./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product42.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 cb3c160aa6739f38466ec4be21f196ba4a934feb .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:04:09,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:04:09,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:04:09,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:04:09,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:04:09,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:04:09,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:04:09,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:04:09,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:04:09,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:04:09,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:04:09,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:04:09,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:04:09,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:04:09,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:04:09,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:04:09,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:04:09,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:04:09,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:04:09,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:04:09,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:04:09,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:04:09,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:04:09,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:04:09,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:04:09,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:04:09,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:04:09,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:04:09,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:04:09,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:04:09,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:04:09,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:04:09,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:04:09,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:04:09,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:04:09,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:04:09,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:04:09,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:04:09,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:04:09,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:04:09,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:04:09,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:04:09,753 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:04:09,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:04:09,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:04:09,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:04:09,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:04:09,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:04:09,756 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:04:09,756 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:04:09,756 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:04:09,756 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:04:09,757 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:04:09,757 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:04:09,757 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:04:09,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:04:09,757 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:04:09,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:04:09,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:04:09,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:04:09,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:04:09,759 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:04:09,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:04:09,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:04:09,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:04:09,760 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:04:09,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb3c160aa6739f38466ec4be21f196ba4a934feb [2021-08-27 16:04:10,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:04:10,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:04:10,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:04:10,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:04:10,041 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:04:10,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c [2021-08-27 16:04:10,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c9675ee/fcf663302ad5442b9143597d1ac9c53d/FLAG7c7cfba53 [2021-08-27 16:04:10,481 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:04:10,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c [2021-08-27 16:04:10,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c9675ee/fcf663302ad5442b9143597d1ac9c53d/FLAG7c7cfba53 [2021-08-27 16:04:10,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c9675ee/fcf663302ad5442b9143597d1ac9c53d [2021-08-27 16:04:10,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:04:10,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:04:10,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:10,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:04:10,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:04:10,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:10" (1/1) ... [2021-08-27 16:04:10,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6efe741a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:10, skipping insertion in model container [2021-08-27 16:04:10,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:04:10" (1/1) ... [2021-08-27 16:04:10,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:04:10,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:04:11,057 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c[16731,16744] [2021-08-27 16:04:11,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:11,098 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:04:11,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c[16731,16744] [2021-08-27 16:04:11,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:04:11,191 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:04:11,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11 WrapperNode [2021-08-27 16:04:11,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:04:11,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:11,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:04:11,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:04:11,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:04:11,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:04:11,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:04:11,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:04:11,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:04:11,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:04:11,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:04:11,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:04:11,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (1/1) ... [2021-08-27 16:04:11,308 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:04:11,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:04:11,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:04:11,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:04:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:04:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:04:11,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:04:11,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:04:11,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:04:11,896 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-08-27 16:04:11,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:11 BoogieIcfgContainer [2021-08-27 16:04:11,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:04:11,898 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:04:11,898 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:04:11,900 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:04:11,900 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:11,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:04:10" (1/3) ... [2021-08-27 16:04:11,901 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3cd41897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:11, skipping insertion in model container [2021-08-27 16:04:11,901 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:11,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:04:11" (2/3) ... [2021-08-27 16:04:11,901 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3cd41897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:04:11, skipping insertion in model container [2021-08-27 16:04:11,901 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:04:11,902 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:11" (3/3) ... [2021-08-27 16:04:11,902 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2021-08-27 16:04:11,925 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:04:11,925 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:04:11,925 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:04:11,926 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:04:11,926 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:04:11,926 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:04:11,926 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:04:11,926 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:04:11,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 88 states, 87 states have (on average 1.528735632183908) internal successors, (133), 87 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:11,947 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-08-27 16:04:11,947 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:11,947 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:11,952 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:11,952 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:11,952 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:04:11,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 88 states, 87 states have (on average 1.528735632183908) internal successors, (133), 87 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:11,955 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 55 [2021-08-27 16:04:11,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:11,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:11,956 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:11,956 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:11,958 INFO L791 eck$LassoCheckResult]: Stem: 68#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~string50.base, #t~string50.offset := #Ultimate.allocOnStack(13);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(110, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 3 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string56.base, #t~string56.offset, 1);call write~init~int(80, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(117, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(109, #t~string56.base, 3 + #t~string56.offset, 1);call write~init~int(112, #t~string56.base, 4 + #t~string56.offset, 1);call write~init~int(58, #t~string56.base, 5 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 6 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string62.base, #t~string62.offset, 1);call write~init~int(32, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string64.base, #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 1 + #t~string64.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 53#L-1true havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 39#L732true havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 62#L740true main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 73#L828true assume 0 != main_~tmp~8; 13#L804true ~methAndRunningLastTime~0 := 0; 26#L674true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 63#L685-1true [2021-08-27 16:04:11,959 INFO L793 eck$LassoCheckResult]: Loop: 63#L685-1true assume !false; 58#L424true assume test_~splverifierCounter~0 < 4; 49#L425true test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 4#L433true assume !(0 != test_~tmp~3); 80#L433-1true test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 82#L443true assume !(0 != test_~tmp___0~0); 46#L443-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 60#L453true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 41#L461-2true assume !(0 != ~pumpRunning~0); 21#L496true assume !(0 != ~systemActive~0); 89#L503true havoc __utac_acc__Specification2_spec__2_#t~ret66, __utac_acc__Specification2_spec__2_#t~ret67, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 43#L895-1true __utac_acc__Specification2_spec__2_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret66;havoc __utac_acc__Specification2_spec__2_#t~ret66; 23#L685true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 63#L685-1true [2021-08-27 16:04:11,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:11,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:04:11,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:11,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625051568] [2021-08-27 16:04:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:11,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,084 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:12,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:12,170 INFO L82 PathProgramCache]: Analyzing trace with hash 4046091, now seen corresponding path program 1 times [2021-08-27 16:04:12,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:12,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166581788] [2021-08-27 16:04:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:12,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:04:12,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:12,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166581788] [2021-08-27 16:04:12,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166581788] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:12,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:12,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:04:12,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568866184] [2021-08-27 16:04:12,209 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:12,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:12,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:04:12,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:04:12,219 INFO L87 Difference]: Start difference. First operand has 88 states, 87 states have (on average 1.528735632183908) internal successors, (133), 87 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:12,241 INFO L93 Difference]: Finished difference Result 88 states and 123 transitions. [2021-08-27 16:04:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:04:12,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 123 transitions. [2021-08-27 16:04:12,244 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-08-27 16:04:12,247 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 81 states and 115 transitions. [2021-08-27 16:04:12,247 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 81 [2021-08-27 16:04:12,248 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 81 [2021-08-27 16:04:12,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 115 transitions. [2021-08-27 16:04:12,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:12,248 INFO L681 BuchiCegarLoop]: Abstraction has 81 states and 115 transitions. [2021-08-27 16:04:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states and 115 transitions. [2021-08-27 16:04:12,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-08-27 16:04:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 80 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 115 transitions. [2021-08-27 16:04:12,266 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 115 transitions. [2021-08-27 16:04:12,266 INFO L587 BuchiCegarLoop]: Abstraction has 81 states and 115 transitions. [2021-08-27 16:04:12,266 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:04:12,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states and 115 transitions. [2021-08-27 16:04:12,267 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-08-27 16:04:12,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:12,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:12,267 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:12,267 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:12,268 INFO L791 eck$LassoCheckResult]: Stem: 261#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~string50.base, #t~string50.offset := #Ultimate.allocOnStack(13);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(110, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 3 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string56.base, #t~string56.offset, 1);call write~init~int(80, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(117, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(109, #t~string56.base, 3 + #t~string56.offset, 1);call write~init~int(112, #t~string56.base, 4 + #t~string56.offset, 1);call write~init~int(58, #t~string56.base, 5 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 6 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string62.base, #t~string62.offset, 1);call write~init~int(32, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string64.base, #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 1 + #t~string64.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 256#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 238#L732 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 239#L740 main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 260#L828 assume 0 != main_~tmp~8; 204#L804 ~methAndRunningLastTime~0 := 0; 205#L674 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 214#L685-1 [2021-08-27 16:04:12,268 INFO L793 eck$LassoCheckResult]: Loop: 214#L685-1 assume !false; 259#L424 assume test_~splverifierCounter~0 < 4; 251#L425 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 185#L433 assume !(0 != test_~tmp~3); 187#L433-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 265#L443 assume !(0 != test_~tmp___0~0); 247#L443-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 248#L453 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 191#L461-2 assume !(0 != ~pumpRunning~0); 203#L496 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret46, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 217#L528 assume !(0 == ~pumpRunning~0); 226#L503 havoc __utac_acc__Specification2_spec__2_#t~ret66, __utac_acc__Specification2_spec__2_#t~ret67, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 241#L895-1 __utac_acc__Specification2_spec__2_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret66;havoc __utac_acc__Specification2_spec__2_#t~ret66; 220#L685 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 214#L685-1 [2021-08-27 16:04:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:12,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:04:12,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:12,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701695090] [2021-08-27 16:04:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:12,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,309 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,352 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:12,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:12,353 INFO L82 PathProgramCache]: Analyzing trace with hash 83659393, now seen corresponding path program 1 times [2021-08-27 16:04:12,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:12,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030687278] [2021-08-27 16:04:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:12,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:04:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:04:12,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:04:12,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030687278] [2021-08-27 16:04:12,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030687278] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:04:12,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:04:12,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:04:12,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333829727] [2021-08-27 16:04:12,367 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:04:12,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:04:12,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:04:12,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:04:12,368 INFO L87 Difference]: Start difference. First operand 81 states and 115 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:12,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:04:12,414 INFO L93 Difference]: Finished difference Result 125 states and 172 transitions. [2021-08-27 16:04:12,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:04:12,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 172 transitions. [2021-08-27 16:04:12,416 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 86 [2021-08-27 16:04:12,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 125 states and 172 transitions. [2021-08-27 16:04:12,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 125 [2021-08-27 16:04:12,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 125 [2021-08-27 16:04:12,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 172 transitions. [2021-08-27 16:04:12,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:04:12,418 INFO L681 BuchiCegarLoop]: Abstraction has 125 states and 172 transitions. [2021-08-27 16:04:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 172 transitions. [2021-08-27 16:04:12,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-08-27 16:04:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.376) internal successors, (172), 124 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:04:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 172 transitions. [2021-08-27 16:04:12,428 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 172 transitions. [2021-08-27 16:04:12,428 INFO L587 BuchiCegarLoop]: Abstraction has 125 states and 172 transitions. [2021-08-27 16:04:12,428 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:04:12,428 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 172 transitions. [2021-08-27 16:04:12,429 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 86 [2021-08-27 16:04:12,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:04:12,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:04:12,429 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:04:12,429 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] [2021-08-27 16:04:12,429 INFO L791 eck$LassoCheckResult]: Stem: 479#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~string50.base, #t~string50.offset := #Ultimate.allocOnStack(13);call #t~string52.base, #t~string52.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string52.base, #t~string52.offset, 1);call write~init~int(110, #t~string52.base, 1 + #t~string52.offset, 1);call write~init~int(0, #t~string52.base, 2 + #t~string52.offset, 1);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string54.base, #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 1 + #t~string54.offset, 1);call write~init~int(102, #t~string54.base, 2 + #t~string54.offset, 1);call write~init~int(0, #t~string54.base, 3 + #t~string54.offset, 1);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string56.base, #t~string56.offset, 1);call write~init~int(80, #t~string56.base, 1 + #t~string56.offset, 1);call write~init~int(117, #t~string56.base, 2 + #t~string56.offset, 1);call write~init~int(109, #t~string56.base, 3 + #t~string56.offset, 1);call write~init~int(112, #t~string56.base, 4 + #t~string56.offset, 1);call write~init~int(58, #t~string56.base, 5 + #t~string56.offset, 1);call write~init~int(0, #t~string56.base, 6 + #t~string56.offset, 1);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string62.base, #t~string62.offset, 1);call write~init~int(32, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 2 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string64.base, #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 1 + #t~string64.offset, 1);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string73.base, #t~string73.offset, 1);call write~init~int(77, #t~string73.base, 1 + #t~string73.offset, 1);call write~init~int(101, #t~string73.base, 2 + #t~string73.offset, 1);call write~init~int(116, #t~string73.base, 3 + #t~string73.offset, 1);call write~init~int(104, #t~string73.base, 4 + #t~string73.offset, 1);call write~init~int(58, #t~string73.base, 5 + #t~string73.offset, 1);call write~init~int(0, #t~string73.base, 6 + #t~string73.offset, 1);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string75.base, #t~string75.offset, 1);call write~init~int(82, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(73, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(84, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 4 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string77.base, #t~string77.offset, 1);call write~init~int(75, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 2 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string79.base, #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 1 + #t~string79.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 472#L-1 havoc main_#res;havoc main_#t~ret69, main_~retValue_acc~8, main_~tmp~8;havoc main_~retValue_acc~8;havoc main_~tmp~8; 454#L732 havoc valid_product_#res;havoc valid_product_~retValue_acc~7;havoc valid_product_~retValue_acc~7;valid_product_~retValue_acc~7 := 1;valid_product_#res := valid_product_~retValue_acc~7; 455#L740 main_#t~ret69 := valid_product_#res;main_~tmp~8 := main_#t~ret69;havoc main_#t~ret69; 478#L828 assume 0 != main_~tmp~8; 414#L804 ~methAndRunningLastTime~0 := 0; 415#L674 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_~splverifierCounter~0, test_~tmp~3, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 426#L685-1 [2021-08-27 16:04:12,429 INFO L793 eck$LassoCheckResult]: Loop: 426#L685-1 assume !false; 476#L424 assume test_~splverifierCounter~0 < 4; 477#L425 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 516#L433 assume !(0 != test_~tmp~3); 514#L433-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 484#L443 assume !(0 != test_~tmp___0~0); 464#L443-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 465#L453 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 401#L461-2 assume !(0 != ~pumpRunning~0); 429#L496 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret46, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 430#L528 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret65, isHighWaterLevel_~retValue_acc~5, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~5;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~11;havoc isHighWaterSensorDry_~retValue_acc~11; 406#L935 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~11; 407#L940 isHighWaterLevel_#t~ret65 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret65;havoc isHighWaterLevel_#t~ret65; 443#L648 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 412#L648-2 isHighWaterLevel_~retValue_acc~5 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~5; 413#L654 processEnvironment_#t~ret46 := isHighWaterLevel_#res;processEnvironment_~tmp~4 := processEnvironment_#t~ret46;havoc processEnvironment_#t~ret46; 475#L532 assume !(0 != processEnvironment_~tmp~4); 439#L503 havoc __utac_acc__Specification2_spec__2_#t~ret66, __utac_acc__Specification2_spec__2_#t~ret67, __utac_acc__Specification2_spec__2_~tmp~7, __utac_acc__Specification2_spec__2_~tmp___0~2;havoc __utac_acc__Specification2_spec__2_~tmp~7;havoc __utac_acc__Specification2_spec__2_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~9;havoc isMethaneLevelCritical_~retValue_acc~9;isMethaneLevelCritical_~retValue_acc~9 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~9; 458#L895-1 __utac_acc__Specification2_spec__2_#t~ret66 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~7 := __utac_acc__Specification2_spec__2_#t~ret66;havoc __utac_acc__Specification2_spec__2_#t~ret66; 433#L685 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~7);~methAndRunningLastTime~0 := 0; 426#L685-1 [2021-08-27 16:04:12,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:12,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:04:12,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:12,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857903377] [2021-08-27 16:04:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:12,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,467 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,525 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:12,526 INFO L82 PathProgramCache]: Analyzing trace with hash -160550867, now seen corresponding path program 1 times [2021-08-27 16:04:12,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:12,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85077760] [2021-08-27 16:04:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:12,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,533 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,542 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:04:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1005025907, now seen corresponding path program 1 times [2021-08-27 16:04:12,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:04:12,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672830334] [2021-08-27 16:04:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:04:12,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:04:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,586 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:04:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:04:12,630 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:04:55,477 WARN L207 SmtUtils]: Spent 42.59 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:05:39,003 WARN L207 SmtUtils]: Spent 21.19 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:05:39,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:05:39 BoogieIcfgContainer [2021-08-27 16:05:39,068 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:05:39,080 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:05:39,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:05:39,081 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:05:39,082 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:04:11" (3/4) ... [2021-08-27 16:05:39,084 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:05:39,151 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:05:39,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:05:39,173 INFO L168 Benchmark]: Toolchain (without parser) took 88304.34 ms. Allocated memory was 54.5 MB in the beginning and 144.7 MB in the end (delta: 90.2 MB). Free memory was 30.7 MB in the beginning and 37.6 MB in the end (delta: -6.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:39,174 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:05:39,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.73 ms. Allocated memory was 54.5 MB in the beginning and 79.7 MB in the end (delta: 25.2 MB). Free memory was 30.5 MB in the beginning and 57.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:39,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.48 ms. Allocated memory is still 79.7 MB. Free memory was 57.8 MB in the beginning and 54.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:39,179 INFO L168 Benchmark]: Boogie Preprocessor took 42.92 ms. Allocated memory is still 79.7 MB. Free memory was 54.5 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:39,179 INFO L168 Benchmark]: RCFGBuilder took 598.96 ms. Allocated memory is still 79.7 MB. Free memory was 52.4 MB in the beginning and 59.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:39,179 INFO L168 Benchmark]: BuchiAutomizer took 87169.95 ms. Allocated memory was 79.7 MB in the beginning and 144.7 MB in the end (delta: 65.0 MB). Free memory was 58.9 MB in the beginning and 39.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 94.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:39,182 INFO L168 Benchmark]: Witness Printer took 88.08 ms. Allocated memory is still 144.7 MB. Free memory was 39.7 MB in the beginning and 37.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:05:39,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.73 ms. Allocated memory was 54.5 MB in the beginning and 79.7 MB in the end (delta: 25.2 MB). Free memory was 30.5 MB in the beginning and 57.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.48 ms. Allocated memory is still 79.7 MB. Free memory was 57.8 MB in the beginning and 54.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.92 ms. Allocated memory is still 79.7 MB. Free memory was 54.5 MB in the beginning and 52.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 598.96 ms. Allocated memory is still 79.7 MB. Free memory was 52.4 MB in the beginning and 59.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 87169.95 ms. Allocated memory was 79.7 MB in the beginning and 144.7 MB in the end (delta: 65.0 MB). Free memory was 58.9 MB in the beginning and 39.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 94.9 MB. Max. memory is 16.1 GB. * Witness Printer took 88.08 ms. Allocated memory is still 144.7 MB. Free memory was 39.7 MB in the beginning and 37.6 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 3 locations. The remainder module has 125 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 87.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 86.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 19.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 125 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 235 SDtfs, 217 SDslu, 54 SDs, 0 SdLazy, 24 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.6ms 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: 423]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=28143} State at position 1 is {NULL=0, NULL=0, NULL=28143, NULL=28149, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1428ad6c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f23a280=76, NULL=28146, NULL=28154, methaneLevelCritical=0, retValue_acc=0, tmp=0, tmp___1=0, NULL=28169, NULL=0, NULL=28153, NULL=28157, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5693707c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3ef26484=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@303de807=0, waterLevel=1, NULL=0, NULL=0, NULL=28156, tmp___0=0, NULL=28152, \result=1, head=0, pumpRunning=0, NULL=0, NULL=0, tmp=1, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=28150, NULL=0, NULL=0, NULL=28166, NULL=28171, tmp=1, methAndRunningLastTime=0, NULL=28147, head=0, tmp=0, NULL=0, NULL=0, NULL=28164, NULL=0, NULL=0, NULL=28151, NULL=0, NULL=28155, retValue_acc=0, NULL=28158, NULL=28163, tmp___0=0, NULL=0, NULL=28170, NULL=28162, NULL=28165, NULL=28161, NULL=0, NULL=0, NULL=0, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b051cd2=0, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@324e4dad=0, NULL=0, NULL=28144, \result=0, NULL=28160, NULL=28168, retValue_acc=1, NULL=28145, NULL=28148, tmp___2=76, retValue_acc=1, tmp___0=0, splverifierCounter=0, NULL=0, \result=0, NULL=28167, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@624426fa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5e224239=0, NULL=28159, tmp=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; [L488] int pumpRunning = 0; [L489] int systemActive = 1; [L668] int methAndRunningLastTime ; [L745] int cleanupTimeShifts = 4; [L852] int waterLevel = 1; [L853] int methaneLevelCritical = 0; [L819] int retValue_acc ; [L820] int tmp ; [L736] int retValue_acc ; [L739] retValue_acc = 1 [L740] return (retValue_acc); [L826] tmp = valid_product() [L828] COND TRUE \read(tmp) [L673] methAndRunningLastTime = 0 [L414] int splverifierCounter ; [L415] int tmp ; [L416] int tmp___0 ; [L417] int tmp___1 ; [L418] int tmp___2 ; [L421] splverifierCounter = 0 Loop: [L423] COND TRUE 1 [L425] COND TRUE splverifierCounter < 4 [L431] tmp = __VERIFIER_nondet_int() [L433] COND FALSE !(\read(tmp)) [L441] tmp___0 = __VERIFIER_nondet_int() [L443] COND FALSE !(\read(tmp___0)) [L451] tmp___2 = __VERIFIER_nondet_int() [L453] COND TRUE \read(tmp___2) [L662] systemActive = 1 [L496] COND FALSE !(\read(pumpRunning)) [L503] COND TRUE \read(systemActive) [L525] int tmp ; [L528] COND TRUE ! pumpRunning [L640] int retValue_acc ; [L641] int tmp ; [L642] int tmp___0 ; [L932] int retValue_acc ; [L935] COND TRUE waterLevel < 2 [L936] retValue_acc = 1 [L937] return (retValue_acc); [L646] tmp = isHighWaterSensorDry() [L648] COND TRUE \read(tmp) [L649] tmp___0 = 0 [L653] retValue_acc = tmp___0 [L654] return (retValue_acc); [L530] tmp = isHighWaterLevel() [L532] COND FALSE !(\read(tmp)) [L678] int tmp ; [L679] int tmp___0 ; [L891] int retValue_acc ; [L894] retValue_acc = methaneLevelCritical [L895] return (retValue_acc); [L683] tmp = isMethaneLevelCritical() [L685] COND FALSE !(\read(tmp)) [L701] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:05:39,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...