./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product41.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 0e896c9575d2274fe1bd6f66c7235e6d3190661d ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 20:13:25,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 20:13:25,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 20:13:25,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 20:13:25,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 20:13:25,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 20:13:25,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 20:13:25,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 20:13:25,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 20:13:25,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 20:13:25,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 20:13:25,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 20:13:25,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 20:13:25,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 20:13:25,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 20:13:25,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 20:13:25,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 20:13:25,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 20:13:25,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 20:13:25,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 20:13:25,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 20:13:25,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 20:13:25,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 20:13:25,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 20:13:25,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 20:13:25,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 20:13:25,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 20:13:25,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 20:13:25,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 20:13:25,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 20:13:25,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 20:13:25,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 20:13:25,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 20:13:25,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 20:13:25,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 20:13:25,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 20:13:25,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 20:13:25,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 20:13:25,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 20:13:25,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 20:13:25,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 20:13:25,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 20:13:25,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 20:13:25,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 20:13:25,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 20:13:25,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 20:13:25,740 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 20:13:25,740 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 20:13:25,741 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 20:13:25,741 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 20:13:25,741 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 20:13:25,741 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 20:13:25,742 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 20:13:25,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 20:13:25,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 20:13:25,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 20:13:25,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 20:13:25,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 20:13:25,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 20:13:25,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 20:13:25,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 20:13:25,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 20:13:25,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 20:13:25,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 20:13:25,743 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 20:13:25,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 20:13:25,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 20:13:25,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 20:13:25,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 20:13:25,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 20:13:25,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 20:13:25,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 20:13:25,745 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 20:13:25,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e896c9575d2274fe1bd6f66c7235e6d3190661d [2021-07-06 20:13:25,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 20:13:26,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 20:13:26,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 20:13:26,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 20:13:26,006 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 20:13:26,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-07-06 20:13:26,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c393946fa/52631019f5e04bf492ae79d57cc8324c/FLAG79ba98d2c [2021-07-06 20:13:26,424 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 20:13:26,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-07-06 20:13:26,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c393946fa/52631019f5e04bf492ae79d57cc8324c/FLAG79ba98d2c [2021-07-06 20:13:26,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c393946fa/52631019f5e04bf492ae79d57cc8324c [2021-07-06 20:13:26,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 20:13:26,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 20:13:26,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 20:13:26,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 20:13:26,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 20:13:26,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:13:26" (1/1) ... [2021-07-06 20:13:26,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3317af36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:26, skipping insertion in model container [2021-07-06 20:13:26,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:13:26" (1/1) ... [2021-07-06 20:13:26,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 20:13:26,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 20:13:27,092 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17169,17182] [2021-07-06 20:13:27,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:13:27,117 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 20:13:27,177 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c[17169,17182] [2021-07-06 20:13:27,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 20:13:27,196 INFO L208 MainTranslator]: Completed translation [2021-07-06 20:13:27,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27 WrapperNode [2021-07-06 20:13:27,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 20:13:27,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 20:13:27,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 20:13:27,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 20:13:27,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 20:13:27,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 20:13:27,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 20:13:27,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 20:13:27,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 20:13:27,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 20:13:27,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 20:13:27,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 20:13:27,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (1/1) ... [2021-07-06 20:13:27,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 20:13:27,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 20:13:27,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 20:13:27,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 20:13:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 20:13:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 20:13:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 20:13:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 20:13:27,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 20:13:27,901 INFO L299 CfgBuilder]: Removed 114 assume(true) statements. [2021-07-06 20:13:27,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:13:27 BoogieIcfgContainer [2021-07-06 20:13:27,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 20:13:27,902 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 20:13:27,902 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 20:13:27,904 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 20:13:27,905 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:13:27,905 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 08:13:26" (1/3) ... [2021-07-06 20:13:27,906 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7668e561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:13:27, skipping insertion in model container [2021-07-06 20:13:27,906 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:13:27,906 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:13:27" (2/3) ... [2021-07-06 20:13:27,906 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7668e561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 08:13:27, skipping insertion in model container [2021-07-06 20:13:27,906 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 20:13:27,906 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:13:27" (3/3) ... [2021-07-06 20:13:27,907 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2021-07-06 20:13:27,939 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 20:13:27,939 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 20:13:27,940 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 20:13:27,940 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 20:13:27,940 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 20:13:27,940 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 20:13:27,940 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 20:13:27,940 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 20:13:27,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:13:27,972 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-07-06 20:13:27,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:13:27,972 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:13:27,977 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:13:27,977 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:13:27,977 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 20:13:27,978 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:13:27,989 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 53 [2021-07-06 20:13:27,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:13:27,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:13:27,990 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:13:27,990 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:13:27,996 INFO L791 eck$LassoCheckResult]: Stem: 29#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~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 10#L-1true havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~9, main_~tmp~7;havoc main_~retValue_acc~9;havoc main_~tmp~7; 46#L872true havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 82#L880true main_#t~ret76 := valid_product_#res;main_~tmp~7 := main_#t~ret76;havoc main_#t~ret76; 52#L836true assume 0 != main_~tmp~7; 67#L810true 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; 84#L902-1true [2021-07-06 20:13:27,997 INFO L793 eck$LassoCheckResult]: Loop: 84#L902-1true assume !false; 76#L423true assume test_~splverifierCounter~0 < 4; 14#L424true test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 32#L432true assume !(0 != test_~tmp~3); 33#L432-1true test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 20#L442true assume !(0 != test_~tmp___0~0); 4#L442-1true test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 54#L452true assume 0 != test_~tmp___2~0; 30#L458-2true assume !(0 != ~pumpRunning~0); 6#L588true assume !(0 != ~systemActive~0); 73#L595true havoc __utac_acc__Specification1_spec__1_#t~ret78, __utac_acc__Specification1_spec__1_#t~ret79, __utac_acc__Specification1_spec__1_~tmp~8, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~8;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 62#L525-1true __utac_acc__Specification1_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~8 := __utac_acc__Specification1_spec__1_#t~ret78;havoc __utac_acc__Specification1_spec__1_#t~ret78; 79#L902true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~8); 84#L902-1true [2021-07-06 20:13:28,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:28,006 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-07-06 20:13:28,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:28,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281228918] [2021-07-06 20:13:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:28,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,161 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,241 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,275 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:28,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1681191230, now seen corresponding path program 1 times [2021-07-06 20:13:28,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:28,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090270092] [2021-07-06 20:13:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:28,279 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,284 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,297 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,299 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:28,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:28,300 INFO L82 PathProgramCache]: Analyzing trace with hash 33087708, now seen corresponding path program 1 times [2021-07-06 20:13:28,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:28,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512609908] [2021-07-06 20:13:28,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:28,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:13:28,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:28,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:13:28,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:28,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:13:28,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:28,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:13:28,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:28,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-06 20:13:28,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:28,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:13:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:13:28,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:13:28,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512609908] [2021-07-06 20:13:28,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512609908] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:13:28,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:13:28,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 20:13:28,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759970344] [2021-07-06 20:13:28,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:28,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-07-06 20:13:28,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:13:28,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 20:13:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-07-06 20:13:28,499 INFO L87 Difference]: Start difference. First operand has 84 states, 83 states have (on average 1.5180722891566265) internal successors, (126), 83 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:13:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:13:28,638 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2021-07-06 20:13:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-06 20:13:28,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 115 transitions. [2021-07-06 20:13:28,644 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-07-06 20:13:28,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 77 states and 108 transitions. [2021-07-06 20:13:28,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2021-07-06 20:13:28,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2021-07-06 20:13:28,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 108 transitions. [2021-07-06 20:13:28,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:13:28,649 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-07-06 20:13:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 108 transitions. [2021-07-06 20:13:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-07-06 20:13:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 76 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:13:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2021-07-06 20:13:28,679 INFO L704 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-07-06 20:13:28,679 INFO L587 BuchiCegarLoop]: Abstraction has 77 states and 108 transitions. [2021-07-06 20:13:28,679 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 20:13:28,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 77 states and 108 transitions. [2021-07-06 20:13:28,681 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-07-06 20:13:28,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:13:28,682 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:13:28,683 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:13:28,683 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 20:13:28,684 INFO L791 eck$LassoCheckResult]: Stem: 221#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~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 200#L-1 havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~9, main_~tmp~7;havoc main_~retValue_acc~9;havoc main_~tmp~7; 201#L872 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 244#L880 main_#t~ret76 := valid_product_#res;main_~tmp~7 := main_#t~ret76;havoc main_#t~ret76; 247#L836 assume 0 != main_~tmp~7; 248#L810 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; 198#L902-1 [2021-07-06 20:13:28,686 INFO L793 eck$LassoCheckResult]: Loop: 198#L902-1 assume !false; 262#L423 assume test_~splverifierCounter~0 < 4; 208#L424 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 209#L432 assume !(0 != test_~tmp~3); 225#L432-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 216#L442 assume !(0 != test_~tmp___0~0); 186#L442-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 187#L452 assume 0 != test_~tmp___2~0; 222#L458-2 assume !(0 != ~pumpRunning~0); 192#L588 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 193#L620 assume !(0 == ~pumpRunning~0); 254#L595 havoc __utac_acc__Specification1_spec__1_#t~ret78, __utac_acc__Specification1_spec__1_#t~ret79, __utac_acc__Specification1_spec__1_~tmp~8, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~8;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 255#L525-1 __utac_acc__Specification1_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~8 := __utac_acc__Specification1_spec__1_#t~ret78;havoc __utac_acc__Specification1_spec__1_#t~ret78; 256#L902 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~8); 198#L902-1 [2021-07-06 20:13:28,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:28,687 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-07-06 20:13:28,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:28,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228445455] [2021-07-06 20:13:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:28,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,729 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,749 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,757 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:28,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:28,757 INFO L82 PathProgramCache]: Analyzing trace with hash -619089829, now seen corresponding path program 1 times [2021-07-06 20:13:28,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:28,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685393335] [2021-07-06 20:13:28,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:28,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 20:13:28,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:28,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:13:28,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:28,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 20:13:28,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:28,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 20:13:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 20:13:28,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 20:13:28,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685393335] [2021-07-06 20:13:28,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685393335] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 20:13:28,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 20:13:28,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 20:13:28,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91550866] [2021-07-06 20:13:28,782 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-07-06 20:13:28,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 20:13:28,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-06 20:13:28,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-06 20:13:28,783 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. cyclomatic complexity: 33 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) [2021-07-06 20:13:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 20:13:28,821 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2021-07-06 20:13:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-06 20:13:28,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 159 transitions. [2021-07-06 20:13:28,822 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2021-07-06 20:13:28,823 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 118 states and 159 transitions. [2021-07-06 20:13:28,823 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 118 [2021-07-06 20:13:28,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 118 [2021-07-06 20:13:28,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 159 transitions. [2021-07-06 20:13:28,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 20:13:28,824 INFO L681 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2021-07-06 20:13:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 159 transitions. [2021-07-06 20:13:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-07-06 20:13:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 118 states have (on average 1.347457627118644) internal successors, (159), 117 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 20:13:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 159 transitions. [2021-07-06 20:13:28,834 INFO L704 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2021-07-06 20:13:28,834 INFO L587 BuchiCegarLoop]: Abstraction has 118 states and 159 transitions. [2021-07-06 20:13:28,834 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 20:13:28,834 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 159 transitions. [2021-07-06 20:13:28,836 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 82 [2021-07-06 20:13:28,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 20:13:28,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 20:13:28,836 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-07-06 20:13:28,836 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] [2021-07-06 20:13:28,837 INFO L791 eck$LassoCheckResult]: Stem: 421#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~string47.base, #t~string47.offset := #Ultimate.allocOnStack(13);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string49.base, #t~string49.offset, 1);call write~init~int(77, #t~string49.base, 1 + #t~string49.offset, 1);call write~init~int(101, #t~string49.base, 2 + #t~string49.offset, 1);call write~init~int(116, #t~string49.base, 3 + #t~string49.offset, 1);call write~init~int(104, #t~string49.base, 4 + #t~string49.offset, 1);call write~init~int(58, #t~string49.base, 5 + #t~string49.offset, 1);call write~init~int(0, #t~string49.base, 6 + #t~string49.offset, 1);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string51.base, #t~string51.offset, 1);call write~init~int(82, #t~string51.base, 1 + #t~string51.offset, 1);call write~init~int(73, #t~string51.base, 2 + #t~string51.offset, 1);call write~init~int(84, #t~string51.base, 3 + #t~string51.offset, 1);call write~init~int(0, #t~string51.base, 4 + #t~string51.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(75, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string55.base, #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 1 + #t~string55.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(13);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string62.base, #t~string62.offset, 1);call write~init~int(110, #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(4);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(102, #t~string64.base, 2 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 3 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string66.base, #t~string66.offset, 1);call write~init~int(80, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(117, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(109, #t~string66.base, 3 + #t~string66.offset, 1);call write~init~int(112, #t~string66.base, 4 + #t~string66.offset, 1);call write~init~int(58, #t~string66.base, 5 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 6 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string72.base, #t~string72.offset, 1);call write~init~int(32, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 2 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string74.base, #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 1 + #t~string74.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4; 400#L-1 havoc main_#res;havoc main_#t~ret76, main_~retValue_acc~9, main_~tmp~7;havoc main_~retValue_acc~9;havoc main_~tmp~7; 401#L872 havoc valid_product_#res;havoc valid_product_~retValue_acc~11;havoc valid_product_~retValue_acc~11;valid_product_~retValue_acc~11 := 1;valid_product_#res := valid_product_~retValue_acc~11; 440#L880 main_#t~ret76 := valid_product_#res;main_~tmp~7 := main_#t~ret76;havoc main_#t~ret76; 449#L836 assume 0 != main_~tmp~7; 450#L810 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; 399#L902-1 [2021-07-06 20:13:28,837 INFO L793 eck$LassoCheckResult]: Loop: 399#L902-1 assume !false; 469#L423 assume test_~splverifierCounter~0 < 4; 406#L424 test_~tmp~3 := test_#t~nondet42;havoc test_#t~nondet42; 407#L432 assume !(0 != test_~tmp~3); 424#L432-1 test_~tmp___0~0 := test_#t~nondet43;havoc test_#t~nondet43; 414#L442 assume !(0 != test_~tmp___0~0); 387#L442-1 test_~tmp___2~0 := test_#t~nondet44;havoc test_#t~nondet44; 388#L452 assume 0 != test_~tmp___2~0; 422#L458-2 assume !(0 != ~pumpRunning~0); 393#L588 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret56, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 394#L620 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret75, isHighWaterLevel_~retValue_acc~8, isHighWaterLevel_~tmp~6, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~8;havoc isHighWaterLevel_~tmp~6;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~5;havoc isHighWaterSensorDry_~retValue_acc~5; 460#L565 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~5; 416#L570 isHighWaterLevel_#t~ret75 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~6 := isHighWaterLevel_#t~ret75;havoc isHighWaterLevel_#t~ret75; 417#L740 assume 0 != isHighWaterLevel_~tmp~6;isHighWaterLevel_~tmp___0~1 := 0; 425#L740-2 isHighWaterLevel_~retValue_acc~8 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~8; 418#L746 processEnvironment_#t~ret56 := isHighWaterLevel_#res;processEnvironment_~tmp~4 := processEnvironment_#t~ret56;havoc processEnvironment_#t~ret56; 419#L624 assume !(0 != processEnvironment_~tmp~4); 467#L595 havoc __utac_acc__Specification1_spec__1_#t~ret78, __utac_acc__Specification1_spec__1_#t~ret79, __utac_acc__Specification1_spec__1_~tmp~8, __utac_acc__Specification1_spec__1_~tmp___0~2;havoc __utac_acc__Specification1_spec__1_~tmp~8;havoc __utac_acc__Specification1_spec__1_~tmp___0~2;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~3;havoc isMethaneLevelCritical_~retValue_acc~3;isMethaneLevelCritical_~retValue_acc~3 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~3; 461#L525-1 __utac_acc__Specification1_spec__1_#t~ret78 := isMethaneLevelCritical_#res;__utac_acc__Specification1_spec__1_~tmp~8 := __utac_acc__Specification1_spec__1_#t~ret78;havoc __utac_acc__Specification1_spec__1_#t~ret78; 462#L902 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~8); 399#L902-1 [2021-07-06 20:13:28,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:28,837 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-07-06 20:13:28,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:28,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653139253] [2021-07-06 20:13:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:28,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,877 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,903 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,909 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:28,910 INFO L82 PathProgramCache]: Analyzing trace with hash -21695257, now seen corresponding path program 1 times [2021-07-06 20:13:28,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:28,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789818611] [2021-07-06 20:13:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:28,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,913 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,915 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,917 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 20:13:28,918 INFO L82 PathProgramCache]: Analyzing trace with hash -6983283, now seen corresponding path program 1 times [2021-07-06 20:13:28,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 20:13:28,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135744628] [2021-07-06 20:13:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 20:13:28,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 20:13:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,935 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 20:13:28,960 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 20:13:28,967 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 20:13:29,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:13:29,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-07-06 20:14:12,262 WARN L205 SmtUtils]: Spent 43.18 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-07-06 20:14:12,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 20:14:12,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2127 [2021-07-06 20:14:34,078 WARN L205 SmtUtils]: Spent 21.77 s on a formula simplification that was a NOOP. DAG size: 433 [2021-07-06 20:14:34,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 08:14:34 BoogieIcfgContainer [2021-07-06 20:14:34,186 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 20:14:34,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 20:14:34,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 20:14:34,187 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 20:14:34,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:13:27" (3/4) ... [2021-07-06 20:14:34,189 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-07-06 20:14:34,230 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 20:14:34,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 20:14:34,231 INFO L168 Benchmark]: Toolchain (without parser) took 67407.16 ms. Allocated memory was 67.1 MB in the beginning and 127.9 MB in the end (delta: 60.8 MB). Free memory was 47.4 MB in the beginning and 51.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 56.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:34,232 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 50.0 MB in the end (delta: 50.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:14:34,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.15 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 47.2 MB in the beginning and 62.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:34,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.74 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 59.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:34,232 INFO L168 Benchmark]: Boogie Preprocessor took 34.83 ms. Allocated memory is still 86.0 MB. Free memory was 59.4 MB in the beginning and 57.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:34,233 INFO L168 Benchmark]: RCFGBuilder took 630.64 ms. Allocated memory is still 86.0 MB. Free memory was 57.1 MB in the beginning and 50.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:34,233 INFO L168 Benchmark]: BuchiAutomizer took 66283.57 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 50.5 MB in the beginning and 53.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. [2021-07-06 20:14:34,233 INFO L168 Benchmark]: Witness Printer took 44.20 ms. Allocated memory is still 127.9 MB. Free memory was 53.5 MB in the beginning and 51.4 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 20:14:34,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 50.0 MB in the end (delta: 50.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 372.15 ms. Allocated memory was 67.1 MB in the beginning and 86.0 MB in the end (delta: 18.9 MB). Free memory was 47.2 MB in the beginning and 62.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.74 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 59.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.83 ms. Allocated memory is still 86.0 MB. Free memory was 59.4 MB in the beginning and 57.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 630.64 ms. Allocated memory is still 86.0 MB. Free memory was 57.1 MB in the beginning and 50.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 66283.57 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 50.5 MB in the beginning and 53.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 66.7 MB. Max. memory is 16.1 GB. * Witness Printer took 44.20 ms. Allocated memory is still 127.9 MB. Free memory was 53.5 MB in the beginning and 51.4 MB in the end (delta: 2.1 MB). There was no memory consumed. 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 118 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 66.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 65.9s. Construction of modules took 0.1s. 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 27.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 118 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 216 SDtfs, 529 SDslu, 50 SDs, 0 SdLazy, 29 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.1ms 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: 422]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=14572} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=0, NULL=14578, NULL=14572, NULL=0, NULL=14575, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49a99e7c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ce60169=59, retValue_acc=0, NULL=26634, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72a5fd20=0, NULL=26640, methaneLevelCritical=0, NULL=26631, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@780aa9db=0, tmp___0=0, retValue_acc=1, tmp=0, NULL=0, NULL=0, retValue_acc=0, NULL=26630, tmp___1=0, NULL=26629, tmp___0=0, NULL=0, NULL=0, NULL=26642, NULL=26637, NULL=26638, cleanupTimeShifts=4, NULL=14577, NULL=26627, NULL=26644, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42045a90=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2fe4a522=0, NULL=0, NULL=0, NULL=0, systemActive=1, waterLevel=1, NULL=0, NULL=0, NULL=0, retValue_acc=0, \result=0, NULL=26632, tmp___0=0, NULL=26628, NULL=0, NULL=0, NULL=14580, \result=1, head=0, pumpRunning=0, NULL=26633, \result=0, retValue_acc=1, NULL=26641, NULL=0, NULL=26643, NULL=0, NULL=0, tmp=1, NULL=0, NULL=0, NULL=26636, \result=1, NULL=0, tmp=0, NULL=0, NULL=14582, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2193813c=0, tmp___2=59, NULL=14579, NULL=14581, tmp=1, splverifierCounter=0, NULL=0, \result=0, NULL=14574, NULL=14573, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a2abc84=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60b3216c=0, head=0, tmp=0, NULL=0, NULL=0, NULL=14576, NULL=0, NULL=0, NULL=26639, NULL=26635} - 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; [L482] int waterLevel = 1; [L483] int methaneLevelCritical = 0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L751] int cleanupTimeShifts = 4; [L827] int retValue_acc ; [L828] int tmp ; [L876] int retValue_acc ; [L879] retValue_acc = 1 [L880] return (retValue_acc); [L834] tmp = valid_product() [L836] COND TRUE \read(tmp) [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 Loop: [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND FALSE !(\read(tmp)) [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND TRUE \read(tmp___2) [L588] COND FALSE !(\read(pumpRunning)) [L595] COND TRUE \read(systemActive) [L617] int tmp ; [L620] COND TRUE ! pumpRunning [L732] int retValue_acc ; [L733] int tmp ; [L734] int tmp___0 ; [L562] int retValue_acc ; [L565] COND TRUE waterLevel < 2 [L566] retValue_acc = 1 [L567] return (retValue_acc); [L738] tmp = isHighWaterSensorDry() [L740] COND TRUE \read(tmp) [L741] tmp___0 = 0 [L745] retValue_acc = tmp___0 [L746] return (retValue_acc); [L622] tmp = isHighWaterLevel() [L624] COND FALSE !(\read(tmp)) [L895] int tmp ; [L896] int tmp___0 ; [L521] int retValue_acc ; [L524] retValue_acc = methaneLevelCritical [L525] return (retValue_acc); [L900] tmp = isMethaneLevelCritical() [L902] COND FALSE !(\read(tmp)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-07-06 20:14:34,278 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...