./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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_product40.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 7e5f42a5bbc52e8ca75c0ac5e2c6aad044a3ab94096d236f597eae12e8fb5e5c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 10:00:38,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 10:00:38,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 10:00:38,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 10:00:38,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 10:00:38,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 10:00:38,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 10:00:38,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 10:00:38,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 10:00:38,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 10:00:38,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 10:00:38,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 10:00:38,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 10:00:38,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 10:00:38,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 10:00:38,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 10:00:38,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 10:00:38,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 10:00:38,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 10:00:38,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 10:00:38,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 10:00:38,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 10:00:38,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 10:00:38,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 10:00:38,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 10:00:38,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 10:00:38,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 10:00:38,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 10:00:38,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 10:00:38,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 10:00:38,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 10:00:38,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 10:00:38,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 10:00:38,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 10:00:38,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 10:00:38,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 10:00:38,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 10:00:38,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 10:00:38,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 10:00:38,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 10:00:38,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 10:00:38,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-16 10:00:38,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 10:00:38,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 10:00:38,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 10:00:38,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 10:00:38,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 10:00:38,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 10:00:38,329 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 10:00:38,329 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-16 10:00:38,329 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-16 10:00:38,329 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-16 10:00:38,330 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-16 10:00:38,330 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-16 10:00:38,330 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-16 10:00:38,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 10:00:38,331 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 10:00:38,331 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 10:00:38,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 10:00:38,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 10:00:38,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 10:00:38,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-16 10:00:38,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-16 10:00:38,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-16 10:00:38,332 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 10:00:38,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 10:00:38,333 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-16 10:00:38,333 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 10:00:38,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-16 10:00:38,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 10:00:38,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 10:00:38,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 10:00:38,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 10:00:38,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 10:00:38,335 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-16 10:00:38,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5f42a5bbc52e8ca75c0ac5e2c6aad044a3ab94096d236f597eae12e8fb5e5c [2021-12-16 10:00:38,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 10:00:38,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 10:00:38,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 10:00:38,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 10:00:38,584 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 10:00:38,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2021-12-16 10:00:38,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a59b6e65/3e7fb95b5955471182585fc3a03c80d5/FLAG114a29aeb [2021-12-16 10:00:39,136 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 10:00:39,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2021-12-16 10:00:39,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a59b6e65/3e7fb95b5955471182585fc3a03c80d5/FLAG114a29aeb [2021-12-16 10:00:39,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a59b6e65/3e7fb95b5955471182585fc3a03c80d5 [2021-12-16 10:00:39,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 10:00:39,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 10:00:39,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 10:00:39,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 10:00:39,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 10:00:39,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:00:39" (1/1) ... [2021-12-16 10:00:39,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40157f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:39, skipping insertion in model container [2021-12-16 10:00:39,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:00:39" (1/1) ... [2021-12-16 10:00:39,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 10:00:39,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 10:00:39,884 WARN L230 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_product40.cil.c[3936,3949] [2021-12-16 10:00:39,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 10:00:40,002 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 10:00:40,032 WARN L230 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_product40.cil.c[3936,3949] [2021-12-16 10:00:40,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 10:00:40,101 INFO L208 MainTranslator]: Completed translation [2021-12-16 10:00:40,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40 WrapperNode [2021-12-16 10:00:40,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 10:00:40,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 10:00:40,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 10:00:40,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 10:00:40,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,175 INFO L137 Inliner]: procedures = 55, calls = 157, calls flagged for inlining = 54, calls inlined = 83, statements flattened = 624 [2021-12-16 10:00:40,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 10:00:40,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 10:00:40,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 10:00:40,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 10:00:40,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 10:00:40,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 10:00:40,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 10:00:40,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 10:00:40,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (1/1) ... [2021-12-16 10:00:40,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-16 10:00:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 10:00:40,280 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) [2021-12-16 10:00:40,303 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 [2021-12-16 10:00:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 10:00:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 10:00:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 10:00:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 10:00:40,401 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 10:00:40,403 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 10:00:40,773 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 10:00:40,780 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 10:00:40,780 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 10:00:40,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:00:40 BoogieIcfgContainer [2021-12-16 10:00:40,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 10:00:40,783 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-16 10:00:40,783 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-16 10:00:40,786 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-16 10:00:40,787 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 10:00:40,787 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.12 10:00:39" (1/3) ... [2021-12-16 10:00:40,788 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f39bc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 10:00:40, skipping insertion in model container [2021-12-16 10:00:40,788 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 10:00:40,788 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:00:40" (2/3) ... [2021-12-16 10:00:40,789 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f39bc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.12 10:00:40, skipping insertion in model container [2021-12-16 10:00:40,789 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-16 10:00:40,789 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:00:40" (3/3) ... [2021-12-16 10:00:40,790 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2021-12-16 10:00:40,825 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-16 10:00:40,825 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-16 10:00:40,826 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-16 10:00:40,826 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-16 10:00:40,826 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-16 10:00:40,826 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-16 10:00:40,826 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-16 10:00:40,826 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-16 10:00:40,842 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 167 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 166 states have internal predecessors, (228), 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) [2021-12-16 10:00:40,879 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 109 [2021-12-16 10:00:40,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 10:00:40,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 10:00:40,885 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:40,886 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:40,886 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-16 10:00:40,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 167 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 166 states have internal predecessors, (228), 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) [2021-12-16 10:00:40,900 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 109 [2021-12-16 10:00:40,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 10:00:40,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 10:00:40,901 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:40,901 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:40,907 INFO L791 eck$LassoCheckResult]: Stem: 150#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 41#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 45#L176true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 64#L169true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~2#1;havoc valid_product_~retValue_acc~2#1;valid_product_~retValue_acc~2#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~2#1; 102#L184true main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 59#L140true assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 140#L113true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~2#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 16#L548-2true [2021-12-16 10:00:40,908 INFO L793 eck$LassoCheckResult]: Loop: 16#L548-2true assume !false; 50#L549true assume test_~splverifierCounter~0#1 < 4; 166#L550true test_~tmp~5#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 161#L558true assume !(0 != test_~tmp~5#1); 154#L558-2true test_~tmp___0~2#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 167#L568true assume !(0 != test_~tmp___0~2#1); 34#L568-2true test_~tmp___2~0#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 47#L578true assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 124#L586true assume !(0 != test_~tmp___1~1#1); 162#L586-2true assume { :begin_inline_timeShift } true; 32#L344true assume !(0 != ~pumpRunning~0); 84#L344-2true assume !(0 != ~systemActive~0); 27#L351-1true assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_#t~ret7#1, __utac_acc__Specification3_spec__1_#t~ret8#1, __utac_acc__Specification3_spec__1_~tmp~1#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~1#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 73#L282-1true __utac_acc__Specification3_spec__1_#t~ret6#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~1#1 := __utac_acc__Specification3_spec__1_#t~ret6#1;havoc __utac_acc__Specification3_spec__1_#t~ret6#1; 106#L202true assume 0 != __utac_acc__Specification3_spec__1_~tmp~1#1; 54#L208-1true assume { :end_inline___utac_acc__Specification3_spec__1 } true; 82#L361true assume { :end_inline_timeShift } true; 16#L548-2true [2021-12-16 10:00:40,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:40,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-12-16 10:00:40,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:40,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599119509] [2021-12-16 10:00:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:40,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,035 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 10:00:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,078 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 10:00:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:41,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1109555423, now seen corresponding path program 1 times [2021-12-16 10:00:41,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:41,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289654439] [2021-12-16 10:00:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:41,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,096 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 10:00:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,111 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 10:00:41,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:41,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2041237027, now seen corresponding path program 1 times [2021-12-16 10:00:41,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:41,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172509083] [2021-12-16 10:00:41,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:41,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 10:00:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 10:00:41,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 10:00:41,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172509083] [2021-12-16 10:00:41,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172509083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 10:00:41,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 10:00:41,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 10:00:41,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267804236] [2021-12-16 10:00:41,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 10:00:41,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 10:00:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 10:00:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 10:00:41,464 INFO L87 Difference]: Start difference. First operand has 167 states, 166 states have (on average 1.3734939759036144) internal successors, (228), 166 states have internal predecessors, (228), 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 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-12-16 10:00:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 10:00:41,608 INFO L93 Difference]: Finished difference Result 546 states and 719 transitions. [2021-12-16 10:00:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 10:00:41,613 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 546 states and 719 transitions. [2021-12-16 10:00:41,624 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 356 [2021-12-16 10:00:41,635 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 546 states to 506 states and 679 transitions. [2021-12-16 10:00:41,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 506 [2021-12-16 10:00:41,638 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 506 [2021-12-16 10:00:41,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 506 states and 679 transitions. [2021-12-16 10:00:41,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 10:00:41,646 INFO L681 BuchiCegarLoop]: Abstraction has 506 states and 679 transitions. [2021-12-16 10:00:41,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states and 679 transitions. [2021-12-16 10:00:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 212. [2021-12-16 10:00:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 212 states have (on average 1.3396226415094339) internal successors, (284), 211 states have internal predecessors, (284), 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) [2021-12-16 10:00:41,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 284 transitions. [2021-12-16 10:00:41,695 INFO L704 BuchiCegarLoop]: Abstraction has 212 states and 284 transitions. [2021-12-16 10:00:41,695 INFO L587 BuchiCegarLoop]: Abstraction has 212 states and 284 transitions. [2021-12-16 10:00:41,695 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-16 10:00:41,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 212 states and 284 transitions. [2021-12-16 10:00:41,697 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 149 [2021-12-16 10:00:41,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 10:00:41,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 10:00:41,698 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:41,698 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:41,699 INFO L791 eck$LassoCheckResult]: Stem: 880#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 800#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 801#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 807#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~2#1;havoc valid_product_~retValue_acc~2#1;valid_product_~retValue_acc~2#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~2#1; 830#L184 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 825#L140 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 826#L113 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~2#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 757#L548-2 [2021-12-16 10:00:41,699 INFO L793 eck$LassoCheckResult]: Loop: 757#L548-2 assume !false; 758#L549 assume test_~splverifierCounter~0#1 < 4; 813#L550 test_~tmp~5#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 884#L558 assume !(0 != test_~tmp~5#1); 806#L558-2 test_~tmp___0~2#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 882#L568 assume !(0 != test_~tmp___0~2#1); 791#L568-2 test_~tmp___2~0#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 792#L578 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 808#L586 assume !(0 != test_~tmp___1~1#1); 866#L586-2 assume { :begin_inline_timeShift } true; 787#L344 assume !(0 != ~pumpRunning~0); 788#L344-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~3#1;havoc processEnvironment_~tmp~3#1; 851#L402 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 743#L376-2 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 744#L368-3 assume { :end_inline_processEnvironment__wrappee__base } true; 848#L376-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 741#L402-1 assume { :end_inline_processEnvironment } true; 742#L351-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_#t~ret7#1, __utac_acc__Specification3_spec__1_#t~ret8#1, __utac_acc__Specification3_spec__1_~tmp~1#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~1#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 781#L282-1 __utac_acc__Specification3_spec__1_#t~ret6#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~1#1 := __utac_acc__Specification3_spec__1_#t~ret6#1;havoc __utac_acc__Specification3_spec__1_#t~ret6#1; 843#L202 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1#1; 819#L208-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 820#L361 assume { :end_inline_timeShift } true; 757#L548-2 [2021-12-16 10:00:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-12-16 10:00:41,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:41,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102276883] [2021-12-16 10:00:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:41,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,739 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 10:00:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,760 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 10:00:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:41,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1941547735, now seen corresponding path program 1 times [2021-12-16 10:00:41,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:41,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739086293] [2021-12-16 10:00:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:41,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 10:00:41,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 10:00:41,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 10:00:41,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739086293] [2021-12-16 10:00:41,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739086293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 10:00:41,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 10:00:41,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 10:00:41,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964585037] [2021-12-16 10:00:41,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 10:00:41,785 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-16 10:00:41,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 10:00:41,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 10:00:41,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 10:00:41,787 INFO L87 Difference]: Start difference. First operand 212 states and 284 transitions. cyclomatic complexity: 75 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-16 10:00:41,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 10:00:41,845 INFO L93 Difference]: Finished difference Result 269 states and 345 transitions. [2021-12-16 10:00:41,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 10:00:41,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 269 states and 345 transitions. [2021-12-16 10:00:41,848 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 193 [2021-12-16 10:00:41,849 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 269 states to 269 states and 345 transitions. [2021-12-16 10:00:41,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 269 [2021-12-16 10:00:41,850 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 269 [2021-12-16 10:00:41,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 269 states and 345 transitions. [2021-12-16 10:00:41,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 10:00:41,850 INFO L681 BuchiCegarLoop]: Abstraction has 269 states and 345 transitions. [2021-12-16 10:00:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states and 345 transitions. [2021-12-16 10:00:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2021-12-16 10:00:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 269 states have (on average 1.2825278810408922) internal successors, (345), 268 states have internal predecessors, (345), 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) [2021-12-16 10:00:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 345 transitions. [2021-12-16 10:00:41,857 INFO L704 BuchiCegarLoop]: Abstraction has 269 states and 345 transitions. [2021-12-16 10:00:41,857 INFO L587 BuchiCegarLoop]: Abstraction has 269 states and 345 transitions. [2021-12-16 10:00:41,857 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-16 10:00:41,858 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 269 states and 345 transitions. [2021-12-16 10:00:41,859 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 193 [2021-12-16 10:00:41,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 10:00:41,859 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 10:00:41,860 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:41,860 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:41,860 INFO L791 eck$LassoCheckResult]: Stem: 1384#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1287#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 1288#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1294#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~2#1;havoc valid_product_~retValue_acc~2#1;valid_product_~retValue_acc~2#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~2#1; 1318#L184 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 1311#L140 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 1312#L113 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~2#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1378#L548-2 [2021-12-16 10:00:41,860 INFO L793 eck$LassoCheckResult]: Loop: 1378#L548-2 assume !false; 1466#L549 assume test_~splverifierCounter~0#1 < 4; 1467#L550 test_~tmp~5#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 1485#L558 assume !(0 != test_~tmp~5#1); 1483#L558-2 test_~tmp___0~2#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 1481#L568 assume !(0 != test_~tmp___0~2#1); 1479#L568-2 test_~tmp___2~0#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 1478#L578 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 1296#L534 assume { :end_inline_startSystem } true; 1359#L586-2 assume { :begin_inline_timeShift } true; 1476#L344 assume !(0 != ~pumpRunning~0); 1420#L344-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~3#1;havoc processEnvironment_~tmp~3#1; 1360#L402 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 1230#L376-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret25#1, isHighWaterLevel_~retValue_acc~8#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~8#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 1231#L322-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 1377#L327-1 isHighWaterLevel_#t~ret25#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret25#1;havoc isHighWaterLevel_#t~ret25#1; 1352#L504-3 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1250#L504-5 isHighWaterLevel_~retValue_acc~8#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~8#1; 1251#L510-1 processEnvironment__wrappee__highWaterSensor_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~2#1 := processEnvironment__wrappee__highWaterSensor_#t~ret14#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14#1; 1239#L380-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1241#L368-2 assume { :end_inline_processEnvironment__wrappee__base } true; 1370#L376-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1228#L402-1 assume { :end_inline_processEnvironment } true; 1229#L351-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_#t~ret7#1, __utac_acc__Specification3_spec__1_#t~ret8#1, __utac_acc__Specification3_spec__1_~tmp~1#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~1#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 1475#L282-1 __utac_acc__Specification3_spec__1_#t~ret6#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~1#1 := __utac_acc__Specification3_spec__1_#t~ret6#1;havoc __utac_acc__Specification3_spec__1_#t~ret6#1; 1473#L202 assume 0 != __utac_acc__Specification3_spec__1_~tmp~1#1; 1469#L208-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 1468#L361 assume { :end_inline_timeShift } true; 1378#L548-2 [2021-12-16 10:00:41,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-12-16 10:00:41,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:41,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849555861] [2021-12-16 10:00:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:41,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,870 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 10:00:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,880 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 10:00:41,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash 654988125, now seen corresponding path program 1 times [2021-12-16 10:00:41,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:41,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949830477] [2021-12-16 10:00:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:41,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,901 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 10:00:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:41,908 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 10:00:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash -595993823, now seen corresponding path program 1 times [2021-12-16 10:00:41,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:41,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539218056] [2021-12-16 10:00:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:41,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 10:00:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 10:00:41,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 10:00:41,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539218056] [2021-12-16 10:00:41,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539218056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 10:00:41,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 10:00:41,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 10:00:41,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146983630] [2021-12-16 10:00:41,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 10:00:42,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 10:00:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 10:00:42,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 10:00:42,205 INFO L87 Difference]: Start difference. First operand 269 states and 345 transitions. cyclomatic complexity: 79 Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 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) [2021-12-16 10:00:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 10:00:42,310 INFO L93 Difference]: Finished difference Result 928 states and 1180 transitions. [2021-12-16 10:00:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 10:00:42,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 928 states and 1180 transitions. [2021-12-16 10:00:42,317 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 704 [2021-12-16 10:00:42,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 928 states to 928 states and 1180 transitions. [2021-12-16 10:00:42,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 928 [2021-12-16 10:00:42,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 928 [2021-12-16 10:00:42,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 928 states and 1180 transitions. [2021-12-16 10:00:42,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 10:00:42,323 INFO L681 BuchiCegarLoop]: Abstraction has 928 states and 1180 transitions. [2021-12-16 10:00:42,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states and 1180 transitions. [2021-12-16 10:00:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 531. [2021-12-16 10:00:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 531 states have (on average 1.2636534839924671) internal successors, (671), 530 states have internal predecessors, (671), 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) [2021-12-16 10:00:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 671 transitions. [2021-12-16 10:00:42,334 INFO L704 BuchiCegarLoop]: Abstraction has 531 states and 671 transitions. [2021-12-16 10:00:42,334 INFO L587 BuchiCegarLoop]: Abstraction has 531 states and 671 transitions. [2021-12-16 10:00:42,334 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-16 10:00:42,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 531 states and 671 transitions. [2021-12-16 10:00:42,337 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 386 [2021-12-16 10:00:42,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-16 10:00:42,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-16 10:00:42,338 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:42,338 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 10:00:42,338 INFO L791 eck$LassoCheckResult]: Stem: 2608#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~cleanupTimeShifts~0 := 4;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 2501#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1, main_~retValue_acc~0#1, main_~tmp~0#1;havoc main_~retValue_acc~0#1;havoc main_~tmp~0#1;assume { :begin_inline_select_helpers } true; 2502#L176 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2508#L169 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~2#1;havoc valid_product_~retValue_acc~2#1;valid_product_~retValue_acc~2#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~2#1; 2533#L184 main_#t~ret4#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~0#1 := main_#t~ret4#1;havoc main_#t~ret4#1; 2526#L140 assume 0 != main_~tmp~0#1;assume { :begin_inline_setup } true; 2527#L113 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_#t~nondet29#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~2#1, test_~tmp___1~1#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~1#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2460#L548-2 [2021-12-16 10:00:42,338 INFO L793 eck$LassoCheckResult]: Loop: 2460#L548-2 assume !false; 2461#L549 assume test_~splverifierCounter~0#1 < 4; 2827#L550 test_~tmp~5#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 2943#L558 assume !(0 != test_~tmp~5#1); 2941#L558-2 test_~tmp___0~2#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 2940#L568 assume !(0 != test_~tmp___0~2#1); 2938#L568-2 test_~tmp___2~0#1 := test_#t~nondet28#1;havoc test_#t~nondet28#1; 2937#L578 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~1#1 := test_#t~nondet29#1;havoc test_#t~nondet29#1; 2935#L586 assume !(0 != test_~tmp___1~1#1); 2936#L586-2 assume { :begin_inline_timeShift } true; 2948#L344 assume !(0 != ~pumpRunning~0); 2947#L344-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret15#1, processEnvironment_~tmp~3#1;havoc processEnvironment_~tmp~3#1; 2579#L402 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14#1, processEnvironment__wrappee__highWaterSensor_~tmp~2#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2#1; 2445#L376-2 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret25#1, isHighWaterLevel_~retValue_acc~8#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~8#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~5#1;havoc isHighWaterSensorDry_~retValue_acc~5#1; 2446#L322-1 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~5#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~5#1; 2601#L327-1 isHighWaterLevel_#t~ret25#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret25#1;havoc isHighWaterLevel_#t~ret25#1; 2568#L504-3 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 2465#L504-5 isHighWaterLevel_~retValue_acc~8#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~8#1; 2466#L510-1 processEnvironment__wrappee__highWaterSensor_#t~ret14#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~2#1 := processEnvironment__wrappee__highWaterSensor_#t~ret14#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret14#1; 2451#L380-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2453#L368-2 assume { :end_inline_processEnvironment__wrappee__base } true; 2589#L376-3 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2443#L402-1 assume { :end_inline_processEnvironment } true; 2444#L351-1 assume { :begin_inline___utac_acc__Specification3_spec__1 } true;havoc __utac_acc__Specification3_spec__1_#t~ret6#1, __utac_acc__Specification3_spec__1_#t~ret7#1, __utac_acc__Specification3_spec__1_#t~ret8#1, __utac_acc__Specification3_spec__1_~tmp~1#1, __utac_acc__Specification3_spec__1_~tmp___0~0#1, __utac_acc__Specification3_spec__1_~tmp___1~0#1;havoc __utac_acc__Specification3_spec__1_~tmp~1#1;havoc __utac_acc__Specification3_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification3_spec__1_~tmp___1~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;havoc isMethaneLevelCritical_~retValue_acc~3#1;isMethaneLevelCritical_~retValue_acc~3#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~3#1; 2481#L282-1 __utac_acc__Specification3_spec__1_#t~ret6#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification3_spec__1_~tmp~1#1 := __utac_acc__Specification3_spec__1_#t~ret6#1;havoc __utac_acc__Specification3_spec__1_#t~ret6#1; 2575#L202 assume !(0 != __utac_acc__Specification3_spec__1_~tmp~1#1);assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~4#1;havoc getWaterLevel_~retValue_acc~4#1;getWaterLevel_~retValue_acc~4#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~4#1; 2576#L314 __utac_acc__Specification3_spec__1_#t~ret7#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification3_spec__1_~tmp___0~0#1 := __utac_acc__Specification3_spec__1_#t~ret7#1;havoc __utac_acc__Specification3_spec__1_#t~ret7#1; 2597#L208 assume !(2 == __utac_acc__Specification3_spec__1_~tmp___0~0#1); 2520#L208-1 assume { :end_inline___utac_acc__Specification3_spec__1 } true; 2521#L361 assume { :end_inline_timeShift } true; 2460#L548-2 [2021-12-16 10:00:42,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:42,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-12-16 10:00:42,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:42,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004919285] [2021-12-16 10:00:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:42,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:42,346 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 10:00:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:42,353 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 10:00:42,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash 738432386, now seen corresponding path program 1 times [2021-12-16 10:00:42,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:42,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089533112] [2021-12-16 10:00:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:42,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:42,359 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 10:00:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:42,366 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 10:00:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 10:00:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1135623238, now seen corresponding path program 1 times [2021-12-16 10:00:42,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 10:00:42,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652145006] [2021-12-16 10:00:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 10:00:42,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 10:00:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:42,375 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 10:00:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 10:00:42,386 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 10:00:45,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.12 10:00:45 BoogieIcfgContainer [2021-12-16 10:00:45,207 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-16 10:00:45,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 10:00:45,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 10:00:45,208 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 10:00:45,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:00:40" (3/4) ... [2021-12-16 10:00:45,211 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-16 10:00:45,255 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 10:00:45,256 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 10:00:45,256 INFO L158 Benchmark]: Toolchain (without parser) took 5616.27ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 58.6MB in the beginning and 65.3MB in the end (delta: -6.7MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2021-12-16 10:00:45,257 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 51.0MB in the beginning and 51.0MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 10:00:45,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.78ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 58.4MB in the beginning and 87.5MB in the end (delta: -29.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-12-16 10:00:45,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.37ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 84.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 10:00:45,258 INFO L158 Benchmark]: Boogie Preprocessor took 58.53ms. Allocated memory is still 121.6MB. Free memory was 84.0MB in the beginning and 81.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 10:00:45,259 INFO L158 Benchmark]: RCFGBuilder took 546.93ms. Allocated memory is still 121.6MB. Free memory was 81.9MB in the beginning and 60.3MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-16 10:00:45,259 INFO L158 Benchmark]: BuchiAutomizer took 4424.64ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 60.3MB in the beginning and 68.5MB in the end (delta: -8.2MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2021-12-16 10:00:45,259 INFO L158 Benchmark]: Witness Printer took 47.88ms. Allocated memory is still 146.8MB. Free memory was 68.5MB in the beginning and 65.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 10:00:45,262 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 51.0MB in the beginning and 51.0MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 454.78ms. Allocated memory was 92.3MB in the beginning and 121.6MB in the end (delta: 29.4MB). Free memory was 58.4MB in the beginning and 87.5MB in the end (delta: -29.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.37ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 84.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.53ms. Allocated memory is still 121.6MB. Free memory was 84.0MB in the beginning and 81.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 546.93ms. Allocated memory is still 121.6MB. Free memory was 81.9MB in the beginning and 60.3MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 4424.64ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 60.3MB in the beginning and 68.5MB in the end (delta: -8.2MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. * Witness Printer took 47.88ms. Allocated memory is still 146.8MB. Free memory was 68.5MB in the beginning and 65.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 531 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 691 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 531 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1952 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1952 mSDsluCounter, 3152 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2410 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 156 IncrementalHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 742 mSDtfsCounter, 156 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc2 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: 548]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, NULL=0, tmp___0=0, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18d94c56=0, tmp___0=0, NULL=1, methaneLevelCritical=0, tmp___0=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27a0ad7f=0, retValue_acc=0, \result=0, tmp=0, retValue_acc=1, retValue_acc=1, \result=1, \result=1, retValue_acc=0, tmp=1, tmp___1=0, tmp___2=0, cleanupTimeShifts=4, tmp=1, \result=0, tmp=0, head=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3cc62f5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4cee40a4=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36912a6a=0, tmp___1=0, NULL=0, retValue_acc=1, waterLevel=1, systemActive=1, retValue_acc=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6fa608e7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3263806b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e5e4c5e=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f5b3e3e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@749bfaee=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@217532c6=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 548]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L50] int cleanupTimeShifts = 4; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L337] int pumpRunning = 0; [L338] int systemActive = 1; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L539] int splverifierCounter ; [L540] int tmp ; [L541] int tmp___0 ; [L542] int tmp___1 ; [L543] int tmp___2 ; [L546] splverifierCounter = 0 Loop: [L548] COND TRUE 1 [L550] COND TRUE splverifierCounter < 4 [L556] tmp = __VERIFIER_nondet_int() [L558] COND FALSE !(\read(tmp)) [L566] tmp___0 = __VERIFIER_nondet_int() [L568] COND FALSE !(\read(tmp___0)) [L576] tmp___2 = __VERIFIER_nondet_int() [L578] COND FALSE !(\read(tmp___2)) [L584] tmp___1 = __VERIFIER_nondet_int() [L586] COND FALSE !(\read(tmp___1)) [L595] CALL timeShift() [L344] COND FALSE !(\read(pumpRunning)) [L351] COND TRUE \read(systemActive) [L353] CALL processEnvironment() [L399] int tmp ; [L402] COND FALSE !(\read(pumpRunning)) [L417] CALL processEnvironment__wrappee__highWaterSensor() [L373] int tmp ; [L376] COND TRUE ! pumpRunning [L378] CALL, EXPR isHighWaterLevel() [L496] int retValue_acc ; [L497] int tmp ; [L498] int tmp___0 ; [L502] CALL, EXPR isHighWaterSensorDry() [L319] int retValue_acc ; [L322] COND TRUE waterLevel < 2 [L323] retValue_acc = 1 [L324] return (retValue_acc); [L502] RET, EXPR isHighWaterSensorDry() [L502] tmp = isHighWaterSensorDry() [L504] COND TRUE \read(tmp) [L505] tmp___0 = 0 [L509] retValue_acc = tmp___0 [L510] return (retValue_acc); [L378] RET, EXPR isHighWaterLevel() [L378] tmp = isHighWaterLevel() [L380] COND FALSE !(\read(tmp)) [L386] FCALL processEnvironment__wrappee__base() [L417] RET processEnvironment__wrappee__highWaterSensor() [L353] RET processEnvironment() [L359] CALL __utac_acc__Specification3_spec__1() [L194] int tmp ; [L195] int tmp___0 ; [L196] int tmp___1 ; [L200] CALL, EXPR isMethaneLevelCritical() [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] return (retValue_acc); [L200] RET, EXPR isMethaneLevelCritical() [L200] tmp = isMethaneLevelCritical() [L202] COND FALSE !(\read(tmp)) [L206] CALL, EXPR getWaterLevel() [L310] int retValue_acc ; [L313] retValue_acc = waterLevel [L314] return (retValue_acc); [L206] RET, EXPR getWaterLevel() [L206] tmp___0 = getWaterLevel() [L208] COND FALSE !(tmp___0 == 2) [L359] RET __utac_acc__Specification3_spec__1() [L595] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-16 10:00:45,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)