./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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_spec3_product21.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 3db1272a61775d34f69f5bded6b264e1f3c0c6e0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-wip.dd.multireach-323-8d31f38 [2021-07-06 20:23:17,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:23:17,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:23:17,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:23:17,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:23:17,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:23:17,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:23:17,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:23:17,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:23:17,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:23:17,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:23:17,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:23:17,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:23:17,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:23:17,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:23:17,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:23:17,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:23:17,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:23:17,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:23:17,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:23:17,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:23:17,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:23:17,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:23:17,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:23:17,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:23:17,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:23:17,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:23:17,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:23:17,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:23:17,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:23:17,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:23:17,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:23:17,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:23:17,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:23:17,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:23:17,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:23:17,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:23:17,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:23:17,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:23:17,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:23:17,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:23:17,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:23:17,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:23:17,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:23:17,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:23:17,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:23:17,806 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:23:17,807 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:23:17,807 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:23:17,807 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:23:17,807 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:23:17,807 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:23:17,808 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:23:17,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:23:17,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:23:17,808 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:23:17,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:23:17,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:23:17,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:23:17,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:23:17,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:23:17,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:23:17,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:23:17,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:23:17,810 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:23:17,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:23:17,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:23:17,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:23:17,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:23:17,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:23:17,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:23:17,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:23:17,812 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:23:17,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3db1272a61775d34f69f5bded6b264e1f3c0c6e0 [2021-07-06 20:23:18,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:23:18,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:23:18,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:23:18,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:23:18,084 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:23:18,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product21.cil.c [2021-07-06 20:23:18,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc0ff376/b0ec12a9d08e41439ff43ef1f12849ff/FLAG44548fef6 [2021-07-06 20:23:18,545 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:23:18,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product21.cil.c [2021-07-06 20:23:18,556 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc0ff376/b0ec12a9d08e41439ff43ef1f12849ff/FLAG44548fef6 [2021-07-06 20:23:18,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dc0ff376/b0ec12a9d08e41439ff43ef1f12849ff [2021-07-06 20:23:18,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:23:18,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:23:18,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:23:18,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:23:18,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:23:18,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bfddda1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18, skipping insertion in model container [2021-07-06 20:23:18,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:23:18,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:23:18,787 WARN L224 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_spec3_product21.cil.c[13493,13506] [2021-07-06 20:23:18,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:23:18,822 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:23:18,852 WARN L224 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_spec3_product21.cil.c[13493,13506] [2021-07-06 20:23:18,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:23:18,881 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:23:18,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18 WrapperNode [2021-07-06 20:23:18,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:23:18,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:23:18,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:23:18,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:23:18,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,896 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:23:18,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:23:18,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:23:18,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:23:18,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:23:18,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:23:18,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:23:18,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:23:18,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (1/1) ... [2021-07-06 20:23:18,956 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:23:18,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:23:18,974 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) [2021-07-06 20:23:19,004 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 [2021-07-06 20:23:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:23:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:23:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:23:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:23:19,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:23:19,662 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2021-07-06 20:23:19,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:23:19 BoogieIcfgContainer [2021-07-06 20:23:19,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:23:19,664 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:23:19,664 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:23:19,666 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:23:19,666 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:23:19,667 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:23:18" (1/3) ... [2021-07-06 20:23:19,667 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d379fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:23:19, skipping insertion in model container [2021-07-06 20:23:19,667 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:23:19,668 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:23:18" (2/3) ... [2021-07-06 20:23:19,668 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d379fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:23:19, skipping insertion in model container [2021-07-06 20:23:19,668 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:23:19,668 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:23:19" (3/3) ... [2021-07-06 20:23:19,669 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product21.cil.c [2021-07-06 20:23:19,698 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:23:19,698 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:23:19,698 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:23:19,698 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:23:19,699 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:23:19,699 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:23:19,699 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:23:19,699 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:23:19,709 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.514018691588785) internal successors, (162), 107 states have internal predecessors, (162), 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) [2021-07-06 20:23:19,723 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-07-06 20:23:19,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:23:19,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:23:19,728 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:23:19,729 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:23:19,729 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:23:19,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.514018691588785) internal successors, (162), 107 states have internal predecessors, (162), 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) [2021-07-06 20:23:19,733 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-07-06 20:23:19,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:23:19,733 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:23:19,733 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:23:19,733 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:23:19,736 INFO L791 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string48.base, #t~string48.offset, 1);call write~init~int(110, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 2 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 3 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string52.base, #t~string52.offset, 1);call write~init~int(80, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(117, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(109, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(112, #t~string52.base, 4 + #t~string52.offset, 1);call write~init~int(58, #t~string52.base, 5 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 6 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string58.base, #t~string58.offset, 1);call write~init~int(32, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string60.base, #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 1 + #t~string60.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(13);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(77, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(101, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(116, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(104, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string71.base, #t~string71.offset, 1);call write~init~int(82, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(73, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(84, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 4 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(75, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 15#L-1true havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~9, main_~tmp~7;havoc main_~retValue_acc~9;havoc main_~tmp~7; 34#L918true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 42#L926true main_#t~ret76 := valid_product_#res;main_~tmp~7 := main_#t~ret76;havoc main_#t~ret76; 74#L848true assume 0 != main_~tmp~7; 10#L822true havoc test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_#t~nondet65, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 7#L877-1true [2021-07-06 20:23:19,737 INFO L793 eck$LassoCheckResult]: Loop: 7#L877-1true assume !false; 90#L619true assume test_~splverifierCounter~0 < 4; 58#L620true test_~tmp~6 := test_#t~nondet62;havoc test_#t~nondet62; 59#L628true assume !(0 != test_~tmp~6); 60#L628-1true test_~tmp___0~1 := test_#t~nondet63;havoc test_#t~nondet63; 91#L638true assume !(0 != test_~tmp___0~1); 92#L638-1true test_~tmp___2~0 := test_#t~nondet64;havoc test_#t~nondet64; 45#L648true assume 0 != test_~tmp___2~0; 8#L654-2true assume !(0 != ~pumpRunning~0); 41#L425true assume !(0 != ~systemActive~0); 87#L432true havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 31#L717-1true __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 48#L871true assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 7#L877-1true [2021-07-06 20:23:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:23:19,741 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:23:19,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:23:19,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091569874] [2021-07-06 20:23:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:23:19,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:23:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:19,869 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:19,947 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:19,981 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:23:19,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:23:19,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1680298507, now seen corresponding path program 1 times [2021-07-06 20:23:19,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:23:19,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349652068] [2021-07-06 20:23:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:23:19,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:23:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,001 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,010 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,013 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:23:20,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:23:20,014 INFO L82 PathProgramCache]: Analyzing trace with hash 33980431, now seen corresponding path program 1 times [2021-07-06 20:23:20,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:23:20,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320270381] [2021-07-06 20:23:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:23:20,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:23:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:23:20,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:23:20,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:23:20,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:23:20,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:23:20,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:23:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:23:20,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:23:20,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320270381] [2021-07-06 20:23:20,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320270381] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:23:20,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:23:20,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:23:20,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945173702] [2021-07-06 20:23:20,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-07-06 20:23:20,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:23:20,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:23:20,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:23:20,206 INFO L87 Difference]: Start difference. First operand has 108 states, 107 states have (on average 1.514018691588785) internal successors, (162), 107 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-07-06 20:23:20,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:23:20,309 INFO L93 Difference]: Finished difference Result 108 states and 151 transitions. [2021-07-06 20:23:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-06 20:23:20,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 108 states and 151 transitions. [2021-07-06 20:23:20,319 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 67 [2021-07-06 20:23:20,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 108 states to 101 states and 144 transitions. [2021-07-06 20:23:20,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 101 [2021-07-06 20:23:20,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 101 [2021-07-06 20:23:20,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 144 transitions. [2021-07-06 20:23:20,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:23:20,323 INFO L681 BuchiCegarLoop]: Abstraction has 101 states and 144 transitions. [2021-07-06 20:23:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 144 transitions. [2021-07-06 20:23:20,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-07-06 20:23:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 100 states have internal predecessors, (144), 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) [2021-07-06 20:23:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 144 transitions. [2021-07-06 20:23:20,348 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 144 transitions. [2021-07-06 20:23:20,348 INFO L587 BuchiCegarLoop]: Abstraction has 101 states and 144 transitions. [2021-07-06 20:23:20,349 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:23:20,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101 states and 144 transitions. [2021-07-06 20:23:20,351 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 67 [2021-07-06 20:23:20,351 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:23:20,351 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:23:20,352 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:23:20,352 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:23:20,352 INFO L791 eck$LassoCheckResult]: Stem: 326#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string48.base, #t~string48.offset, 1);call write~init~int(110, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 2 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 3 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string52.base, #t~string52.offset, 1);call write~init~int(80, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(117, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(109, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(112, #t~string52.base, 4 + #t~string52.offset, 1);call write~init~int(58, #t~string52.base, 5 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 6 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string58.base, #t~string58.offset, 1);call write~init~int(32, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string60.base, #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 1 + #t~string60.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(13);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(77, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(101, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(116, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(104, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string71.base, #t~string71.offset, 1);call write~init~int(82, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(73, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(84, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 4 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(75, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 256#L-1 havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~9, main_~tmp~7;havoc main_~retValue_acc~9;havoc main_~tmp~7; 257#L918 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 289#L926 main_#t~ret76 := valid_product_#res;main_~tmp~7 := main_#t~ret76;havoc main_#t~ret76; 298#L848 assume 0 != main_~tmp~7; 247#L822 havoc test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_#t~nondet65, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 241#L877-1 [2021-07-06 20:23:20,352 INFO L793 eck$LassoCheckResult]: Loop: 241#L877-1 assume !false; 243#L619 assume test_~splverifierCounter~0 < 4; 315#L620 test_~tmp~6 := test_#t~nondet62;havoc test_#t~nondet62; 316#L628 assume !(0 != test_~tmp~6); 296#L628-1 test_~tmp___0~1 := test_#t~nondet63;havoc test_#t~nondet63; 317#L638 assume !(0 != test_~tmp___0~1); 327#L638-1 test_~tmp___2~0 := test_#t~nondet64;havoc test_#t~nondet64; 303#L648 assume 0 != test_~tmp___2~0; 237#L654-2 assume !(0 != ~pumpRunning~0); 244#L425 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret43, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 272#L483 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret42, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 274#L457-1 assume !(0 != ~pumpRunning~0); 280#L432 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 284#L717-1 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 285#L871 assume 0 != __utac_acc__Specification3_spec__1_~tmp~8; 241#L877-1 [2021-07-06 20:23:20,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:23:20,353 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:23:20,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:23:20,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007793040] [2021-07-06 20:23:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:23:20,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:23:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,376 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,398 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,416 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:23:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:23:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash -2008522617, now seen corresponding path program 1 times [2021-07-06 20:23:20,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:23:20,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482226802] [2021-07-06 20:23:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:23:20,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:23:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,421 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,423 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,425 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:23:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:23:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash 441062433, now seen corresponding path program 1 times [2021-07-06 20:23:20,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:23:20,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048920531] [2021-07-06 20:23:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:23:20,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:23:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:23:20,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:23:20,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:23:20,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:23:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:23:20,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:23:20,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048920531] [2021-07-06 20:23:20,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048920531] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:23:20,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:23:20,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:23:20,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508738129] [2021-07-06 20:23:20,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-06 20:23:20,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:23:20,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 20:23:20,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-07-06 20:23:20,540 INFO L87 Difference]: Start difference. First operand 101 states and 144 transitions. cyclomatic complexity: 45 Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:23:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:23:20,671 INFO L93 Difference]: Finished difference Result 355 states and 516 transitions. [2021-07-06 20:23:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-06 20:23:20,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 355 states and 516 transitions. [2021-07-06 20:23:20,675 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 241 [2021-07-06 20:23:20,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 355 states to 355 states and 516 transitions. [2021-07-06 20:23:20,682 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 355 [2021-07-06 20:23:20,683 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 355 [2021-07-06 20:23:20,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 355 states and 516 transitions. [2021-07-06 20:23:20,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:23:20,686 INFO L681 BuchiCegarLoop]: Abstraction has 355 states and 516 transitions. [2021-07-06 20:23:20,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states and 516 transitions. [2021-07-06 20:23:20,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 196. [2021-07-06 20:23:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 196 states have (on average 1.4183673469387754) internal successors, (278), 195 states have internal predecessors, (278), 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) [2021-07-06 20:23:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 278 transitions. [2021-07-06 20:23:20,699 INFO L704 BuchiCegarLoop]: Abstraction has 196 states and 278 transitions. [2021-07-06 20:23:20,699 INFO L587 BuchiCegarLoop]: Abstraction has 196 states and 278 transitions. [2021-07-06 20:23:20,699 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:23:20,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 196 states and 278 transitions. [2021-07-06 20:23:20,701 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 134 [2021-07-06 20:23:20,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:23:20,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:23:20,702 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:23:20,702 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:23:20,702 INFO L791 eck$LassoCheckResult]: Stem: 811#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(13);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string48.base, #t~string48.offset, 1);call write~init~int(110, #t~string48.base, 1 + #t~string48.offset, 1);call write~init~int(0, #t~string48.base, 2 + #t~string48.offset, 1);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string50.base, #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 1 + #t~string50.offset, 1);call write~init~int(102, #t~string50.base, 2 + #t~string50.offset, 1);call write~init~int(0, #t~string50.base, 3 + #t~string50.offset, 1);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string52.base, #t~string52.offset, 1);call write~init~int(80, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(117, #t~string52.base, 2 + #t~string52.offset, 1);call write~init~int(109, #t~string52.base, 3 + #t~string52.offset, 1);call write~init~int(112, #t~string52.base, 4 + #t~string52.offset, 1);call write~init~int(58, #t~string52.base, 5 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 6 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(110, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 2 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string56.base, #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(102, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 3 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string58.base, #t~string58.offset, 1);call write~init~int(32, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string60.base, #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 1 + #t~string60.offset, 1);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(13);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string69.base, #t~string69.offset, 1);call write~init~int(77, #t~string69.base, 1 + #t~string69.offset, 1);call write~init~int(101, #t~string69.base, 2 + #t~string69.offset, 1);call write~init~int(116, #t~string69.base, 3 + #t~string69.offset, 1);call write~init~int(104, #t~string69.base, 4 + #t~string69.offset, 1);call write~init~int(58, #t~string69.base, 5 + #t~string69.offset, 1);call write~init~int(0, #t~string69.base, 6 + #t~string69.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string71.base, #t~string71.offset, 1);call write~init~int(82, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(73, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(84, #t~string71.base, 3 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 4 + #t~string71.offset, 1);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string73.base, #t~string73.offset, 1);call write~init~int(75, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 2 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string75.base, #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 1 + #t~string75.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 731#L-1 havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~9, main_~tmp~7;havoc main_~retValue_acc~9;havoc main_~tmp~7; 732#L918 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 764#L926 main_#t~ret76 := valid_product_#res;main_~tmp~7 := main_#t~ret76;havoc main_#t~ret76; 774#L848 assume 0 != main_~tmp~7; 722#L822 havoc test_#t~nondet62, test_#t~nondet63, test_#t~nondet64, test_#t~nondet65, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 719#L877-1 [2021-07-06 20:23:20,703 INFO L793 eck$LassoCheckResult]: Loop: 719#L877-1 assume !false; 720#L619 assume test_~splverifierCounter~0 < 4; 816#L620 test_~tmp~6 := test_#t~nondet62;havoc test_#t~nondet62; 903#L628 assume !(0 != test_~tmp~6); 901#L628-1 test_~tmp___0~1 := test_#t~nondet63;havoc test_#t~nondet63; 817#L638 assume !(0 != test_~tmp___0~1); 818#L638-1 test_~tmp___2~0 := test_#t~nondet64;havoc test_#t~nondet64; 776#L648 assume 0 != test_~tmp___2~0; 711#L654-2 assume !(0 != ~pumpRunning~0); 717#L425 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret43, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 747#L483 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret42, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 749#L457-1 assume !(0 != ~pumpRunning~0); 755#L432 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~8, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~8;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 760#L717-1 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~8 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 761#L871 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~8);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 798#L749 __utac_acc__Specification3_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 799#L877 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 719#L877-1 [2021-07-06 20:23:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:23:20,703 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:23:20,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:23:20,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098791574] [2021-07-06 20:23:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:23:20,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:23:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,743 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,775 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:23:20,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:23:20,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1749911687, now seen corresponding path program 1 times [2021-07-06 20:23:20,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:23:20,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265695300] [2021-07-06 20:23:20,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:23:20,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:23:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,790 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,791 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,793 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:23:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:23:20,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1340756845, now seen corresponding path program 1 times [2021-07-06 20:23:20,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:23:20,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888861145] [2021-07-06 20:23:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:23:20,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:23:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,829 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:23:20,853 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:23:20,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:23:20,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:23:20,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-07-06 20:24:03,083 WARN L205 SmtUtils]: Spent 42.16 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:24:03,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:24:03,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:24:24,363 WARN L205 SmtUtils]: Spent 21.21 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:24:24,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:24:24 BoogieIcfgContainer [2021-07-06 20:24:24,479 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:24:24,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:24:24,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:24:24,480 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:24:24,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:23:19" (3/4) ... [2021-07-06 20:24:24,482 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:24:24,533 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:24:24,538 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:24:24,538 INFO L168 Benchmark]: Toolchain (without parser) took 65970.12 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 34.0 MB in the beginning and 47.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:24:24,539 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 56.6 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:24:24,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.32 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.9 MB in the beginning and 43.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:24:24,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.65 ms. Allocated memory is still 69.2 MB. Free memory was 43.3 MB in the beginning and 39.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:24:24,540 INFO L168 Benchmark]: Boogie Preprocessor took 22.63 ms. Allocated memory is still 69.2 MB. Free memory was 39.9 MB in the beginning and 37.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:24:24,540 INFO L168 Benchmark]: RCFGBuilder took 715.36 ms. Allocated memory is still 69.2 MB. Free memory was 37.4 MB in the beginning and 30.3 MB in the end (delta: 7.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-07-06 20:24:24,540 INFO L168 Benchmark]: BuchiAutomizer took 64815.66 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 29.9 MB in the beginning and 49.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2021-07-06 20:24:24,541 INFO L168 Benchmark]: Witness Printer took 57.81 ms. Allocated memory is still 100.7 MB. Free memory was 49.5 MB in the beginning and 47.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:24:24,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 56.6 MB. Free memory is still 38.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.32 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.9 MB in the beginning and 43.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.65 ms. Allocated memory is still 69.2 MB. Free memory was 43.3 MB in the beginning and 39.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.63 ms. Allocated memory is still 69.2 MB. Free memory was 39.9 MB in the beginning and 37.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 715.36 ms. Allocated memory is still 69.2 MB. Free memory was 37.4 MB in the beginning and 30.3 MB in the end (delta: 7.1 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 64815.66 ms. Allocated memory was 69.2 MB in the beginning and 100.7 MB in the end (delta: 31.5 MB). Free memory was 29.9 MB in the beginning and 49.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. * Witness Printer took 57.81 ms. Allocated memory is still 100.7 MB. Free memory was 49.5 MB in the beginning and 47.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 196 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 64.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 64.3s. 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 29.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 159 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 196 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 346 SDtfs, 982 SDslu, 606 SDs, 0 SdLazy, 87 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 119.0ms 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: 618]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=26951} State at position 1 is {NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5af2eb58=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17b339de=0, NULL=26951, NULL=26960, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d9555e=0, NULL=26974, NULL=0, NULL=26963, retValue_acc=0, NULL=26955, methaneLevelCritical=0, NULL=26962, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79a094a7=0, NULL=0, tmp=0, tmp=0, NULL=0, tmp___1=0, NULL=26957, NULL=0, NULL=0, NULL=26975, NULL=26961, NULL=26959, cleanupTimeShifts=4, NULL=26971, NULL=26979, NULL=26965, tmp=0, tmp___0=1, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@618bdec1=0, NULL=0, systemActive=1, waterLevel=1, NULL=26954, \result=1, NULL=0, NULL=0, NULL=26956, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=26952, NULL=0, NULL=0, NULL=26977, \result=1, head=0, pumpRunning=0, \result=0, NULL=26967, NULL=0, NULL=0, tmp=1, NULL=0, NULL=26973, NULL=26964, NULL=26953, NULL=0, NULL=26970, NULL=0, NULL=26978, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5241eb0c=0, retValue_acc=1, tmp___2=60, NULL=0, NULL=26969, tmp___0=0, NULL=26966, splverifierCounter=0, NULL=0, \result=0, NULL=26972, NULL=26968, tmp___1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5553de37=0, head=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a28f5e8=60, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@210ce57b=0, NULL=26976, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36074b83=0, NULL=0, NULL=0, NULL=26958, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L417] int pumpRunning = 0; [L418] int systemActive = 1; [L674] int waterLevel = 1; [L675] int methaneLevelCritical = 0; [L763] int cleanupTimeShifts = 4; [L839] int retValue_acc ; [L840] int tmp ; [L922] int retValue_acc ; [L925] retValue_acc = 1 [L926] return (retValue_acc); [L846] tmp = valid_product() [L848] COND TRUE \read(tmp) [L609] int splverifierCounter ; [L610] int tmp ; [L611] int tmp___0 ; [L612] int tmp___1 ; [L613] int tmp___2 ; [L616] splverifierCounter = 0 Loop: [L618] COND TRUE 1 [L620] COND TRUE splverifierCounter < 4 [L626] tmp = __VERIFIER_nondet_int() [L628] COND FALSE !(\read(tmp)) [L636] tmp___0 = __VERIFIER_nondet_int() [L638] COND FALSE !(\read(tmp___0)) [L646] tmp___2 = __VERIFIER_nondet_int() [L648] COND TRUE \read(tmp___2) [L425] COND FALSE !(\read(pumpRunning)) [L432] COND TRUE \read(systemActive) [L480] int tmp ; [L483] COND FALSE !(\read(pumpRunning)) [L454] int tmp ; [L457] COND FALSE !(\read(pumpRunning)) [L863] int tmp ; [L864] int tmp___0 ; [L865] int tmp___1 ; [L713] int retValue_acc ; [L716] retValue_acc = methaneLevelCritical [L717] return (retValue_acc); [L869] tmp = isMethaneLevelCritical() [L871] COND FALSE !(\read(tmp)) [L745] int retValue_acc ; [L748] retValue_acc = waterLevel [L749] return (retValue_acc); [L875] tmp___0 = getWaterLevel() [L877] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:24:24,590 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...