./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product37.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_product37.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 e155c6ff67a88d7a4e2430bd4435eb1c3cafcd71 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:17:29,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:17:29,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:17:29,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:17:29,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:17:29,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:17:29,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:17:29,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:17:29,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:17:29,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:17:29,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:17:29,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:17:29,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:17:29,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:17:29,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:17:29,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:17:29,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:17:29,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:17:29,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:17:29,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:17:29,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:17:29,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:17:29,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:17:29,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:17:29,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:17:29,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:17:29,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:17:29,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:17:29,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:17:29,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:17:29,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:17:29,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:17:29,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:17:29,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:17:29,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:17:29,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:17:29,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:17:29,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:17:29,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:17:29,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:17:29,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:17:29,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:17:30,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:17:30,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:17:30,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:17:30,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:17:30,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:17:30,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:17:30,003 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:17:30,003 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:17:30,003 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:17:30,004 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:17:30,004 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:17:30,004 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:17:30,005 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:17:30,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:17:30,005 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:17:30,005 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:17:30,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:17:30,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:17:30,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:17:30,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:17:30,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:17:30,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:17:30,006 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:17:30,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:17:30,006 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:17:30,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:17:30,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:17:30,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:17:30,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:17:30,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:17:30,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:17:30,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:17:30,008 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:17:30,009 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e155c6ff67a88d7a4e2430bd4435eb1c3cafcd71 [2021-08-27 16:17:30,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:17:30,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:17:30,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:17:30,444 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:17:30,444 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:17:30,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2021-08-27 16:17:30,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229179472/57e0d91808bd46768679d1bd5240be46/FLAG1eb83a325 [2021-08-27 16:17:30,939 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:17:30,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2021-08-27 16:17:30,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229179472/57e0d91808bd46768679d1bd5240be46/FLAG1eb83a325 [2021-08-27 16:17:31,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/229179472/57e0d91808bd46768679d1bd5240be46 [2021-08-27 16:17:31,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:17:31,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:17:31,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:17:31,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:17:31,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:17:31,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636899e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31, skipping insertion in model container [2021-08-27 16:17:31,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:17:31,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:17:31,490 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_product37.cil.c[6374,6387] [2021-08-27 16:17:31,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:17:31,560 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:17:31,591 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_product37.cil.c[6374,6387] [2021-08-27 16:17:31,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:17:31,644 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:17:31,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31 WrapperNode [2021-08-27 16:17:31,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:17:31,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:17:31,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:17:31,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:17:31,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:17:31,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:17:31,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:17:31,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:17:31,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:17:31,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:17:31,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:17:31,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:17:31,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (1/1) ... [2021-08-27 16:17:31,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:17:31,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:17:31,830 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 16:17:31,887 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 16:17:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:17:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:17:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:17:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:17:32,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:17:32,574 INFO L299 CfgBuilder]: Removed 156 assume(true) statements. [2021-08-27 16:17:32,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:32 BoogieIcfgContainer [2021-08-27 16:17:32,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:17:32,577 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:17:32,577 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:17:32,579 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:17:32,580 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:32,580 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:17:31" (1/3) ... [2021-08-27 16:17:32,581 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4898b57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:17:32, skipping insertion in model container [2021-08-27 16:17:32,581 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:32,581 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:17:31" (2/3) ... [2021-08-27 16:17:32,581 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4898b57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:17:32, skipping insertion in model container [2021-08-27 16:17:32,581 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:17:32,581 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:32" (3/3) ... [2021-08-27 16:17:32,582 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2021-08-27 16:17:32,614 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:17:32,614 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:17:32,614 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:17:32,615 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:17:32,615 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:17:32,615 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:17:32,615 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:17:32,615 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:17:32,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.5420560747663552) internal successors, (165), 107 states have internal predecessors, (165), 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 16:17:32,645 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-08-27 16:17:32,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:32,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:32,650 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:32,651 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:32,651 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:17:32,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.5420560747663552) internal successors, (165), 107 states have internal predecessors, (165), 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 16:17:32,655 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-08-27 16:17:32,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:32,655 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:32,656 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:32,656 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:32,664 INFO L791 eck$LassoCheckResult]: Stem: 103#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~string34.base, #t~string34.offset := #Ultimate.allocOnStack(13);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string36.base, #t~string36.offset, 1);call write~init~int(77, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(101, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(116, #t~string36.base, 3 + #t~string36.offset, 1);call write~init~int(104, #t~string36.base, 4 + #t~string36.offset, 1);call write~init~int(58, #t~string36.base, 5 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 6 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string38.base, #t~string38.offset, 1);call write~init~int(82, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(73, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(84, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 4 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string40.base, #t~string40.offset, 1);call write~init~int(75, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.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(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 41#L-1true havoc main_#res;havoc main_#t~ret32, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 102#L67true havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 63#L75true main_#t~ret32 := valid_product_#res;main_~tmp~4 := main_#t~ret32;havoc main_#t~ret32; 21#L418true assume 0 != main_~tmp~4; 78#L395true havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, 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; 19#L910-1true [2021-08-27 16:17:32,665 INFO L793 eck$LassoCheckResult]: Loop: 19#L910-1true assume !false; 82#L95true assume test_~splverifierCounter~0 < 4; 98#L96true test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 23#L104true assume !(0 != test_~tmp~0); 107#L104-1true test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 54#L114true assume !(0 != test_~tmp___0~0); 86#L114-1true test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 77#L124true assume 0 != test_~tmp___2~0; 59#L130-2true assume !(0 != ~pumpRunning~0); 16#L165true assume !(0 != ~systemActive~0); 97#L172true havoc __utac_acc__Specification4_spec__1_#t~ret78, __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_~tmp~8, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~8;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 79#L517true __utac_acc__Specification4_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~8 := __utac_acc__Specification4_spec__1_#t~ret78;havoc __utac_acc__Specification4_spec__1_#t~ret78; 22#L910true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~8); 19#L910-1true [2021-08-27 16:17:32,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:32,669 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:17:32,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:32,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956009729] [2021-08-27 16:17:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:32,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:32,861 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:32,984 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:32,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:32,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1679990654, now seen corresponding path program 1 times [2021-08-27 16:17:32,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:32,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461074679] [2021-08-27 16:17:32,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:32,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,001 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:33,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:33,018 INFO L82 PathProgramCache]: Analyzing trace with hash 34288284, now seen corresponding path program 1 times [2021-08-27 16:17:33,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:33,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910847690] [2021-08-27 16:17:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:33,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:17:33,118 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 16:17:33,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:17:33,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910847690] [2021-08-27 16:17:33,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910847690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:17:33,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:17:33,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:17:33,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737335920] [2021-08-27 16:17:33,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:17:33,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:17:33,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:17:33,222 INFO L87 Difference]: Start difference. First operand has 108 states, 107 states have (on average 1.5420560747663552) internal successors, (165), 107 states have internal predecessors, (165), 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 16:17:33,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:17:33,366 INFO L93 Difference]: Finished difference Result 108 states and 154 transitions. [2021-08-27 16:17:33,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:17:33,367 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 108 states and 154 transitions. [2021-08-27 16:17:33,369 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 67 [2021-08-27 16:17:33,372 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 108 states to 101 states and 147 transitions. [2021-08-27 16:17:33,373 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 101 [2021-08-27 16:17:33,373 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 101 [2021-08-27 16:17:33,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 147 transitions. [2021-08-27 16:17:33,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:17:33,374 INFO L681 BuchiCegarLoop]: Abstraction has 101 states and 147 transitions. [2021-08-27 16:17:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 147 transitions. [2021-08-27 16:17:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-08-27 16:17:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.4554455445544554) internal successors, (147), 100 states have internal predecessors, (147), 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 16:17:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2021-08-27 16:17:33,394 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 147 transitions. [2021-08-27 16:17:33,394 INFO L587 BuchiCegarLoop]: Abstraction has 101 states and 147 transitions. [2021-08-27 16:17:33,394 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:17:33,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101 states and 147 transitions. [2021-08-27 16:17:33,396 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 67 [2021-08-27 16:17:33,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:33,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:33,396 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:33,396 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:17:33,397 INFO L791 eck$LassoCheckResult]: Stem: 333#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~string34.base, #t~string34.offset := #Ultimate.allocOnStack(13);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string36.base, #t~string36.offset, 1);call write~init~int(77, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(101, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(116, #t~string36.base, 3 + #t~string36.offset, 1);call write~init~int(104, #t~string36.base, 4 + #t~string36.offset, 1);call write~init~int(58, #t~string36.base, 5 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 6 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string38.base, #t~string38.offset, 1);call write~init~int(82, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(73, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(84, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 4 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string40.base, #t~string40.offset, 1);call write~init~int(75, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.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(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 297#L-1 havoc main_#res;havoc main_#t~ret32, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 298#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 319#L75 main_#t~ret32 := valid_product_#res;main_~tmp~4 := main_#t~ret32;havoc main_#t~ret32; 267#L418 assume 0 != main_~tmp~4; 268#L395 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, 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; 264#L910-1 [2021-08-27 16:17:33,397 INFO L793 eck$LassoCheckResult]: Loop: 264#L910-1 assume !false; 265#L95 assume test_~splverifierCounter~0 < 4; 330#L96 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 270#L104 assume !(0 != test_~tmp~0); 272#L104-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 310#L114 assume !(0 != test_~tmp___0~0); 291#L114-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 327#L124 assume 0 != test_~tmp___2~0; 314#L130-2 assume !(0 != ~pumpRunning~0); 257#L165 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 258#L223 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 259#L197-1 assume !(0 == ~pumpRunning~0); 260#L172 havoc __utac_acc__Specification4_spec__1_#t~ret78, __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_~tmp~8, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~8;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 328#L517 __utac_acc__Specification4_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~8 := __utac_acc__Specification4_spec__1_#t~ret78;havoc __utac_acc__Specification4_spec__1_#t~ret78; 269#L910 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~8); 264#L910-1 [2021-08-27 16:17:33,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:33,397 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:17:33,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:33,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084900633] [2021-08-27 16:17:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:33,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,418 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:33,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2003597159, now seen corresponding path program 1 times [2021-08-27 16:17:33,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:33,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408110005] [2021-08-27 16:17:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:33,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:17:33,456 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 16:17:33,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:17:33,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408110005] [2021-08-27 16:17:33,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408110005] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:17:33,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:17:33,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:17:33,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086840611] [2021-08-27 16:17:33,457 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:17:33,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:17:33,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:17:33,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:17:33,458 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. cyclomatic complexity: 48 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 16:17:33,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:17:33,505 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2021-08-27 16:17:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:17:33,506 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 195 transitions. [2021-08-27 16:17:33,507 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 98 [2021-08-27 16:17:33,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 142 states and 195 transitions. [2021-08-27 16:17:33,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 142 [2021-08-27 16:17:33,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 142 [2021-08-27 16:17:33,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 195 transitions. [2021-08-27 16:17:33,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:17:33,510 INFO L681 BuchiCegarLoop]: Abstraction has 142 states and 195 transitions. [2021-08-27 16:17:33,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states and 195 transitions. [2021-08-27 16:17:33,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-08-27 16:17:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 142 states have (on average 1.3732394366197183) internal successors, (195), 141 states have internal predecessors, (195), 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 16:17:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2021-08-27 16:17:33,514 INFO L704 BuchiCegarLoop]: Abstraction has 142 states and 195 transitions. [2021-08-27 16:17:33,515 INFO L587 BuchiCegarLoop]: Abstraction has 142 states and 195 transitions. [2021-08-27 16:17:33,515 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:17:33,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 142 states and 195 transitions. [2021-08-27 16:17:33,516 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 98 [2021-08-27 16:17:33,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:17:33,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:17:33,516 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:17:33,516 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] [2021-08-27 16:17:33,516 INFO L791 eck$LassoCheckResult]: Stem: 587#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~string34.base, #t~string34.offset := #Ultimate.allocOnStack(13);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string36.base, #t~string36.offset, 1);call write~init~int(77, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(101, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(116, #t~string36.base, 3 + #t~string36.offset, 1);call write~init~int(104, #t~string36.base, 4 + #t~string36.offset, 1);call write~init~int(58, #t~string36.base, 5 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 6 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string38.base, #t~string38.offset, 1);call write~init~int(82, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(73, #t~string38.base, 2 + #t~string38.offset, 1);call write~init~int(84, #t~string38.base, 3 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 4 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string40.base, #t~string40.offset, 1);call write~init~int(75, #t~string40.base, 1 + #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 2 + #t~string40.offset, 1);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string42.base, #t~string42.offset, 1);call write~init~int(0, #t~string42.base, 1 + #t~string42.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(30);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string63.base, #t~string63.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(21);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(30);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(9);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(25);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(30);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(9);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(25);~pumpRunning~0 := 0;~systemActive~0 := 1;~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 548#L-1 havoc main_#res;havoc main_#t~ret32, main_~retValue_acc~5, main_~tmp~4;havoc main_~retValue_acc~5;havoc main_~tmp~4; 549#L67 havoc valid_product_#res;havoc valid_product_~retValue_acc~1;havoc valid_product_~retValue_acc~1;valid_product_~retValue_acc~1 := 1;valid_product_#res := valid_product_~retValue_acc~1; 570#L75 main_#t~ret32 := valid_product_#res;main_~tmp~4 := main_#t~ret32;havoc main_#t~ret32; 515#L418 assume 0 != main_~tmp~4; 516#L395 havoc test_#t~nondet8, test_#t~nondet9, test_#t~nondet10, test_#t~nondet11, 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; 511#L910-1 [2021-08-27 16:17:33,517 INFO L793 eck$LassoCheckResult]: Loop: 511#L910-1 assume !false; 512#L95 assume test_~splverifierCounter~0 < 4; 583#L96 test_~tmp~0 := test_#t~nondet8;havoc test_#t~nondet8; 518#L104 assume !(0 != test_~tmp~0); 520#L104-1 test_~tmp___0~0 := test_#t~nondet9;havoc test_#t~nondet9; 562#L114 assume !(0 != test_~tmp___0~0); 542#L114-1 test_~tmp___2~0 := test_#t~nondet10;havoc test_#t~nondet10; 580#L124 assume 0 != test_~tmp___2~0; 566#L130-2 assume !(0 != ~pumpRunning~0); 505#L165 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret13, processEnvironment_~tmp~2;havoc processEnvironment_~tmp~2; 506#L223 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret12, processEnvironment__wrappee__highWaterSensor_~tmp~1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~1; 507#L197-1 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret31, isHighWaterLevel_~retValue_acc~4, isHighWaterLevel_~tmp~3, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~4;havoc isHighWaterLevel_~tmp~3;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 508#L525-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 554#L530-1 isHighWaterLevel_#t~ret31 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~3 := isHighWaterLevel_#t~ret31;havoc isHighWaterLevel_#t~ret31; 579#L325-3 assume 0 != isHighWaterLevel_~tmp~3;isHighWaterLevel_~tmp___0~1 := 0; 590#L325-5 isHighWaterLevel_~retValue_acc~4 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~4; 534#L331-1 processEnvironment__wrappee__highWaterSensor_#t~ret12 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~1 := processEnvironment__wrappee__highWaterSensor_#t~ret12;havoc processEnvironment__wrappee__highWaterSensor_#t~ret12; 535#L201-1 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~1); 572#L172 havoc __utac_acc__Specification4_spec__1_#t~ret78, __utac_acc__Specification4_spec__1_#t~ret79, __utac_acc__Specification4_spec__1_~tmp~8, __utac_acc__Specification4_spec__1_~tmp___0~2;havoc __utac_acc__Specification4_spec__1_~tmp~8;havoc __utac_acc__Specification4_spec__1_~tmp___0~2;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~7;havoc getWaterLevel_~retValue_acc~7;getWaterLevel_~retValue_acc~7 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~7; 581#L517 __utac_acc__Specification4_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification4_spec__1_~tmp~8 := __utac_acc__Specification4_spec__1_#t~ret78;havoc __utac_acc__Specification4_spec__1_#t~ret78; 517#L910 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~8); 511#L910-1 [2021-08-27 16:17:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:33,517 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:17:33,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:33,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17634365] [2021-08-27 16:17:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:33,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,538 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,570 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:33,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:33,571 INFO L82 PathProgramCache]: Analyzing trace with hash 456147493, now seen corresponding path program 1 times [2021-08-27 16:17:33,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:33,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824553892] [2021-08-27 16:17:33,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:33,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,575 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,579 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:17:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:17:33,580 INFO L82 PathProgramCache]: Analyzing trace with hash 912218687, now seen corresponding path program 1 times [2021-08-27 16:17:33,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:17:33,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192833448] [2021-08-27 16:17:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:17:33,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:17:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,598 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:17:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:17:33,621 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:18:14,046 WARN L207 SmtUtils]: Spent 40.25 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:18:55,681 WARN L207 SmtUtils]: Spent 20.37 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:18:55,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:18:55 BoogieIcfgContainer [2021-08-27 16:18:55,794 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:18:55,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:18:55,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:18:55,795 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:18:55,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:17:32" (3/4) ... [2021-08-27 16:18:55,798 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:18:55,850 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:18:55,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:18:55,851 INFO L168 Benchmark]: Toolchain (without parser) took 84581.72 ms. Allocated memory was 69.2 MB in the beginning and 132.1 MB in the end (delta: 62.9 MB). Free memory was 50.1 MB in the beginning and 55.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 57.8 MB. Max. memory is 16.1 GB. [2021-08-27 16:18:55,865 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 69.2 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:18:55,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.52 ms. Allocated memory is still 69.2 MB. Free memory was 49.9 MB in the beginning and 45.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:18:55,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.97 ms. Allocated memory is still 69.2 MB. Free memory was 45.5 MB in the beginning and 42.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:18:55,866 INFO L168 Benchmark]: Boogie Preprocessor took 45.61 ms. Allocated memory is still 69.2 MB. Free memory was 42.2 MB in the beginning and 39.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:18:55,866 INFO L168 Benchmark]: RCFGBuilder took 807.24 ms. Allocated memory was 69.2 MB in the beginning and 109.1 MB in the end (delta: 39.8 MB). Free memory was 39.7 MB in the beginning and 70.8 MB in the end (delta: -31.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:18:55,866 INFO L168 Benchmark]: BuchiAutomizer took 83217.07 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 70.8 MB in the beginning and 58.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:18:55,866 INFO L168 Benchmark]: Witness Printer took 56.12 ms. Allocated memory is still 132.1 MB. Free memory was 58.5 MB in the beginning and 55.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:18:55,867 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 69.2 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.52 ms. Allocated memory is still 69.2 MB. Free memory was 49.9 MB in the beginning and 45.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.97 ms. Allocated memory is still 69.2 MB. Free memory was 45.5 MB in the beginning and 42.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.61 ms. Allocated memory is still 69.2 MB. Free memory was 42.2 MB in the beginning and 39.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 807.24 ms. Allocated memory was 69.2 MB in the beginning and 109.1 MB in the end (delta: 39.8 MB). Free memory was 39.7 MB in the beginning and 70.8 MB in the end (delta: -31.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 83217.07 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 70.8 MB in the beginning and 58.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 68.4 MB. Max. memory is 16.1 GB. * Witness Printer took 56.12 ms. Allocated memory is still 132.1 MB. Free memory was 58.5 MB in the beginning and 55.3 MB in the end (delta: 3.2 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 142 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 83.1s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 82.8s. 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 16.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 142 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 298 SDtfs, 557 SDslu, 59 SDs, 0 SdLazy, 38 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 127.3ms 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: 94]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=27407} State at position 1 is {NULL=0, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54b4dc9e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65277040=0, NULL=27407, NULL=56934, NULL=0, NULL=56937, methaneLevelCritical=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@167072bb=0, retValue_acc=0, tmp___1=0, NULL=0, NULL=27408, NULL=56924, cleanupTimeShifts=4, tmp=0, NULL=56922, waterLevel=1, NULL=0, NULL=0, tmp___0=0, \result=1, head=0, pumpRunning=0, retValue_acc=1, NULL=56927, tmp=1, NULL=0, NULL=0, NULL=0, \result=1, NULL=56920, NULL=0, NULL=0, tmp=1, NULL=56936, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64c1219f=0, retValue_acc=1, tmp=1, NULL=0, NULL=56929, NULL=56925, NULL=53729, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@284d6944=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@161f8673=0, head=0, NULL=0, NULL=0, NULL=53728, NULL=56921, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7e94d4f0=0, retValue_acc=0, NULL=0, NULL=56935, NULL=56919, NULL=56931, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@703921af=64, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64ec3f3=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@666bf2b0=0, NULL=0, NULL=0, NULL=0, NULL=56930, tmp=0, NULL=56926, tmp___0=0, NULL=0, systemActive=1, \result=1, \result=0, NULL=27411, NULL=27409, \result=0, NULL=56932, NULL=0, NULL=0, NULL=56923, NULL=27410, retValue_acc=1, tmp___2=64, splverifierCounter=0, NULL=0, NULL=56928, NULL=56938, NULL=0, NULL=0, NULL=27412, NULL=0, NULL=53730, NULL=56933} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L157] int pumpRunning = 0; [L158] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L705] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L409] int retValue_acc ; [L410] int tmp ; [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); [L416] tmp = valid_product() [L418] COND TRUE \read(tmp) [L85] int splverifierCounter ; [L86] int tmp ; [L87] int tmp___0 ; [L88] int tmp___1 ; [L89] int tmp___2 ; [L92] splverifierCounter = 0 Loop: [L94] COND TRUE 1 [L96] COND TRUE splverifierCounter < 4 [L102] tmp = __VERIFIER_nondet_int() [L104] COND FALSE !(\read(tmp)) [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND TRUE \read(tmp___2) [L165] COND FALSE !(\read(pumpRunning)) [L172] COND TRUE \read(systemActive) [L220] int tmp ; [L223] COND FALSE !(\read(pumpRunning)) [L194] int tmp ; [L197] COND TRUE ! pumpRunning [L317] int retValue_acc ; [L318] int tmp ; [L319] int tmp___0 ; [L522] int retValue_acc ; [L525] COND TRUE waterLevel < 2 [L526] retValue_acc = 1 [L527] return (retValue_acc); [L323] tmp = isHighWaterSensorDry() [L325] COND TRUE \read(tmp) [L326] tmp___0 = 0 [L330] retValue_acc = tmp___0 [L331] return (retValue_acc); [L199] tmp = isHighWaterLevel() [L201] COND FALSE !(\read(tmp)) [L903] int tmp ; [L904] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L908] tmp = getWaterLevel() [L910] COND FALSE !(tmp == 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:18:55,915 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...