197) internal successors, (630), 425 states have internal predecessors, (630), 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 16:20:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 630 transitions. [2021-08-27 16:20:19,828 INFO L704 BuchiCegarLoop]: Abstraction has 426 states and 630 transitions. [2021-08-27 16:20:19,829 INFO L587 BuchiCegarLoop]: Abstraction has 426 states and 630 transitions. [2021-08-27 16:20:19,829 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:20:19,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 426 states and 630 transitions. [2021-08-27 16:20:19,831 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 288 [2021-08-27 16:20:19,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:20:19,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:20:19,831 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:20:19,831 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 16:20:19,832 INFO L791 eck$LassoCheckResult]: Stem: 900#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);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(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 876#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 844#L1015 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 845#L1023 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 890#L132 assume 0 != main_~tmp~0; 864#L105 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 703#L165-1 [2021-08-27 16:20:19,832 INFO L793 eck$LassoCheckResult]: Loop: 703#L165-1 assume !false; 704#L196 assume test_~splverifierCounter~0 < 4; 764#L197 test_~tmp~2 := test_#t~nondet10;havoc test_#t~nondet10; 780#L205 assume !(0 != test_~tmp~2); 782#L205-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 839#L215 assume !(0 != test_~tmp___0~1); 831#L215-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 846#L225 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 767#L233-1 assume !(0 != ~pumpRunning~0); 690#L268 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 868#L352 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret15, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 717#L326-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 675#L300-3 assume !(0 == ~pumpRunning~0); 677#L275 havoc __utac_acc__Specification4_spec__1_#t~ret8, __utac_acc__Specification4_spec__1_#t~ret9, __utac_acc__Specification4_spec__1_~tmp~1, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~1;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 817#L965 __utac_acc__Specification4_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~1 := __utac_acc__Specification4_spec__1_#t~ret8;havoc __utac_acc__Specification4_spec__1_#t~ret8; 849#L165 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~1); 703#L165-1 [2021-08-27 16:20:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:20:19,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:19,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831097784] [2021-08-27 16:20:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:19,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:19,862 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:19,895 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:19,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:19,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1220566465, now seen corresponding path program 1 times [2021-08-27 16:20:19,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:19,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562516869] [2021-08-27 16:20:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:19,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:20:19,916 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 16:20:19,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:20:19,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562516869] [2021-08-27 16:20:19,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562516869] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:20:19,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:20:19,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:20:19,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912810301] [2021-08-27 16:20:19,920 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:20:19,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:20:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:20:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:20:19,922 INFO L87 Difference]: Start difference. First operand 426 states and 630 transitions. cyclomatic complexity: 207 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:20:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:20:20,090 INFO L93 Difference]: Finished difference Result 419 states and 586 transitions. [2021-08-27 16:20:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:20:20,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 419 states and 586 transitions. [2021-08-27 16:20:20,101 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2021-08-27 16:20:20,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 419 states to 419 states and 586 transitions. [2021-08-27 16:20:20,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 419 [2021-08-27 16:20:20,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 419 [2021-08-27 16:20:20,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 419 states and 586 transitions. [2021-08-27 16:20:20,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:20:20,111 INFO L681 BuchiCegarLoop]: Abstraction has 419 states and 586 transitions. [2021-08-27 16:20:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states and 586 transitions. [2021-08-27 16:20:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-08-27 16:20:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 419 states have (on average 1.3985680190930787) internal successors, (586), 418 states have internal predecessors, (586), 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 16:20:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 586 transitions. [2021-08-27 16:20:20,134 INFO L704 BuchiCegarLoop]: Abstraction has 419 states and 586 transitions. [2021-08-27 16:20:20,134 INFO L587 BuchiCegarLoop]: Abstraction has 419 states and 586 transitions. [2021-08-27 16:20:20,134 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:20:20,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 419 states and 586 transitions. [2021-08-27 16:20:20,137 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 291 [2021-08-27 16:20:20,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:20:20,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:20:20,139 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:20:20,139 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:20:20,140 INFO L791 eck$LassoCheckResult]: Stem: 1716#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(13);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string22.base, #t~string22.offset, 1);call write~init~int(110, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 2 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(102, #t~string24.base, 2 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 3 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string26.base, #t~string26.offset, 1);call write~init~int(80, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(117, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(109, #t~string26.base, 3 + #t~string26.offset, 1);call write~init~int(112, #t~string26.base, 4 + #t~string26.offset, 1);call write~init~int(58, #t~string26.base, 5 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 6 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string32.base, #t~string32.offset, 1);call write~init~int(32, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 2 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string34.base, #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 1 + #t~string34.offset, 1);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(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1635#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 1533#L1015 havoc valid_product_#res;havoc valid_product_~retValue_acc~13;havoc valid_product_~retValue_acc~13;valid_product_~retValue_acc~13 := 1;valid_product_#res := valid_product_~retValue_acc~13; 1534#L1023 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 1701#L132 assume 0 != main_~tmp~0; 1582#L105 havoc test_#t~nondet10, test_#t~nondet11, test_#t~nondet12, test_#t~nondet13, test_~splverifierCounter~0, test_~tmp~2, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~2;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1567#L165-1 [2021-08-27 16:20:20,140 INFO L793 eck$LassoCheckResult]: Loop: 1567#L165-1 assume !false; 1568#L196 assume test_~splverifierCounter~0 < 4; 1657#L197 test_~tmp~2 := test_#t~nondet10;havoc test_#t~nondet10; 1937#L205 assume !(0 != test_~tmp~2); 1934#L205-1 test_~tmp___0~1 := test_#t~nondet11;havoc test_#t~nondet11; 1722#L215 assume !(0 != test_~tmp___0~1); 1718#L215-1 test_~tmp___2~0 := test_#t~nondet12;havoc test_#t~nondet12; 1802#L225 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 1632#L233-1 assume !(0 != ~pumpRunning~0); 1593#L268 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret16, processEnvironment_~tmp~5;havoc processEnvironment_~tmp~5; 1594#L352 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret15, processEnvironment__wrappee__methaneQuery_~tmp~4;havoc processEnvironment__wrappee__methaneQuery_~tmp~4; 1800#L326-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret14, processEnvironment__wrappee__highWaterSensor_~tmp~3;havoc processEnvironment__wrappee__highWaterSensor_~tmp~3; 1526#L300-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret35, isHighWaterLevel_~retValue_acc~3, isHighWaterLevel_~tmp~7, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~3;havoc isHighWaterLevel_~tmp~7;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~10;havoc isHighWaterSensorDry_~retValue_acc~10; 1527#L973-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~10 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~10; 1714#L978-3 isHighWaterLevel_#t~ret35 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~7 := isHighWaterLevel_#t~ret35;havoc isHighWaterLevel_#t~ret35; 1712#L471-9 assume 0 != isHighWaterLevel_~tmp~7;isHighWaterLevel_~tmp___0~2 := 0; 1713#L471-11 isHighWaterLevel_~retValue_acc~3 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~3; 1681#L477-3 processEnvironment__wrappee__highWaterSensor_#t~ret14 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~3 := processEnvironment__wrappee__highWaterSensor_#t~ret14;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14; 1682#L304-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~3); 1561#L275 havoc __utac_acc__Specification4_spec__1_#t~ret8, __utac_acc__Specification4_spec__1_#t~ret9, __utac_acc__Specification4_spec__1_~tmp~1, __utac_acc__Specification4_spec__1_~tmp___0~0;havoc __utac_acc__Specification4_spec__1_~tmp~1;havoc __utac_acc__Specification4_spec__1_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~9;havoc getWaterLevel_~retValue_acc~9;getWaterLevel_~retValue_acc~9 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~9; 1933#L965 __utac_acc__Specification4_spec__1_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~1 := __utac_acc__Specification4_spec__1_#t~ret8;havoc __utac_acc__Specification4_spec__1_#t~ret8; 1931#L165 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~1); 1567#L165-1 [2021-08-27 16:20:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:20,141 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:20:20,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:20,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198604552] [2021-08-27 16:20:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:20,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:20,174 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:20,219 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:20,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:20,221 INFO L82 PathProgramCache]: Analyzing trace with hash -231328531, now seen corresponding path program 1 times [2021-08-27 16:20:20,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:20,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41858034] [2021-08-27 16:20:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:20,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:20,228 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:20,239 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:20:20,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:20:20,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1021976595, now seen corresponding path program 1 times [2021-08-27 16:20:20,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:20:20,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942263335] [2021-08-27 16:20:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:20:20,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:20:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:20,275 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:20:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:20:20,333 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:21:01,377 WARN L207 SmtUtils]: Spent 40.73 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:21:42,814 WARN L207 SmtUtils]: Spent 20.43 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:21:42,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:21:42 BoogieIcfgContainer [2021-08-27 16:21:42,890 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:21:42,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:21:42,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:21:42,890 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:21:42,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:20:19" (3/4) ... [2021-08-27 16:21:42,892 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:21:42,917 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:21:42,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:21:42,917 INFO L168 Benchmark]: Toolchain (without parser) took 85111.53 ms. Allocated memory was 67.1 MB in the beginning and 107.0 MB in the end (delta: 39.8 MB). Free memory was 46.4 MB in the beginning and 38.8 MB in the end (delta: 7.6 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:42,918 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 47.5 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:21:42,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.14 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 42.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:42,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.68 ms. Allocated memory is still 67.1 MB. Free memory was 42.8 MB in the beginning and 37.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:42,919 INFO L168 Benchmark]: Boogie Preprocessor took 55.24 ms. Allocated memory is still 67.1 MB. Free memory was 37.1 MB in the beginning and 33.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:42,919 INFO L168 Benchmark]: RCFGBuilder took 911.94 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 33.4 MB in the beginning and 59.9 MB in the end (delta: -26.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:42,919 INFO L168 Benchmark]: BuchiAutomizer took 83634.96 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 59.4 MB in the beginning and 42.0 MB in the end (delta: 17.4 MB). Peak memory consumption was 63.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:42,919 INFO L168 Benchmark]: Witness Printer took 26.87 ms. Allocated memory is still 107.0 MB. Free memory was 42.0 MB in the beginning and 38.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:21:42,921 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 47.5 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.14 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 42.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.68 ms. Allocated memory is still 67.1 MB. Free memory was 42.8 MB in the beginning and 37.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.24 ms. Allocated memory is still 67.1 MB. Free memory was 37.1 MB in the beginning and 33.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 911.94 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 33.4 MB in the beginning and 59.9 MB in the end (delta: -26.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 83634.96 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 59.4 MB in the beginning and 42.0 MB in the end (delta: 17.4 MB). Peak memory consumption was 63.1 MB. Max. memory is 16.1 GB. * Witness Printer took 26.87 ms. Allocated memory is still 107.0 MB. Free memory was 42.0 MB in the beginning and 38.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 3 locations. The remainder module has 419 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 83.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 83.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 45.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 426 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 553 SDtfs, 496 SDslu, 392 SDs, 0 SdLazy, 53 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 124.1ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 195]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=25113} State at position 1 is {NULL=0, NULL=0, NULL=25130, NULL=25113, NULL=0, NULL=25120, NULL=0, NULL=25122, retValue_acc=1, methaneLevelCritical=0, tmp=0, retValue_acc=0, NULL=0, NULL=25135, NULL=0, tmp___1=0, NULL=0, NULL=25137, cleanupTimeShifts=4, waterLevel=1, NULL=0, NULL=25138, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54f80b5a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1274926b=0, NULL=25129, \result=1, head=0, pumpRunning=0, tmp=1, NULL=25132, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@760f1bf0=0, NULL=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=25124, NULL=0, retValue_acc=1, tmp=1, NULL=0, NULL=25119, tmp___0=0, NULL=25118, NULL=25126, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3134b257=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c6c14a7=0, NULL=25136, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a138521=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ac7dc87=0, head=0, NULL=0, NULL=0, tmp=0, NULL=25116, NULL=25140, tmp=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ed4b869=0, NULL=25139, tmp___0=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a0e8b14=0, NULL=0, tmp___0=0, NULL=25123, tmp=0, NULL=25133, NULL=0, systemActive=1, NULL=25134, \result=1, NULL=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=25114, \result=0, NULL=25131, NULL=25128, NULL=25141, NULL=25121, NULL=25115, tmp___2=76, retValue_acc=1, splverifierCounter=0, NULL=0, NULL=0, NULL=25117, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36b90284=0, NULL=25125, NULL=0, NULL=0, NULL=0, NULL=25127, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14f79b3c=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L261] int pumpRunning = 0; [L262] int systemActive = 1; [L693] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L890] int waterLevel = 1; [L891] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L1019] int retValue_acc ; [L1022] retValue_acc = 1 [L1023] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L186] int splverifierCounter ; [L187] int tmp ; [L188] int tmp___0 ; [L189] int tmp___1 ; [L190] int tmp___2 ; [L193] splverifierCounter = 0 Loop: [L195] COND TRUE 1 [L197] COND TRUE splverifierCounter < 4 [L203] tmp = __VERIFIER_nondet_int() [L205] COND FALSE !(\read(tmp)) [L213] tmp___0 = __VERIFIER_nondet_int() [L215] COND FALSE !(\read(tmp___0)) [L223] tmp___2 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp___2) [L519] systemActive = 1 [L268] COND FALSE !(\read(pumpRunning)) [L275] COND TRUE \read(systemActive) [L349] int tmp ; [L352] COND FALSE !(\read(pumpRunning)) [L323] int tmp ; [L326] COND FALSE !(\read(pumpRunning)) [L297] int tmp ; [L300] COND TRUE ! pumpRunning [L463] int retValue_acc ; [L464] int tmp ; [L465] int tmp___0 ; [L970] int retValue_acc ; [L973] COND TRUE waterLevel < 2 [L974] retValue_acc = 1 [L975] return (retValue_acc); [L469] tmp = isHighWaterSensorDry() [L471] COND TRUE \read(tmp) [L472] tmp___0 = 0 [L476] retValue_acc = tmp___0 [L477] return (retValue_acc); [L302] tmp = isHighWaterLevel() [L304] COND FALSE !(\read(tmp)) [L158] int tmp ; [L159] int tmp___0 ; [L961] int retValue_acc ; [L964] retValue_acc = waterLevel [L965] return (retValue_acc); [L163] tmp = getWaterLevel() [L165] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:21:42,970 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...