./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product55.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 43d840a4952877093d97c8e90564eb1be31dea0c 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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 16:19:14,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:19:14,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:19:14,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:19:14,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:19:14,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:19:14,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:19:14,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:19:14,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:19:14,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:19:14,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:19:14,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:19:14,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:19:14,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:19:14,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:19:14,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:19:14,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:19:14,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:19:14,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:19:14,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:19:14,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:19:14,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:19:14,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:19:14,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:19:14,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:19:14,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:19:14,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:19:14,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:19:14,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:19:14,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:19:14,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:19:14,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:19:14,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:19:14,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:19:14,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:19:14,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:19:14,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:19:14,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:19:14,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:19:14,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:19:14,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:19:14,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:19:14,763 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:19:14,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:19:14,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:19:14,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:19:14,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:19:14,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:19:14,765 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:19:14,765 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:19:14,765 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:19:14,765 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:19:14,765 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:19:14,766 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:19:14,766 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:19:14,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:19:14,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:19:14,766 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:19:14,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:19:14,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:19:14,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:19:14,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:19:14,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:19:14,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:19:14,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:19:14,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:19:14,767 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:19:14,768 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:19:14,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:19:14,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:19:14,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:19:14,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:19:14,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:19:14,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:19:14,769 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:19:14,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43d840a4952877093d97c8e90564eb1be31dea0c [2021-08-27 16:19:14,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:19:14,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:19:14,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:19:14,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:19:14,973 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:19:14,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c [2021-08-27 16:19:15,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd9d3c57/9ef581478a4942eabbb67567aae2ba02/FLAGeca04e419 [2021-08-27 16:19:15,378 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:19:15,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c [2021-08-27 16:19:15,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd9d3c57/9ef581478a4942eabbb67567aae2ba02/FLAGeca04e419 [2021-08-27 16:19:15,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edd9d3c57/9ef581478a4942eabbb67567aae2ba02 [2021-08-27 16:19:15,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:19:15,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:19:15,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:19:15,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:19:15,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:19:15,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b00116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15, skipping insertion in model container [2021-08-27 16:19:15,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:19:15,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:19:15,686 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c[6563,6576] [2021-08-27 16:19:15,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:19:15,757 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:19:15,780 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product55.cil.c[6563,6576] [2021-08-27 16:19:15,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:19:15,857 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:19:15,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15 WrapperNode [2021-08-27 16:19:15,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:19:15,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:19:15,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:19:15,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:19:15,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:19:15,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:19:15,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:19:15,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:19:15,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:19:15,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:19:15,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:19:15,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:19:15,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (1/1) ... [2021-08-27 16:19:15,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:19:16,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:19:16,012 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 16:19:16,050 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 16:19:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:19:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:19:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:19:16,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:19:16,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:19:16,817 INFO L299 CfgBuilder]: Removed 280 assume(true) statements. [2021-08-27 16:19:16,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:16 BoogieIcfgContainer [2021-08-27 16:19:16,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:19:16,820 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:19:16,820 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:19:16,823 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:19:16,823 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:16,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:19:15" (1/3) ... [2021-08-27 16:19:16,824 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b223cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:19:16, skipping insertion in model container [2021-08-27 16:19:16,824 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:16,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:19:15" (2/3) ... [2021-08-27 16:19:16,825 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b223cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:19:16, skipping insertion in model container [2021-08-27 16:19:16,825 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:19:16,825 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:16" (3/3) ... [2021-08-27 16:19:16,826 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product55.cil.c [2021-08-27 16:19:16,863 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:19:16,864 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:19:16,864 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:19:16,864 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:19:16,864 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:19:16,864 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:19:16,864 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:19:16,864 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:19:16,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 188 states, 187 states have (on average 1.5401069518716577) internal successors, (288), 187 states have internal predecessors, (288), 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 16:19:16,911 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-08-27 16:19:16,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:16,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:16,916 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,916 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,917 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:19:16,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 188 states, 187 states have (on average 1.5401069518716577) internal successors, (288), 187 states have internal predecessors, (288), 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 16:19:16,931 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 123 [2021-08-27 16:19:16,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:16,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:16,933 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,934 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:16,940 INFO L791 eck$LassoCheckResult]: Stem: 158#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 48#L-1true havoc main_#res;havoc main_#t~ret36, main_~retValue_acc~6, main_~tmp~7;havoc main_~retValue_acc~6;havoc main_~tmp~7; 144#L415true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 25#L423true main_#t~ret36 := valid_product_#res;main_~tmp~7 := main_#t~ret36;havoc main_#t~ret36; 108#L519true assume 0 != main_~tmp~7; 106#L496true havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 17#L372-1true [2021-08-27 16:19:16,941 INFO L793 eck$LassoCheckResult]: Loop: 17#L372-1true assume !false; 47#L58true assume test_~splverifierCounter~0 < 4; 137#L59true test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 157#L67true assume !(0 != test_~tmp~0); 120#L67-1true test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 98#L77true assume !(0 != test_~tmp___0~0); 112#L77-1true test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 67#L87true assume 0 != test_~tmp___2~0; 146#L93-1true assume !(0 != ~pumpRunning~0); 52#L131true assume !(0 != ~systemActive~0); 79#L138true havoc __utac_acc__Specification4_spec__1_#t~ret33, __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_~tmp~6, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~6;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 53#L974true __utac_acc__Specification4_spec__1_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~6 := __utac_acc__Specification4_spec__1_#t~ret33;havoc __utac_acc__Specification4_spec__1_#t~ret33; 37#L372true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~6); 17#L372-1true [2021-08-27 16:19:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:16,946 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:19:16,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:16,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644085116] [2021-08-27 16:19:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:16,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,132 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,241 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:17,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1667892533, now seen corresponding path program 1 times [2021-08-27 16:19:17,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:17,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150410267] [2021-08-27 16:19:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:17,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,251 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,266 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:17,267 INFO L82 PathProgramCache]: Analyzing trace with hash 46386405, now seen corresponding path program 1 times [2021-08-27 16:19:17,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:17,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785271535] [2021-08-27 16:19:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:17,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:19:17,381 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 16:19:17,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:19:17,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785271535] [2021-08-27 16:19:17,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785271535] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:19:17,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:19:17,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:19:17,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728696753] [2021-08-27 16:19:17,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:19:17,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:19:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:19:17,494 INFO L87 Difference]: Start difference. First operand has 188 states, 187 states have (on average 1.5401069518716577) internal successors, (288), 187 states have internal predecessors, (288), 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) [2021-08-27 16:19:17,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:19:17,644 INFO L93 Difference]: Finished difference Result 420 states and 618 transitions. [2021-08-27 16:19:17,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:19:17,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 420 states and 618 transitions. [2021-08-27 16:19:17,649 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 273 [2021-08-27 16:19:17,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 420 states to 399 states and 597 transitions. [2021-08-27 16:19:17,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 399 [2021-08-27 16:19:17,669 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 399 [2021-08-27 16:19:17,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 399 states and 597 transitions. [2021-08-27 16:19:17,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:19:17,671 INFO L681 BuchiCegarLoop]: Abstraction has 399 states and 597 transitions. [2021-08-27 16:19:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states and 597 transitions. [2021-08-27 16:19:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 222. [2021-08-27 16:19:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 1.4864864864864864) internal successors, (330), 221 states have internal predecessors, (330), 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 16:19:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 330 transitions. [2021-08-27 16:19:17,723 INFO L704 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-08-27 16:19:17,723 INFO L587 BuchiCegarLoop]: Abstraction has 222 states and 330 transitions. [2021-08-27 16:19:17,723 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:19:17,723 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 330 transitions. [2021-08-27 16:19:17,724 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 152 [2021-08-27 16:19:17,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:17,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:17,725 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:17,725 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:17,725 INFO L791 eck$LassoCheckResult]: Stem: 800#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 701#L-1 havoc main_#res;havoc main_#t~ret36, main_~retValue_acc~6, main_~tmp~7;havoc main_~retValue_acc~6;havoc main_~tmp~7; 702#L415 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 668#L423 main_#t~ret36 := valid_product_#res;main_~tmp~7 := main_#t~ret36;havoc main_#t~ret36; 669#L519 assume 0 != main_~tmp~7; 768#L496 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 651#L372-1 [2021-08-27 16:19:17,725 INFO L793 eck$LassoCheckResult]: Loop: 651#L372-1 assume !false; 655#L58 assume test_~splverifierCounter~0 < 4; 700#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 791#L67 assume !(0 != test_~tmp~0); 780#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 762#L77 assume !(0 != test_~tmp___0~0); 760#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 727#L87 assume 0 != test_~tmp___2~0; 695#L93-1 assume !(0 != ~pumpRunning~0); 708#L131 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 709#L215 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret12, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 703#L189-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 705#L163-3 assume !(0 == ~pumpRunning~0); 675#L138 havoc __utac_acc__Specification4_spec__1_#t~ret33, __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_~tmp~6, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~6;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 710#L974 __utac_acc__Specification4_spec__1_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~6 := __utac_acc__Specification4_spec__1_#t~ret33;havoc __utac_acc__Specification4_spec__1_#t~ret33; 686#L372 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~6); 651#L372-1 [2021-08-27 16:19:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:17,726 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:19:17,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:17,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781760750] [2021-08-27 16:19:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:17,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,772 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:17,822 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:17,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2101003018, now seen corresponding path program 1 times [2021-08-27 16:19:17,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:17,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862804155] [2021-08-27 16:19:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:17,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:19:17,833 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 16:19:17,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:19:17,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862804155] [2021-08-27 16:19:17,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862804155] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:19:17,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:19:17,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:19:17,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918916032] [2021-08-27 16:19:17,852 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:19:17,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:19:17,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:19:17,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:19:17,853 INFO L87 Difference]: Start difference. First operand 222 states and 330 transitions. cyclomatic complexity: 111 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:19:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:19:17,937 INFO L93 Difference]: Finished difference Result 225 states and 310 transitions. [2021-08-27 16:19:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:19:17,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 225 states and 310 transitions. [2021-08-27 16:19:17,940 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2021-08-27 16:19:17,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 225 states to 225 states and 310 transitions. [2021-08-27 16:19:17,942 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 225 [2021-08-27 16:19:17,942 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 225 [2021-08-27 16:19:17,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 310 transitions. [2021-08-27 16:19:17,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:19:17,945 INFO L681 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2021-08-27 16:19:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 310 transitions. [2021-08-27 16:19:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-08-27 16:19:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 225 states have (on average 1.3777777777777778) internal successors, (310), 224 states have internal predecessors, (310), 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 16:19:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 310 transitions. [2021-08-27 16:19:17,961 INFO L704 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2021-08-27 16:19:17,961 INFO L587 BuchiCegarLoop]: Abstraction has 225 states and 310 transitions. [2021-08-27 16:19:17,962 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:19:17,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 225 states and 310 transitions. [2021-08-27 16:19:17,963 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 158 [2021-08-27 16:19:17,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:19:17,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:19:17,965 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:19:17,965 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:19:17,965 INFO L791 eck$LassoCheckResult]: Stem: 1229#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~string16.base, #t~string16.offset := #Ultimate.allocOnStack(13);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string18.base, #t~string18.offset, 1);call write~init~int(110, #t~string18.base, 1 + #t~string18.offset, 1);call write~init~int(0, #t~string18.base, 2 + #t~string18.offset, 1);call #t~string20.base, #t~string20.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string20.base, #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 1 + #t~string20.offset, 1);call write~init~int(102, #t~string20.base, 2 + #t~string20.offset, 1);call write~init~int(0, #t~string20.base, 3 + #t~string20.offset, 1);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string22.base, #t~string22.offset, 1);call write~init~int(80, #t~string22.base, 1 + #t~string22.offset, 1);call write~init~int(117, #t~string22.base, 2 + #t~string22.offset, 1);call write~init~int(109, #t~string22.base, 3 + #t~string22.offset, 1);call write~init~int(112, #t~string22.base, 4 + #t~string22.offset, 1);call write~init~int(58, #t~string22.base, 5 + #t~string22.offset, 1);call write~init~int(0, #t~string22.base, 6 + #t~string22.offset, 1);call #t~string24.base, #t~string24.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string24.base, #t~string24.offset, 1);call write~init~int(110, #t~string24.base, 1 + #t~string24.offset, 1);call write~init~int(0, #t~string24.base, 2 + #t~string24.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string26.base, #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 1 + #t~string26.offset, 1);call write~init~int(102, #t~string26.base, 2 + #t~string26.offset, 1);call write~init~int(0, #t~string26.base, 3 + #t~string26.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string28.base, #t~string28.offset, 1);call write~init~int(32, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string30.base, #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 1 + #t~string30.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(30);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(9);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(21);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(30);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(9);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(21);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(30);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(9);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(25);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(30);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(9);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(13);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string75.base, #t~string75.offset, 1);call write~init~int(77, #t~string75.base, 1 + #t~string75.offset, 1);call write~init~int(101, #t~string75.base, 2 + #t~string75.offset, 1);call write~init~int(116, #t~string75.base, 3 + #t~string75.offset, 1);call write~init~int(104, #t~string75.base, 4 + #t~string75.offset, 1);call write~init~int(58, #t~string75.base, 5 + #t~string75.offset, 1);call write~init~int(0, #t~string75.base, 6 + #t~string75.offset, 1);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string77.base, #t~string77.offset, 1);call write~init~int(82, #t~string77.base, 1 + #t~string77.offset, 1);call write~init~int(73, #t~string77.base, 2 + #t~string77.offset, 1);call write~init~int(84, #t~string77.base, 3 + #t~string77.offset, 1);call write~init~int(0, #t~string77.base, 4 + #t~string77.offset, 1);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string79.base, #t~string79.offset, 1);call write~init~int(75, #t~string79.base, 1 + #t~string79.offset, 1);call write~init~int(0, #t~string79.base, 2 + #t~string79.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string81.base, #t~string81.offset, 1);call write~init~int(0, #t~string81.base, 1 + #t~string81.offset, 1);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1139#L-1 havoc main_#res;havoc main_#t~ret36, main_~retValue_acc~6, main_~tmp~7;havoc main_~retValue_acc~6;havoc main_~tmp~7; 1140#L415 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1110#L423 main_#t~ret36 := valid_product_#res;main_~tmp~7 := main_#t~ret36;havoc main_#t~ret36; 1111#L519 assume 0 != main_~tmp~7; 1194#L496 havoc test_#t~nondet7, test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_~splverifierCounter~0, test_~tmp~0, test_~tmp___0~0, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~0;havoc test_~tmp___0~0;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1096#L372-1 [2021-08-27 16:19:17,965 INFO L793 eck$LassoCheckResult]: Loop: 1096#L372-1 assume !false; 1277#L58 assume test_~splverifierCounter~0 < 4; 1217#L59 test_~tmp~0 := test_#t~nondet7;havoc test_#t~nondet7; 1218#L67 assume !(0 != test_~tmp~0); 1205#L67-1 test_~tmp___0~0 := test_#t~nondet8;havoc test_#t~nondet8; 1188#L77 assume !(0 != test_~tmp___0~0); 1185#L77-1 test_~tmp___2~0 := test_#t~nondet9;havoc test_#t~nondet9; 1198#L87 assume 0 != test_~tmp___2~0; 1284#L93-1 assume !(0 != ~pumpRunning~0); 1143#L131 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~3;havoc processEnvironment_~tmp~3; 1144#L215 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret12, processEnvironment__wrappee__lowWaterSensor_~tmp~2;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~2; 1141#L189-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret11, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 1142#L163-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret31, isHighWaterLevel_~retValue_acc~2, isHighWaterLevel_~tmp~4, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~2;havoc isHighWaterLevel_~tmp~4;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~12;havoc isHighWaterSensorDry_~retValue_acc~12; 1232#L982-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~12; 1207#L987-3 isHighWaterLevel_#t~ret31 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~4 := isHighWaterLevel_#t~ret31;havoc isHighWaterLevel_#t~ret31; 1208#L317-9 assume 0 != isHighWaterLevel_~tmp~4;isHighWaterLevel_~tmp___0~1 := 0; 1226#L317-11 isHighWaterLevel_~retValue_acc~2 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~2; 1227#L323-3 processEnvironment__wrappee__highWaterSensor_#t~ret11 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret11;havoc processEnvironment__wrappee__highWaterSensor_#t~ret11; 1160#L167-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 1119#L138 havoc __utac_acc__Specification4_spec__1_#t~ret33, __utac_acc__Specification4_spec__1_#t~ret34, __utac_acc__Specification4_spec__1_~tmp~6, __utac_acc__Specification4_spec__1_~tmp___0~3;havoc __utac_acc__Specification4_spec__1_~tmp~6;havoc __utac_acc__Specification4_spec__1_~tmp___0~3;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~11;havoc getWaterLevel_~retValue_acc~11;getWaterLevel_~retValue_acc~11 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~11; 1145#L974 __utac_acc__Specification4_spec__1_#t~ret33 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~6 := __utac_acc__Specification4_spec__1_#t~ret33;havoc __utac_acc__Specification4_spec__1_#t~ret33; 1125#L372 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~6); 1096#L372-1 [2021-08-27 16:19:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:17,966 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:19:17,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:17,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757996298] [2021-08-27 16:19:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:17,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:18,016 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:18,053 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:18,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:18,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2033396642, now seen corresponding path program 1 times [2021-08-27 16:19:18,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:18,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619671444] [2021-08-27 16:19:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:18,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:18,064 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:18,072 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:19:18,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1008265528, now seen corresponding path program 1 times [2021-08-27 16:19:18,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:19:18,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238387602] [2021-08-27 16:19:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:19:18,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:19:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:18,110 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:19:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:19:18,136 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:19:58,281 WARN L207 SmtUtils]: Spent 39.95 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:20:40,127 WARN L207 SmtUtils]: Spent 20.19 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:20:40,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:20:40 BoogieIcfgContainer [2021-08-27 16:20:40,243 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:20:40,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:20:40,257 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:20:40,258 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:20:40,258 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:19:16" (3/4) ... [2021-08-27 16:20:40,260 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:20:40,319 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:20:40,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:20:40,320 INFO L168 Benchmark]: Toolchain (without parser) took 84886.54 ms. Allocated memory was 56.6 MB in the beginning and 119.5 MB in the end (delta: 62.9 MB). Free memory was 40.6 MB in the beginning and 75.1 MB in the end (delta: -34.5 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:40,320 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.7 MB in the beginning and 28.6 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:20:40,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.69 ms. Allocated memory is still 56.6 MB. Free memory was 40.4 MB in the beginning and 31.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:40,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.63 ms. Allocated memory is still 56.6 MB. Free memory was 31.5 MB in the beginning and 26.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:40,327 INFO L168 Benchmark]: Boogie Preprocessor took 39.47 ms. Allocated memory is still 56.6 MB. Free memory was 26.7 MB in the beginning and 36.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:40,328 INFO L168 Benchmark]: RCFGBuilder took 824.99 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 36.1 MB in the beginning and 33.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:40,328 INFO L168 Benchmark]: BuchiAutomizer took 83425.27 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 33.1 MB in the beginning and 78.1 MB in the end (delta: -45.0 MB). Peak memory consumption was 52.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:40,328 INFO L168 Benchmark]: Witness Printer took 63.02 ms. Allocated memory is still 119.5 MB. Free memory was 78.1 MB in the beginning and 75.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:20:40,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 28.7 MB in the beginning and 28.6 MB in the end (delta: 60.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.69 ms. Allocated memory is still 56.6 MB. Free memory was 40.4 MB in the beginning and 31.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.63 ms. Allocated memory is still 56.6 MB. Free memory was 31.5 MB in the beginning and 26.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.47 ms. Allocated memory is still 56.6 MB. Free memory was 26.7 MB in the beginning and 36.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 824.99 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 36.1 MB in the beginning and 33.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 83425.27 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 33.1 MB in the beginning and 78.1 MB in the end (delta: -45.0 MB). Peak memory consumption was 52.1 MB. Max. memory is 16.1 GB. * Witness Printer took 63.02 ms. Allocated memory is still 119.5 MB. Free memory was 78.1 MB in the beginning and 75.1 MB in the end (delta: 3.0 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 225 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 83.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 82.9s. 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 58.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 177 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 225 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 477 SDtfs, 1478 SDslu, 1067 SDs, 0 SdLazy, 81 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 142.1ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 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: 57]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1101} State at position 1 is {retValue_acc=1, NULL=0, NULL=0, NULL=1122, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e49946d=76, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35948659=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46cbc38b=0, NULL=1101, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69d08190=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1353fd5f=0, NULL=0, NULL=1119, NULL=0, NULL=1124, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@533497fb=0, NULL=0, retValue_acc=0, NULL=1114, NULL=0, tmp___1=0, NULL=0, NULL=1126, cleanupTimeShifts=4, tmp=0, waterLevel=1, NULL=0, NULL=1113, tmp___0=0, NULL=1106, \result=1, head=0, pumpRunning=0, NULL=1120, tmp=1, \result=1, NULL=0, tmp=1, NULL=0, NULL=1121, NULL=0, tmp=1, NULL=0, NULL=1112, NULL=1103, NULL=1117, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11f34112=0, NULL=1105, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b60c1f9=0, tmp=0, head=0, NULL=0, NULL=0, NULL=1102, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d22a405=0, NULL=1125, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@241c3907=0, tmp=0, tmp___0=0, NULL=0, NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@234b5e4d=0, NULL=1104, tmp=0, tmp___0=0, NULL=0, systemActive=1, NULL=1116, \result=1, \result=0, NULL=0, NULL=0, NULL=0, NULL=0, NULL=1127, NULL=1128, \result=0, NULL=1108, NULL=0, NULL=0, retValue_acc=1, NULL=1109, NULL=1111, NULL=1123, NULL=1110, retValue_acc=1, tmp___2=76, splverifierCounter=0, NULL=0, NULL=0, NULL=1129, NULL=1118, NULL=0, NULL=0, NULL=1115, NULL=0, NULL=1107} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L437] int cleanupTimeShifts = 4; [L702] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L899] int waterLevel = 1; [L900] int methaneLevelCritical = 0; [L510] int retValue_acc ; [L511] int tmp ; [L419] int retValue_acc ; [L422] retValue_acc = 1 [L423] return (retValue_acc); [L517] tmp = valid_product() [L519] COND TRUE \read(tmp) [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 Loop: [L57] COND TRUE 1 [L59] COND TRUE splverifierCounter < 4 [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L212] int tmp ; [L215] COND FALSE !(\read(pumpRunning)) [L186] int tmp ; [L189] COND FALSE !(\read(pumpRunning)) [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L309] int retValue_acc ; [L310] int tmp ; [L311] int tmp___0 ; [L979] int retValue_acc ; [L982] COND TRUE waterLevel < 2 [L983] retValue_acc = 1 [L984] return (retValue_acc); [L315] tmp = isHighWaterSensorDry() [L317] COND TRUE \read(tmp) [L318] tmp___0 = 0 [L322] retValue_acc = tmp___0 [L323] return (retValue_acc); [L165] tmp = isHighWaterLevel() [L167] COND FALSE !(\read(tmp)) [L365] int tmp ; [L366] int tmp___0 ; [L970] int retValue_acc ; [L973] retValue_acc = waterLevel [L974] return (retValue_acc); [L370] tmp = getWaterLevel() [L372] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:20:40,413 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...