./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product18.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_spec3_product18.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 e775674397a9c2f1915fc4aeec4057e4316f59fc 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:08:35,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:08:35,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:08:35,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:08:35,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:08:35,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:08:35,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:08:35,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:08:35,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:08:35,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:08:35,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:08:35,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:08:35,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:08:35,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:08:35,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:08:35,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:08:35,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:08:35,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:08:35,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:08:35,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:08:35,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:08:35,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:08:35,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:08:35,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:08:35,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:08:35,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:08:35,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:08:35,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:08:35,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:08:35,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:08:35,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:08:35,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:08:35,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:08:35,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:08:35,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:08:35,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:08:35,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:08:35,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:08:35,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:08:35,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:08:35,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:08:35,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:08:35,921 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:08:35,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:08:35,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:08:35,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:08:35,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:08:35,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:08:35,924 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:08:35,924 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:08:35,924 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:08:35,924 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:08:35,925 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:08:35,925 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:08:35,925 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:08:35,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:08:35,926 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:08:35,926 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:08:35,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:08:35,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:08:35,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:08:35,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:08:35,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:08:35,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:08:35,927 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:08:35,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:08:35,927 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:08:35,927 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:08:35,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:08:35,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:08:35,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:08:35,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:08:35,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:08:35,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:08:35,929 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:08:35,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e775674397a9c2f1915fc4aeec4057e4316f59fc [2021-08-27 16:08:36,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:08:36,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:08:36,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:08:36,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:08:36,199 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:08:36,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product18.cil.c [2021-08-27 16:08:36,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4a5e9b92/e0864ad77ca74e1ab64723ef7ab055db/FLAG025331509 [2021-08-27 16:08:36,580 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:08:36,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product18.cil.c [2021-08-27 16:08:36,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4a5e9b92/e0864ad77ca74e1ab64723ef7ab055db/FLAG025331509 [2021-08-27 16:08:36,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4a5e9b92/e0864ad77ca74e1ab64723ef7ab055db [2021-08-27 16:08:36,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:08:36,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:08:36,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:08:36,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:08:36,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:08:36,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:08:36" (1/1) ... [2021-08-27 16:08:36,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27588970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:36, skipping insertion in model container [2021-08-27 16:08:36,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:08:36" (1/1) ... [2021-08-27 16:08:36,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:08:37,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:08:37,219 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_spec3_product18.cil.c[17464,17477] [2021-08-27 16:08:37,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:08:37,226 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:08:37,279 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_spec3_product18.cil.c[17464,17477] [2021-08-27 16:08:37,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:08:37,290 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:08:37,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37 WrapperNode [2021-08-27 16:08:37,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:08:37,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:08:37,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:08:37,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:08:37,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:08:37,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:08:37,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:08:37,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:08:37,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:08:37,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:08:37,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:08:37,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:08:37,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (1/1) ... [2021-08-27 16:08:37,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:08:37,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:08:37,370 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 16:08:37,373 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 16:08:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:08:37,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:08:37,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:08:37,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:08:38,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:08:38,019 INFO L299 CfgBuilder]: Removed 104 assume(true) statements. [2021-08-27 16:08:38,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:08:38 BoogieIcfgContainer [2021-08-27 16:08:38,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:08:38,021 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:08:38,021 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:08:38,023 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:08:38,023 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:08:38,023 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:08:36" (1/3) ... [2021-08-27 16:08:38,024 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12cfec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:08:38, skipping insertion in model container [2021-08-27 16:08:38,024 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:08:38,024 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:08:37" (2/3) ... [2021-08-27 16:08:38,025 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12cfec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:08:38, skipping insertion in model container [2021-08-27 16:08:38,025 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:08:38,025 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:08:38" (3/3) ... [2021-08-27 16:08:38,025 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product18.cil.c [2021-08-27 16:08:38,052 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:08:38,052 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:08:38,052 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:08:38,052 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:08:38,052 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:08:38,053 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:08:38,053 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:08:38,053 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:08:38,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 77 states have internal predecessors, (117), 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 16:08:38,079 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-08-27 16:08:38,080 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:38,080 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:38,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:38,087 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:38,087 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:08:38,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 77 states have internal predecessors, (117), 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 16:08:38,099 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-08-27 16:08:38,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:38,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:38,101 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:38,101 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:38,109 INFO L791 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(13);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string62.base, #t~string62.offset, 1);call write~init~int(80, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(117, #t~string62.base, 2 + #t~string62.offset, 1);call write~init~int(109, #t~string62.base, 3 + #t~string62.offset, 1);call write~init~int(112, #t~string62.base, 4 + #t~string62.offset, 1);call write~init~int(58, #t~string62.base, 5 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 6 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string68.base, #t~string68.offset, 1);call write~init~int(32, #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(2);call write~init~int(10, #t~string70.base, #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 1 + #t~string70.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 52#L-1true havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 53#L860true 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; 38#L868true main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 72#L132true assume 0 != main_~tmp~0; 31#L105true havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 12#L889-1true [2021-08-27 16:08:38,110 INFO L793 eck$LassoCheckResult]: Loop: 12#L889-1true assume !false; 69#L782true assume test_~splverifierCounter~0 < 4; 21#L783true test_~tmp~6 := test_#t~nondet72;havoc test_#t~nondet72; 45#L791true assume !(0 != test_~tmp~6); 39#L791-1true test_~tmp___0~1 := test_#t~nondet73;havoc test_#t~nondet73; 59#L801true assume !(0 != test_~tmp___0~1); 56#L801-1true test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 17#L811true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 49#L819-2true assume !(0 != ~pumpRunning~0); 65#L618true assume !(0 != ~systemActive~0); 70#L625true havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 40#L194true __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 48#L883true assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 12#L889-1true [2021-08-27 16:08:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:38,118 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 1 times [2021-08-27 16:08:38,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:38,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681806437] [2021-08-27 16:08:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:38,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:38,308 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:38,413 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:38,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1680729482, now seen corresponding path program 1 times [2021-08-27 16:08:38,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:38,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903276871] [2021-08-27 16:08:38,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:38,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:08:38,485 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 16:08:38,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:08:38,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903276871] [2021-08-27 16:08:38,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903276871] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:08:38,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:08:38,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:08:38,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903854338] [2021-08-27 16:08:38,490 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:08:38,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:08:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:08:38,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:08:38,501 INFO L87 Difference]: Start difference. First operand has 78 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 77 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:08:38,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:08:38,534 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2021-08-27 16:08:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:08:38,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 107 transitions. [2021-08-27 16:08:38,543 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:08:38,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 71 states and 99 transitions. [2021-08-27 16:08:38,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2021-08-27 16:08:38,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2021-08-27 16:08:38,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 99 transitions. [2021-08-27 16:08:38,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:08:38,549 INFO L681 BuchiCegarLoop]: Abstraction has 71 states and 99 transitions. [2021-08-27 16:08:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 99 transitions. [2021-08-27 16:08:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-27 16:08:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 70 states have internal predecessors, (99), 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 16:08:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2021-08-27 16:08:38,575 INFO L704 BuchiCegarLoop]: Abstraction has 71 states and 99 transitions. [2021-08-27 16:08:38,575 INFO L587 BuchiCegarLoop]: Abstraction has 71 states and 99 transitions. [2021-08-27 16:08:38,575 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:08:38,575 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 99 transitions. [2021-08-27 16:08:38,579 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 47 [2021-08-27 16:08:38,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:38,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:38,580 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:38,580 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:38,580 INFO L791 eck$LassoCheckResult]: Stem: 233#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(13);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string62.base, #t~string62.offset, 1);call write~init~int(80, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(117, #t~string62.base, 2 + #t~string62.offset, 1);call write~init~int(109, #t~string62.base, 3 + #t~string62.offset, 1);call write~init~int(112, #t~string62.base, 4 + #t~string62.offset, 1);call write~init~int(58, #t~string62.base, 5 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 6 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string68.base, #t~string68.offset, 1);call write~init~int(32, #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(2);call write~init~int(10, #t~string70.base, #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 1 + #t~string70.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 230#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 231#L860 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; 215#L868 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 216#L132 assume 0 != main_~tmp~0; 207#L105 havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 179#L889-1 [2021-08-27 16:08:38,581 INFO L793 eck$LassoCheckResult]: Loop: 179#L889-1 assume !false; 180#L782 assume test_~splverifierCounter~0 < 4; 198#L783 test_~tmp~6 := test_#t~nondet72;havoc test_#t~nondet72; 199#L791 assume !(0 != test_~tmp~6); 217#L791-1 test_~tmp___0~1 := test_#t~nondet73;havoc test_#t~nondet73; 218#L801 assume !(0 != test_~tmp___0~1); 214#L801-1 test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 191#L811 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 192#L819-2 assume !(0 != ~pumpRunning~0); 183#L618 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret53, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 224#L650 assume !(0 != ~pumpRunning~0); 226#L625 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 219#L194 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 220#L883 assume 0 != __utac_acc__Specification3_spec__1_~tmp~7; 179#L889-1 [2021-08-27 16:08:38,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:38,582 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 2 times [2021-08-27 16:08:38,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:38,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786125541] [2021-08-27 16:08:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:38,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:38,622 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:38,706 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:38,709 INFO L82 PathProgramCache]: Analyzing trace with hash -589998930, now seen corresponding path program 1 times [2021-08-27 16:08:38,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:38,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719197317] [2021-08-27 16:08:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:38,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:38,715 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:38,721 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:38,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:38,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1013040596, now seen corresponding path program 1 times [2021-08-27 16:08:38,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:38,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850230764] [2021-08-27 16:08:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:38,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:08:38,791 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 16:08:38,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:08:38,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850230764] [2021-08-27 16:08:38,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850230764] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:08:38,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:08:38,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:08:38,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785570611] [2021-08-27 16:08:39,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:08:39,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:08:39,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:08:39,076 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. cyclomatic complexity: 30 Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 16:08:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:08:39,262 INFO L93 Difference]: Finished difference Result 241 states and 345 transitions. [2021-08-27 16:08:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 16:08:39,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 241 states and 345 transitions. [2021-08-27 16:08:39,265 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 168 [2021-08-27 16:08:39,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 241 states to 241 states and 345 transitions. [2021-08-27 16:08:39,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 241 [2021-08-27 16:08:39,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 241 [2021-08-27 16:08:39,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 241 states and 345 transitions. [2021-08-27 16:08:39,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:08:39,272 INFO L681 BuchiCegarLoop]: Abstraction has 241 states and 345 transitions. [2021-08-27 16:08:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states and 345 transitions. [2021-08-27 16:08:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 136. [2021-08-27 16:08:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 135 states have internal predecessors, (188), 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 16:08:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 188 transitions. [2021-08-27 16:08:39,286 INFO L704 BuchiCegarLoop]: Abstraction has 136 states and 188 transitions. [2021-08-27 16:08:39,286 INFO L587 BuchiCegarLoop]: Abstraction has 136 states and 188 transitions. [2021-08-27 16:08:39,286 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:08:39,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 136 states and 188 transitions. [2021-08-27 16:08:39,288 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 94 [2021-08-27 16:08:39,288 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:08:39,288 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:08:39,289 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-08-27 16:08:39,289 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:08:39,290 INFO L791 eck$LassoCheckResult]: Stem: 579#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~string9.base, #t~string9.offset := #Ultimate.allocOnStack(13);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string11.base, #t~string11.offset, 1);call write~init~int(77, #t~string11.base, 1 + #t~string11.offset, 1);call write~init~int(101, #t~string11.base, 2 + #t~string11.offset, 1);call write~init~int(116, #t~string11.base, 3 + #t~string11.offset, 1);call write~init~int(104, #t~string11.base, 4 + #t~string11.offset, 1);call write~init~int(58, #t~string11.base, 5 + #t~string11.offset, 1);call write~init~int(0, #t~string11.base, 6 + #t~string11.offset, 1);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string13.base, #t~string13.offset, 1);call write~init~int(82, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(73, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(84, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 4 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string15.base, #t~string15.offset, 1);call write~init~int(75, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 2 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string17.base, #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 1 + #t~string17.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(30);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(9);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(21);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(30);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(9);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(21);call #t~string45.base, #t~string45.offset := #Ultimate.allocOnStack(30);call #t~string46.base, #t~string46.offset := #Ultimate.allocOnStack(9);call #t~string47.base, #t~string47.offset := #Ultimate.allocOnStack(25);call #t~string48.base, #t~string48.offset := #Ultimate.allocOnStack(30);call #t~string49.base, #t~string49.offset := #Ultimate.allocOnStack(9);call #t~string50.base, #t~string50.offset := #Ultimate.allocOnStack(25);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(13);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string58.base, #t~string58.offset, 1);call write~init~int(110, #t~string58.base, 1 + #t~string58.offset, 1);call write~init~int(0, #t~string58.base, 2 + #t~string58.offset, 1);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string60.base, #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 1 + #t~string60.offset, 1);call write~init~int(102, #t~string60.base, 2 + #t~string60.offset, 1);call write~init~int(0, #t~string60.base, 3 + #t~string60.offset, 1);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string62.base, #t~string62.offset, 1);call write~init~int(80, #t~string62.base, 1 + #t~string62.offset, 1);call write~init~int(117, #t~string62.base, 2 + #t~string62.offset, 1);call write~init~int(109, #t~string62.base, 3 + #t~string62.offset, 1);call write~init~int(112, #t~string62.base, 4 + #t~string62.offset, 1);call write~init~int(58, #t~string62.base, 5 + #t~string62.offset, 1);call write~init~int(0, #t~string62.base, 6 + #t~string62.offset, 1);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string64.base, #t~string64.offset, 1);call write~init~int(110, #t~string64.base, 1 + #t~string64.offset, 1);call write~init~int(0, #t~string64.base, 2 + #t~string64.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string66.base, #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 1 + #t~string66.offset, 1);call write~init~int(102, #t~string66.base, 2 + #t~string66.offset, 1);call write~init~int(0, #t~string66.base, 3 + #t~string66.offset, 1);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string68.base, #t~string68.offset, 1);call write~init~int(32, #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(2);call write~init~int(10, #t~string70.base, #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 1 + #t~string70.offset, 1);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 570#L-1 havoc main_#res;havoc main_#t~ret7, main_~retValue_acc~0, main_~tmp~0;havoc main_~retValue_acc~0;havoc main_~tmp~0; 571#L860 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; 551#L868 main_#t~ret7 := valid_product_#res;main_~tmp~0 := main_#t~ret7;havoc main_#t~ret7; 552#L132 assume 0 != main_~tmp~0; 541#L105 havoc test_#t~nondet72, test_#t~nondet73, test_#t~nondet74, test_#t~nondet75, test_~splverifierCounter~0, test_~tmp~6, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~6;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 542#L889-1 [2021-08-27 16:08:39,290 INFO L793 eck$LassoCheckResult]: Loop: 542#L889-1 assume !false; 610#L782 assume test_~splverifierCounter~0 < 4; 611#L783 test_~tmp~6 := test_#t~nondet72;havoc test_#t~nondet72; 630#L791 assume !(0 != test_~tmp~6); 628#L791-1 test_~tmp___0~1 := test_#t~nondet73;havoc test_#t~nondet73; 627#L801 assume !(0 != test_~tmp___0~1); 626#L801-1 test_~tmp___2~0 := test_#t~nondet74;havoc test_#t~nondet74; 625#L811 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 620#L819-2 assume !(0 != ~pumpRunning~0); 618#L618 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret53, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 616#L650 assume !(0 != ~pumpRunning~0); 614#L625 havoc __utac_acc__Specification3_spec__1_#t~ret77, __utac_acc__Specification3_spec__1_#t~ret78, __utac_acc__Specification3_spec__1_#t~ret79, __utac_acc__Specification3_spec__1_~tmp~7, __utac_acc__Specification3_spec__1_~tmp___0~2, __utac_acc__Specification3_spec__1_~tmp___1~1;havoc __utac_acc__Specification3_spec__1_~tmp~7;havoc __utac_acc__Specification3_spec__1_~tmp___0~2;havoc __utac_acc__Specification3_spec__1_~tmp___1~1;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~1;havoc isMethaneLevelCritical_~retValue_acc~1;isMethaneLevelCritical_~retValue_acc~1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~1; 555#L194 __utac_acc__Specification3_spec__1_#t~ret77 := isMethaneLevelCritical_#res;__utac_acc__Specification3_spec__1_~tmp~7 := __utac_acc__Specification3_spec__1_#t~ret77;havoc __utac_acc__Specification3_spec__1_#t~ret77; 556#L883 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~7);havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~2;havoc getWaterLevel_~retValue_acc~2;getWaterLevel_~retValue_acc~2 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~2; 528#L226 __utac_acc__Specification3_spec__1_#t~ret78 := getWaterLevel_#res;__utac_acc__Specification3_spec__1_~tmp___0~2 := __utac_acc__Specification3_spec__1_#t~ret78;havoc __utac_acc__Specification3_spec__1_#t~ret78; 529#L889 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~2); 542#L889-1 [2021-08-27 16:08:39,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:39,290 INFO L82 PathProgramCache]: Analyzing trace with hash 889506727, now seen corresponding path program 3 times [2021-08-27 16:08:39,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:39,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731737821] [2021-08-27 16:08:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:39,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:39,348 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:39,407 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:39,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:39,408 INFO L82 PathProgramCache]: Analyzing trace with hash -53282720, now seen corresponding path program 1 times [2021-08-27 16:08:39,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:39,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497784392] [2021-08-27 16:08:39,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:39,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:39,413 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:39,418 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:08:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:08:39,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1425557498, now seen corresponding path program 1 times [2021-08-27 16:08:39,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:08:39,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763145394] [2021-08-27 16:08:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:08:39,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:08:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:39,453 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:08:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:08:39,497 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:09:19,022 WARN L207 SmtUtils]: Spent 39.24 s on a formula simplification. DAG size of input: 491 DAG size of output: 433 [2021-08-27 16:09:59,586 WARN L207 SmtUtils]: Spent 19.66 s on a formula simplification that was a NOOP. DAG size: 433 [2021-08-27 16:09:59,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:09:59 BoogieIcfgContainer [2021-08-27 16:09:59,719 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:09:59,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:09:59,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:09:59,720 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:09:59,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:08:38" (3/4) ... [2021-08-27 16:09:59,721 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:09:59,783 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:09:59,784 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:09:59,785 INFO L168 Benchmark]: Toolchain (without parser) took 82814.05 ms. Allocated memory was 60.8 MB in the beginning and 119.5 MB in the end (delta: 58.7 MB). Free memory was 44.0 MB in the beginning and 49.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,785 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 26.8 MB in the beginning and 26.8 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:09:59,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.39 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 37.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,786 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 60.8 MB. Free memory was 36.9 MB in the beginning and 34.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,790 INFO L168 Benchmark]: Boogie Preprocessor took 18.17 ms. Allocated memory is still 60.8 MB. Free memory was 34.1 MB in the beginning and 32.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,790 INFO L168 Benchmark]: RCFGBuilder took 666.20 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 40.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,790 INFO L168 Benchmark]: BuchiAutomizer took 81698.07 ms. Allocated memory was 75.5 MB in the beginning and 119.5 MB in the end (delta: 44.0 MB). Free memory was 40.8 MB in the beginning and 51.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:09:59,790 INFO L168 Benchmark]: Witness Printer took 64.91 ms. Allocated memory is still 119.5 MB. Free memory was 51.3 MB in the beginning and 49.2 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:09:59,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 46.1 MB. Free memory was 26.8 MB in the beginning and 26.8 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.39 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 37.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.11 ms. Allocated memory is still 60.8 MB. Free memory was 36.9 MB in the beginning and 34.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.17 ms. Allocated memory is still 60.8 MB. Free memory was 34.1 MB in the beginning and 32.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 666.20 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 40.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 81698.07 ms. Allocated memory was 75.5 MB in the beginning and 119.5 MB in the end (delta: 44.0 MB). Free memory was 40.8 MB in the beginning and 51.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. * Witness Printer took 64.91 ms. Allocated memory is still 119.5 MB. Free memory was 51.3 MB in the beginning and 49.2 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 5 locations. The remainder module has 136 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 81.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 81.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 31.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 105 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 136 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 239 SDtfs, 466 SDslu, 400 SDs, 0 SdLazy, 46 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.8ms 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: 781]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=9234} State at position 1 is {NULL=9252, retValue_acc=0, NULL=0, NULL=0, NULL=0, NULL=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69b6dbef=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@412ec09d=0, NULL=9234, NULL=9255, NULL=0, NULL=0, NULL=0, NULL=0, NULL=9247, NULL=9236, NULL=9238, NULL=9263, methaneLevelCritical=0, NULL=9259, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@56912277=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13f4febe=0, NULL=9243, NULL=0, tmp=0, NULL=0, NULL=9239, tmp___1=0, NULL=0, NULL=0, NULL=9246, NULL=9242, cleanupTimeShifts=4, NULL=9262, NULL=9245, NULL=9249, tmp=0, tmp___0=1, NULL=0, systemActive=1, waterLevel=1, \result=1, NULL=0, NULL=9248, NULL=0, NULL=9254, NULL=0, retValue_acc=1, NULL=9237, NULL=0, NULL=0, NULL=9251, \result=1, head=0, pumpRunning=0, tmp=1, NULL=9253, \result=0, NULL=0, NULL=9235, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@790eef3d=0, NULL=0, NULL=9256, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@238da466=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3dd06f00=66, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f39194=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2b88bcde=0, NULL=9257, tmp___2=66, tmp___0=0, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=9260, NULL=9258, NULL=9240, tmp___1=0, head=0, tmp=0, NULL=0, NULL=0, NULL=9261, NULL=0, NULL=0, NULL=9264, NULL=9250, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L42] int cleanupTimeShifts = 4; [L151] int waterLevel = 1; [L152] int methaneLevelCritical = 0; [L409] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L610] int pumpRunning = 0; [L611] int systemActive = 1; [L123] int retValue_acc ; [L124] int tmp ; [L864] int retValue_acc ; [L867] retValue_acc = 1 [L868] return (retValue_acc); [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L772] int splverifierCounter ; [L773] int tmp ; [L774] int tmp___0 ; [L775] int tmp___1 ; [L776] int tmp___2 ; [L779] splverifierCounter = 0 Loop: [L781] COND TRUE 1 [L783] COND TRUE splverifierCounter < 4 [L789] tmp = __VERIFIER_nondet_int() [L791] COND FALSE !(\read(tmp)) [L799] tmp___0 = __VERIFIER_nondet_int() [L801] COND FALSE !(\read(tmp___0)) [L809] tmp___2 = __VERIFIER_nondet_int() [L811] COND TRUE \read(tmp___2) [L766] systemActive = 1 [L618] COND FALSE !(\read(pumpRunning)) [L625] COND TRUE \read(systemActive) [L647] int tmp ; [L650] COND FALSE !(\read(pumpRunning)) [L875] int tmp ; [L876] int tmp___0 ; [L877] int tmp___1 ; [L190] int retValue_acc ; [L193] retValue_acc = methaneLevelCritical [L194] return (retValue_acc); [L881] tmp = isMethaneLevelCritical() [L883] COND FALSE !(\read(tmp)) [L222] int retValue_acc ; [L225] retValue_acc = waterLevel [L226] return (retValue_acc); [L887] tmp___0 = getWaterLevel() [L889] COND FALSE !(tmp___0 == 2) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:09:59,850 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...