./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product64.cil.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product64.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 c6b9b08cafcd1ede2e2b3a8fb1be067350eaac45a7dc4fb4db0fb4cb0fdccd74 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 04:15:46,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 04:15:46,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 04:15:46,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 04:15:46,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 04:15:46,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 04:15:46,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 04:15:46,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 04:15:46,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 04:15:46,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 04:15:46,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 04:15:46,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 04:15:46,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 04:15:46,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 04:15:46,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 04:15:46,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 04:15:46,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 04:15:46,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 04:15:46,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 04:15:46,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 04:15:46,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 04:15:46,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 04:15:46,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 04:15:46,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 04:15:46,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 04:15:46,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 04:15:46,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 04:15:46,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 04:15:46,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 04:15:46,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 04:15:46,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 04:15:46,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 04:15:46,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 04:15:46,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 04:15:46,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 04:15:46,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 04:15:46,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 04:15:46,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 04:15:46,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 04:15:46,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 04:15:46,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 04:15:46,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-02-21 04:15:46,289 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 04:15:46,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 04:15:46,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 04:15:46,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 04:15:46,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 04:15:46,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 04:15:46,291 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 04:15:46,291 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 04:15:46,291 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 04:15:46,292 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 04:15:46,292 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 04:15:46,292 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 04:15:46,292 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 04:15:46,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 04:15:46,292 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-21 04:15:46,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 04:15:46,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 04:15:46,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-21 04:15:46,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 04:15:46,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 04:15:46,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 04:15:46,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 04:15:46,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-21 04:15:46,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 04:15:46,294 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 04:15:46,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 04:15:46,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 04:15:46,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 04:15:46,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 04:15:46,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 04:15:46,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 04:15:46,295 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 04:15:46,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6b9b08cafcd1ede2e2b3a8fb1be067350eaac45a7dc4fb4db0fb4cb0fdccd74 [2022-02-21 04:15:46,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 04:15:46,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 04:15:46,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 04:15:46,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 04:15:46,490 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 04:15:46,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product64.cil.c [2022-02-21 04:15:46,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45973fd91/783281d2eb8f468a916e0b6eae911e13/FLAGfaff68497 [2022-02-21 04:15:46,919 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 04:15:46,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product64.cil.c [2022-02-21 04:15:46,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45973fd91/783281d2eb8f468a916e0b6eae911e13/FLAGfaff68497 [2022-02-21 04:15:46,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45973fd91/783281d2eb8f468a916e0b6eae911e13 [2022-02-21 04:15:46,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 04:15:46,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 04:15:46,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 04:15:46,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 04:15:46,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 04:15:46,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:15:46" (1/1) ... [2022-02-21 04:15:46,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537b91d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:46, skipping insertion in model container [2022-02-21 04:15:46,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:15:46" (1/1) ... [2022-02-21 04:15:46,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 04:15:46,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 04:15:47,105 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_spec1_product64.cil.c[1605,1618] [2022-02-21 04:15:47,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 04:15:47,254 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 04:15:47,278 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_spec1_product64.cil.c[1605,1618] [2022-02-21 04:15:47,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 04:15:47,356 INFO L208 MainTranslator]: Completed translation [2022-02-21 04:15:47,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47 WrapperNode [2022-02-21 04:15:47,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 04:15:47,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 04:15:47,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 04:15:47,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 04:15:47,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,504 INFO L137 Inliner]: procedures = 59, calls = 163, calls flagged for inlining = 60, calls inlined = 176, statements flattened = 1263 [2022-02-21 04:15:47,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 04:15:47,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 04:15:47,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 04:15:47,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 04:15:47,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 04:15:47,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 04:15:47,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 04:15:47,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 04:15:47,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (1/1) ... [2022-02-21 04:15:47,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 04:15:47,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 04:15:47,730 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) [2022-02-21 04:15:47,738 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 [2022-02-21 04:15:47,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-21 04:15:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-21 04:15:47,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 04:15:47,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 04:15:47,865 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 04:15:47,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 04:15:48,538 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 04:15:48,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 04:15:48,546 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-21 04:15:48,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:15:48 BoogieIcfgContainer [2022-02-21 04:15:48,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 04:15:48,548 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 04:15:48,548 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 04:15:48,551 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 04:15:48,551 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:15:48,551 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 04:15:46" (1/3) ... [2022-02-21 04:15:48,552 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12666646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 04:15:48, skipping insertion in model container [2022-02-21 04:15:48,552 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:15:48,553 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:15:47" (2/3) ... [2022-02-21 04:15:48,553 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12666646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 04:15:48, skipping insertion in model container [2022-02-21 04:15:48,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 04:15:48,553 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:15:48" (3/3) ... [2022-02-21 04:15:48,554 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec1_product64.cil.c [2022-02-21 04:15:48,583 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 04:15:48,583 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 04:15:48,583 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 04:15:48,584 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 04:15:48,584 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 04:15:48,584 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 04:15:48,584 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 04:15:48,584 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 04:15:48,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 323 states, 322 states have (on average 1.3509316770186335) internal successors, (435), 322 states have internal predecessors, (435), 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) [2022-02-21 04:15:48,752 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 213 [2022-02-21 04:15:48,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:15:48,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:15:48,758 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:15:48,758 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:15:48,758 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 04:15:48,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 323 states, 322 states have (on average 1.3509316770186335) internal successors, (435), 322 states have internal predecessors, (435), 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) [2022-02-21 04:15:48,780 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 213 [2022-02-21 04:15:48,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:15:48,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:15:48,781 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:15:48,781 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:15:48,790 INFO L791 eck$LassoCheckResult]: Stem: 307#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 226#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret30#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 155#L84true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 264#L77true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 144#L92true main_#t~ret30#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret30#1;havoc main_#t~ret30#1; 232#L578true assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 325#L554true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~11#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~11#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 156#L977-2true [2022-02-21 04:15:48,790 INFO L793 eck$LassoCheckResult]: Loop: 156#L977-2true assume !false; 13#L978true assume test_~splverifierCounter~0#1 < 4; 151#L979true test_~tmp~11#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 108#L987true assume !(0 != test_~tmp~11#1); 269#L987-2true test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 270#L997true assume !(0 != test_~tmp___0~3#1); 175#L997-2true test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 89#L1007true assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 153#L859true assume { :end_inline_startSystem } true; 211#L1015-2true assume { :begin_inline_timeShift } true; 42#L607true assume !(0 != ~pumpRunning~0); 69#L607-2true assume !(0 != ~systemActive~0); 97#L614-1true assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_#t~ret6#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 318#L907-5true __utac_acc__Specification1_spec__1_#t~ret5#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret5#1;havoc __utac_acc__Specification1_spec__1_#t~ret5#1; 166#L107true assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 159#L107-1true assume { :end_inline___utac_acc__Specification1_spec__1 } true; 230#L624true assume { :end_inline_timeShift } true; 156#L977-2true [2022-02-21 04:15:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:15:48,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2022-02-21 04:15:48,808 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:15:48,808 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495890958] [2022-02-21 04:15:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:15:48,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:15:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:48,927 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:15:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:48,971 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:15:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:15:48,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1296492159, now seen corresponding path program 1 times [2022-02-21 04:15:48,979 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:15:48,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754099770] [2022-02-21 04:15:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:15:48,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:15:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:15:49,071 INFO L290 TraceCheckUtils]: 0: Hoare triple {329#true} assume !false; {329#true} is VALID [2022-02-21 04:15:49,072 INFO L290 TraceCheckUtils]: 1: Hoare triple {329#true} assume test_~splverifierCounter~0#1 < 4; {329#true} is VALID [2022-02-21 04:15:49,072 INFO L290 TraceCheckUtils]: 2: Hoare triple {329#true} test_~tmp~11#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; {329#true} is VALID [2022-02-21 04:15:49,072 INFO L290 TraceCheckUtils]: 3: Hoare triple {329#true} assume !(0 != test_~tmp~11#1); {329#true} is VALID [2022-02-21 04:15:49,072 INFO L290 TraceCheckUtils]: 4: Hoare triple {329#true} test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; {329#true} is VALID [2022-02-21 04:15:49,072 INFO L290 TraceCheckUtils]: 5: Hoare triple {329#true} assume !(0 != test_~tmp___0~3#1); {329#true} is VALID [2022-02-21 04:15:49,072 INFO L290 TraceCheckUtils]: 6: Hoare triple {329#true} test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; {329#true} is VALID [2022-02-21 04:15:49,073 INFO L290 TraceCheckUtils]: 7: Hoare triple {329#true} assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; {331#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:15:49,074 INFO L290 TraceCheckUtils]: 8: Hoare triple {331#(<= 1 ~systemActive~0)} assume { :end_inline_startSystem } true; {331#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:15:49,074 INFO L290 TraceCheckUtils]: 9: Hoare triple {331#(<= 1 ~systemActive~0)} assume { :begin_inline_timeShift } true; {331#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:15:49,074 INFO L290 TraceCheckUtils]: 10: Hoare triple {331#(<= 1 ~systemActive~0)} assume !(0 != ~pumpRunning~0); {331#(<= 1 ~systemActive~0)} is VALID [2022-02-21 04:15:49,075 INFO L290 TraceCheckUtils]: 11: Hoare triple {331#(<= 1 ~systemActive~0)} assume !(0 != ~systemActive~0); {330#false} is VALID [2022-02-21 04:15:49,075 INFO L290 TraceCheckUtils]: 12: Hoare triple {330#false} assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_#t~ret6#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; {330#false} is VALID [2022-02-21 04:15:49,075 INFO L290 TraceCheckUtils]: 13: Hoare triple {330#false} __utac_acc__Specification1_spec__1_#t~ret5#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret5#1;havoc __utac_acc__Specification1_spec__1_#t~ret5#1; {330#false} is VALID [2022-02-21 04:15:49,076 INFO L290 TraceCheckUtils]: 14: Hoare triple {330#false} assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); {330#false} is VALID [2022-02-21 04:15:49,076 INFO L290 TraceCheckUtils]: 15: Hoare triple {330#false} assume { :end_inline___utac_acc__Specification1_spec__1 } true; {330#false} is VALID [2022-02-21 04:15:49,076 INFO L290 TraceCheckUtils]: 16: Hoare triple {330#false} assume { :end_inline_timeShift } true; {330#false} is VALID [2022-02-21 04:15:49,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:15:49,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:15:49,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754099770] [2022-02-21 04:15:49,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754099770] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:15:49,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:15:49,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 04:15:49,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864066024] [2022-02-21 04:15:49,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:15:49,082 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:15:49,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:15:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 04:15:49,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 04:15:49,109 INFO L87 Difference]: Start difference. First operand has 323 states, 322 states have (on average 1.3509316770186335) internal successors, (435), 322 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-21 04:15:49,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:15:49,613 INFO L93 Difference]: Finished difference Result 631 states and 837 transitions. [2022-02-21 04:15:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 04:15:49,614 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-02-21 04:15:49,630 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:15:49,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 631 states and 837 transitions. [2022-02-21 04:15:49,658 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 416 [2022-02-21 04:15:49,696 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 631 states to 611 states and 816 transitions. [2022-02-21 04:15:49,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 611 [2022-02-21 04:15:49,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 611 [2022-02-21 04:15:49,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 611 states and 816 transitions. [2022-02-21 04:15:49,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:15:49,700 INFO L681 BuchiCegarLoop]: Abstraction has 611 states and 816 transitions. [2022-02-21 04:15:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states and 816 transitions. [2022-02-21 04:15:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 608. [2022-02-21 04:15:49,741 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:15:49,745 INFO L82 GeneralOperation]: Start isEquivalent. First operand 611 states and 816 transitions. Second operand has 608 states, 608 states have (on average 1.3355263157894737) internal successors, (812), 607 states have internal predecessors, (812), 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) [2022-02-21 04:15:49,747 INFO L74 IsIncluded]: Start isIncluded. First operand 611 states and 816 transitions. Second operand has 608 states, 608 states have (on average 1.3355263157894737) internal successors, (812), 607 states have internal predecessors, (812), 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) [2022-02-21 04:15:49,749 INFO L87 Difference]: Start difference. First operand 611 states and 816 transitions. Second operand has 608 states, 608 states have (on average 1.3355263157894737) internal successors, (812), 607 states have internal predecessors, (812), 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) [2022-02-21 04:15:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:15:49,774 INFO L93 Difference]: Finished difference Result 611 states and 816 transitions. [2022-02-21 04:15:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 816 transitions. [2022-02-21 04:15:49,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:15:49,782 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:15:49,784 INFO L74 IsIncluded]: Start isIncluded. First operand has 608 states, 608 states have (on average 1.3355263157894737) internal successors, (812), 607 states have internal predecessors, (812), 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 611 states and 816 transitions. [2022-02-21 04:15:49,788 INFO L87 Difference]: Start difference. First operand has 608 states, 608 states have (on average 1.3355263157894737) internal successors, (812), 607 states have internal predecessors, (812), 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 611 states and 816 transitions. [2022-02-21 04:15:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:15:49,806 INFO L93 Difference]: Finished difference Result 611 states and 816 transitions. [2022-02-21 04:15:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 816 transitions. [2022-02-21 04:15:49,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:15:49,807 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:15:49,807 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:15:49,808 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:15:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 608 states have (on average 1.3355263157894737) internal successors, (812), 607 states have internal predecessors, (812), 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) [2022-02-21 04:15:49,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 812 transitions. [2022-02-21 04:15:49,830 INFO L704 BuchiCegarLoop]: Abstraction has 608 states and 812 transitions. [2022-02-21 04:15:49,830 INFO L587 BuchiCegarLoop]: Abstraction has 608 states and 812 transitions. [2022-02-21 04:15:49,830 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2022-02-21 04:15:49,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 608 states and 812 transitions. [2022-02-21 04:15:49,835 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 413 [2022-02-21 04:15:49,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:15:49,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:15:49,838 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:15:49,838 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] [2022-02-21 04:15:49,839 INFO L791 eck$LassoCheckResult]: Stem: 1293#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 1260#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret30#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 1202#L84 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1203#L77 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 1190#L92 main_#t~ret30#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret30#1;havoc main_#t~ret30#1; 1191#L578 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 1265#L554 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~11#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~11#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1296#L977-2 [2022-02-21 04:15:49,840 INFO L793 eck$LassoCheckResult]: Loop: 1296#L977-2 assume !false; 1462#L978 assume test_~splverifierCounter~0#1 < 4; 1463#L979 test_~tmp~11#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 1517#L987 assume !(0 != test_~tmp~11#1); 1515#L987-2 test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 1513#L997 assume !(0 != test_~tmp___0~3#1); 1510#L997-2 test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 1508#L1007 assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet54#1;havoc test_#t~nondet54#1; 1506#L1015 assume !(0 != test_~tmp___1~0#1); 1200#L1015-2 assume { :begin_inline_timeShift } true; 1502#L607 assume !(0 != ~pumpRunning~0); 1500#L607-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret33#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 1498#L691 assume 0 != ~pumpRunning~0;assume { :begin_inline_isMethaneAlarm } true;havoc isMethaneAlarm_#res#1;havoc isMethaneAlarm_#t~ret35#1, isMethaneAlarm_~retValue_acc~6#1;havoc isMethaneAlarm_~retValue_acc~6#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 1499#L907 isMethaneAlarm_#t~ret35#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;isMethaneAlarm_~retValue_acc~6#1 := isMethaneAlarm_#t~ret35#1;havoc isMethaneAlarm_#t~ret35#1;isMethaneAlarm_#res#1 := isMethaneAlarm_~retValue_acc~6#1; 1497#L752 processEnvironment_#t~ret33#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~7#1 := processEnvironment_#t~ret33#1;havoc processEnvironment_#t~ret33#1; 1494#L695 assume 0 != processEnvironment_~tmp~7#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; 1474#L742-1 assume { :end_inline_deactivatePump } true; 1471#L691-1 assume { :end_inline_processEnvironment } true; 1470#L614-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_#t~ret6#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 1469#L907-5 __utac_acc__Specification1_spec__1_#t~ret5#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret5#1;havoc __utac_acc__Specification1_spec__1_#t~ret5#1; 1467#L107 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 1465#L107-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 1464#L624 assume { :end_inline_timeShift } true; 1296#L977-2 [2022-02-21 04:15:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:15:49,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2022-02-21 04:15:49,842 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:15:49,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245315657] [2022-02-21 04:15:49,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:15:49,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:15:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:49,874 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:15:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:49,896 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:15:49,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:15:49,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1618549816, now seen corresponding path program 1 times [2022-02-21 04:15:49,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:15:49,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565195970] [2022-02-21 04:15:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:15:49,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:15:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 04:15:49,916 INFO L290 TraceCheckUtils]: 0: Hoare triple {2798#true} assume !false; {2798#true} is VALID [2022-02-21 04:15:49,917 INFO L290 TraceCheckUtils]: 1: Hoare triple {2798#true} assume test_~splverifierCounter~0#1 < 4; {2798#true} is VALID [2022-02-21 04:15:49,917 INFO L290 TraceCheckUtils]: 2: Hoare triple {2798#true} test_~tmp~11#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; {2798#true} is VALID [2022-02-21 04:15:49,917 INFO L290 TraceCheckUtils]: 3: Hoare triple {2798#true} assume !(0 != test_~tmp~11#1); {2798#true} is VALID [2022-02-21 04:15:49,917 INFO L290 TraceCheckUtils]: 4: Hoare triple {2798#true} test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; {2798#true} is VALID [2022-02-21 04:15:49,917 INFO L290 TraceCheckUtils]: 5: Hoare triple {2798#true} assume !(0 != test_~tmp___0~3#1); {2798#true} is VALID [2022-02-21 04:15:49,917 INFO L290 TraceCheckUtils]: 6: Hoare triple {2798#true} test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; {2798#true} is VALID [2022-02-21 04:15:49,918 INFO L290 TraceCheckUtils]: 7: Hoare triple {2798#true} assume !(0 != test_~tmp___2~0#1);test_~tmp___1~0#1 := test_#t~nondet54#1;havoc test_#t~nondet54#1; {2798#true} is VALID [2022-02-21 04:15:49,918 INFO L290 TraceCheckUtils]: 8: Hoare triple {2798#true} assume !(0 != test_~tmp___1~0#1); {2798#true} is VALID [2022-02-21 04:15:49,918 INFO L290 TraceCheckUtils]: 9: Hoare triple {2798#true} assume { :begin_inline_timeShift } true; {2798#true} is VALID [2022-02-21 04:15:49,918 INFO L290 TraceCheckUtils]: 10: Hoare triple {2798#true} assume !(0 != ~pumpRunning~0); {2800#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:15:49,919 INFO L290 TraceCheckUtils]: 11: Hoare triple {2800#(= ~pumpRunning~0 0)} assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret33#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; {2800#(= ~pumpRunning~0 0)} is VALID [2022-02-21 04:15:49,919 INFO L290 TraceCheckUtils]: 12: Hoare triple {2800#(= ~pumpRunning~0 0)} assume 0 != ~pumpRunning~0;assume { :begin_inline_isMethaneAlarm } true;havoc isMethaneAlarm_#res#1;havoc isMethaneAlarm_#t~ret35#1, isMethaneAlarm_~retValue_acc~6#1;havoc isMethaneAlarm_~retValue_acc~6#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; {2799#false} is VALID [2022-02-21 04:15:49,919 INFO L290 TraceCheckUtils]: 13: Hoare triple {2799#false} isMethaneAlarm_#t~ret35#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;isMethaneAlarm_~retValue_acc~6#1 := isMethaneAlarm_#t~ret35#1;havoc isMethaneAlarm_#t~ret35#1;isMethaneAlarm_#res#1 := isMethaneAlarm_~retValue_acc~6#1; {2799#false} is VALID [2022-02-21 04:15:49,920 INFO L290 TraceCheckUtils]: 14: Hoare triple {2799#false} processEnvironment_#t~ret33#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~7#1 := processEnvironment_#t~ret33#1;havoc processEnvironment_#t~ret33#1; {2799#false} is VALID [2022-02-21 04:15:49,920 INFO L290 TraceCheckUtils]: 15: Hoare triple {2799#false} assume 0 != processEnvironment_~tmp~7#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; {2799#false} is VALID [2022-02-21 04:15:49,920 INFO L290 TraceCheckUtils]: 16: Hoare triple {2799#false} assume { :end_inline_deactivatePump } true; {2799#false} is VALID [2022-02-21 04:15:49,920 INFO L290 TraceCheckUtils]: 17: Hoare triple {2799#false} assume { :end_inline_processEnvironment } true; {2799#false} is VALID [2022-02-21 04:15:49,920 INFO L290 TraceCheckUtils]: 18: Hoare triple {2799#false} assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_#t~ret6#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; {2799#false} is VALID [2022-02-21 04:15:49,921 INFO L290 TraceCheckUtils]: 19: Hoare triple {2799#false} __utac_acc__Specification1_spec__1_#t~ret5#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret5#1;havoc __utac_acc__Specification1_spec__1_#t~ret5#1; {2799#false} is VALID [2022-02-21 04:15:49,921 INFO L290 TraceCheckUtils]: 20: Hoare triple {2799#false} assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); {2799#false} is VALID [2022-02-21 04:15:49,921 INFO L290 TraceCheckUtils]: 21: Hoare triple {2799#false} assume { :end_inline___utac_acc__Specification1_spec__1 } true; {2799#false} is VALID [2022-02-21 04:15:49,921 INFO L290 TraceCheckUtils]: 22: Hoare triple {2799#false} assume { :end_inline_timeShift } true; {2799#false} is VALID [2022-02-21 04:15:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 04:15:49,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 04:15:49,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565195970] [2022-02-21 04:15:49,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565195970] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 04:15:49,922 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 04:15:49,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 04:15:49,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650512358] [2022-02-21 04:15:49,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 04:15:49,923 INFO L808 eck$LassoCheckResult]: loop already infeasible [2022-02-21 04:15:49,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 04:15:49,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 04:15:49,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 04:15:49,926 INFO L87 Difference]: Start difference. First operand 608 states and 812 transitions. cyclomatic complexity: 207 Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-02-21 04:15:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:15:50,223 INFO L93 Difference]: Finished difference Result 624 states and 791 transitions. [2022-02-21 04:15:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 04:15:50,223 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-02-21 04:15:50,237 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 04:15:50,238 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 624 states and 791 transitions. [2022-02-21 04:15:50,254 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 435 [2022-02-21 04:15:50,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 624 states to 624 states and 791 transitions. [2022-02-21 04:15:50,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 624 [2022-02-21 04:15:50,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 624 [2022-02-21 04:15:50,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 624 states and 791 transitions. [2022-02-21 04:15:50,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 04:15:50,270 INFO L681 BuchiCegarLoop]: Abstraction has 624 states and 791 transitions. [2022-02-21 04:15:50,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states and 791 transitions. [2022-02-21 04:15:50,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2022-02-21 04:15:50,279 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 04:15:50,280 INFO L82 GeneralOperation]: Start isEquivalent. First operand 624 states and 791 transitions. Second operand has 624 states, 624 states have (on average 1.267628205128205) internal successors, (791), 623 states have internal predecessors, (791), 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) [2022-02-21 04:15:50,281 INFO L74 IsIncluded]: Start isIncluded. First operand 624 states and 791 transitions. Second operand has 624 states, 624 states have (on average 1.267628205128205) internal successors, (791), 623 states have internal predecessors, (791), 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) [2022-02-21 04:15:50,282 INFO L87 Difference]: Start difference. First operand 624 states and 791 transitions. Second operand has 624 states, 624 states have (on average 1.267628205128205) internal successors, (791), 623 states have internal predecessors, (791), 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) [2022-02-21 04:15:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:15:50,294 INFO L93 Difference]: Finished difference Result 624 states and 791 transitions. [2022-02-21 04:15:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 791 transitions. [2022-02-21 04:15:50,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:15:50,295 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:15:50,296 INFO L74 IsIncluded]: Start isIncluded. First operand has 624 states, 624 states have (on average 1.267628205128205) internal successors, (791), 623 states have internal predecessors, (791), 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 624 states and 791 transitions. [2022-02-21 04:15:50,297 INFO L87 Difference]: Start difference. First operand has 624 states, 624 states have (on average 1.267628205128205) internal successors, (791), 623 states have internal predecessors, (791), 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 624 states and 791 transitions. [2022-02-21 04:15:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 04:15:50,309 INFO L93 Difference]: Finished difference Result 624 states and 791 transitions. [2022-02-21 04:15:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 791 transitions. [2022-02-21 04:15:50,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 04:15:50,328 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 04:15:50,328 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 04:15:50,328 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 04:15:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 624 states have (on average 1.267628205128205) internal successors, (791), 623 states have internal predecessors, (791), 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) [2022-02-21 04:15:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 791 transitions. [2022-02-21 04:15:50,340 INFO L704 BuchiCegarLoop]: Abstraction has 624 states and 791 transitions. [2022-02-21 04:15:50,340 INFO L587 BuchiCegarLoop]: Abstraction has 624 states and 791 transitions. [2022-02-21 04:15:50,340 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2022-02-21 04:15:50,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 624 states and 791 transitions. [2022-02-21 04:15:50,342 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 435 [2022-02-21 04:15:50,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 04:15:50,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 04:15:50,343 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-21 04:15:50,343 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] [2022-02-21 04:15:50,343 INFO L791 eck$LassoCheckResult]: Stem: 3693#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(30, 4);call #Ultimate.allocInit(9, 5);call #Ultimate.allocInit(21, 6);call #Ultimate.allocInit(30, 7);call #Ultimate.allocInit(9, 8);call #Ultimate.allocInit(21, 9);call #Ultimate.allocInit(30, 10);call #Ultimate.allocInit(9, 11);call #Ultimate.allocInit(25, 12);call #Ultimate.allocInit(30, 13);call #Ultimate.allocInit(9, 14);call #Ultimate.allocInit(25, 15);call #Ultimate.allocInit(13, 16);call #Ultimate.allocInit(3, 17);call write~init~int(79, 17, 0, 1);call write~init~int(110, 17, 1, 1);call write~init~int(0, 17, 2, 1);call #Ultimate.allocInit(4, 18);call write~init~int(79, 18, 0, 1);call write~init~int(102, 18, 1, 1);call write~init~int(102, 18, 2, 1);call write~init~int(0, 18, 3, 1);call #Ultimate.allocInit(7, 19);call write~init~int(44, 19, 0, 1);call write~init~int(80, 19, 1, 1);call write~init~int(117, 19, 2, 1);call write~init~int(109, 19, 3, 1);call write~init~int(112, 19, 4, 1);call write~init~int(58, 19, 5, 1);call write~init~int(0, 19, 6, 1);call #Ultimate.allocInit(3, 20);call write~init~int(79, 20, 0, 1);call write~init~int(110, 20, 1, 1);call write~init~int(0, 20, 2, 1);call #Ultimate.allocInit(4, 21);call write~init~int(79, 21, 0, 1);call write~init~int(102, 21, 1, 1);call write~init~int(102, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(3, 22);call write~init~int(41, 22, 0, 1);call write~init~int(32, 22, 1, 1);call write~init~int(0, 22, 2, 1);call #Ultimate.allocInit(2, 23);call write~init~int(10, 23, 0, 1);call write~init~int(0, 23, 1, 1);call #Ultimate.allocInit(13, 24);call #Ultimate.allocInit(7, 25);call write~init~int(44, 25, 0, 1);call write~init~int(77, 25, 1, 1);call write~init~int(101, 25, 2, 1);call write~init~int(116, 25, 3, 1);call write~init~int(104, 25, 4, 1);call write~init~int(58, 25, 5, 1);call write~init~int(0, 25, 6, 1);call #Ultimate.allocInit(5, 26);call write~init~int(67, 26, 0, 1);call write~init~int(82, 26, 1, 1);call write~init~int(73, 26, 2, 1);call write~init~int(84, 26, 3, 1);call write~init~int(0, 26, 4, 1);call #Ultimate.allocInit(3, 27);call write~init~int(79, 27, 0, 1);call write~init~int(75, 27, 1, 1);call write~init~int(0, 27, 2, 1);call #Ultimate.allocInit(2, 28);call write~init~int(41, 28, 0, 1);call write~init~int(0, 28, 1, 1);~head~0.base, ~head~0.offset := 0, 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0; 3657#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret30#1, main_~retValue_acc~5#1, main_~tmp~4#1;havoc main_~retValue_acc~5#1;havoc main_~tmp~4#1;assume { :begin_inline_select_helpers } true; 3608#L84 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3609#L77 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~1#1;havoc valid_product_~retValue_acc~1#1;valid_product_~retValue_acc~1#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~1#1; 3598#L92 main_#t~ret30#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~4#1 := main_#t~ret30#1;havoc main_#t~ret30#1; 3599#L578 assume 0 != main_~tmp~4#1;assume { :begin_inline_setup } true; 3662#L554 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet51#1, test_#t~nondet52#1, test_#t~nondet53#1, test_#t~nondet54#1, test_~splverifierCounter~0#1, test_~tmp~11#1, test_~tmp___0~3#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~11#1;havoc test_~tmp___0~3#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3659#L977-2 [2022-02-21 04:15:50,344 INFO L793 eck$LassoCheckResult]: Loop: 3659#L977-2 assume !false; 3820#L978 assume test_~splverifierCounter~0#1 < 4; 3819#L979 test_~tmp~11#1 := test_#t~nondet51#1;havoc test_#t~nondet51#1; 3817#L987 assume !(0 != test_~tmp~11#1); 3813#L987-2 test_~tmp___0~3#1 := test_#t~nondet52#1;havoc test_#t~nondet52#1; 3809#L997 assume !(0 != test_~tmp___0~3#1); 3807#L997-2 test_~tmp___2~0#1 := test_#t~nondet53#1;havoc test_#t~nondet53#1; 3806#L1007 assume 0 != test_~tmp___2~0#1;assume { :begin_inline_startSystem } true;~systemActive~0 := 1; 3546#L859 assume { :end_inline_startSystem } true; 3606#L1015-2 assume { :begin_inline_timeShift } true; 3802#L607 assume !(0 != ~pumpRunning~0); 3800#L607-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret33#1, processEnvironment_~tmp~7#1;havoc processEnvironment_~tmp~7#1; 3798#L691 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__methaneQuery } true;havoc processEnvironment__wrappee__methaneQuery_#t~ret32#1, processEnvironment__wrappee__methaneQuery_~tmp~6#1;havoc processEnvironment__wrappee__methaneQuery_~tmp~6#1; 3797#L665-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret31#1, processEnvironment__wrappee__highWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~5#1; 3796#L639-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret44#1, isHighWaterLevel_~retValue_acc~8#1, isHighWaterLevel_~tmp~9#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~8#1;havoc isHighWaterLevel_~tmp~9#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~12#1;havoc isHighWaterSensorDry_~retValue_acc~12#1; 3794#L947-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~12#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~12#1; 3792#L952-3 isHighWaterLevel_#t~ret44#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~9#1 := isHighWaterLevel_#t~ret44#1;havoc isHighWaterLevel_#t~ret44#1; 3789#L810-9 assume 0 != isHighWaterLevel_~tmp~9#1;isHighWaterLevel_~tmp___0~1#1 := 0; 3787#L810-11 isHighWaterLevel_~retValue_acc~8#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~8#1; 3785#L816-3 processEnvironment__wrappee__highWaterSensor_#t~ret31#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~5#1 := processEnvironment__wrappee__highWaterSensor_#t~ret31#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret31#1; 3779#L643-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~5#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3695#L631-6 assume { :end_inline_processEnvironment__wrappee__base } true; 3572#L639-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3573#L665-3 assume { :end_inline_processEnvironment__wrappee__methaneQuery } true; 3480#L691-1 assume { :end_inline_processEnvironment } true; 3554#L614-1 assume { :begin_inline___utac_acc__Specification1_spec__1 } true;havoc __utac_acc__Specification1_spec__1_#t~ret5#1, __utac_acc__Specification1_spec__1_#t~ret6#1, __utac_acc__Specification1_spec__1_~tmp~0#1, __utac_acc__Specification1_spec__1_~tmp___0~0#1;havoc __utac_acc__Specification1_spec__1_~tmp~0#1;havoc __utac_acc__Specification1_spec__1_~tmp___0~0#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;havoc isMethaneLevelCritical_~retValue_acc~10#1;isMethaneLevelCritical_~retValue_acc~10#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~10#1; 3555#L907-5 __utac_acc__Specification1_spec__1_#t~ret5#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;__utac_acc__Specification1_spec__1_~tmp~0#1 := __utac_acc__Specification1_spec__1_#t~ret5#1;havoc __utac_acc__Specification1_spec__1_#t~ret5#1; 3617#L107 assume !(0 != __utac_acc__Specification1_spec__1_~tmp~0#1); 3613#L107-1 assume { :end_inline___utac_acc__Specification1_spec__1 } true; 3614#L624 assume { :end_inline_timeShift } true; 3659#L977-2 [2022-02-21 04:15:50,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:15:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2022-02-21 04:15:50,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:15:50,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370129344] [2022-02-21 04:15:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:15:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:15:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:50,353 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:15:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:50,374 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:15:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:15:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash 236223142, now seen corresponding path program 1 times [2022-02-21 04:15:50,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:15:50,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994222281] [2022-02-21 04:15:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:15:50,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:15:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:50,382 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:15:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:50,402 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:15:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 04:15:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash 633413994, now seen corresponding path program 1 times [2022-02-21 04:15:50,403 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 04:15:50,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915732604] [2022-02-21 04:15:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 04:15:50,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 04:15:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:50,427 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 04:15:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 04:15:50,449 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 04:15:53,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 04:15:53 BoogieIcfgContainer [2022-02-21 04:15:53,919 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 04:15:53,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 04:15:53,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 04:15:53,920 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 04:15:53,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:15:48" (3/4) ... [2022-02-21 04:15:53,922 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-02-21 04:15:53,994 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 04:15:53,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 04:15:53,996 INFO L158 Benchmark]: Toolchain (without parser) took 7054.73ms. Allocated memory was 113.2MB in the beginning and 211.8MB in the end (delta: 98.6MB). Free memory was 75.1MB in the beginning and 95.3MB in the end (delta: -20.2MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2022-02-21 04:15:53,996 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 04:15:53,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.91ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 76.9MB in the end (delta: -2.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-21 04:15:53,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 157.31ms. Allocated memory is still 113.2MB. Free memory was 76.9MB in the beginning and 70.0MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-02-21 04:15:53,997 INFO L158 Benchmark]: Boogie Preprocessor took 132.42ms. Allocated memory is still 113.2MB. Free memory was 70.0MB in the beginning and 66.1MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-21 04:15:53,997 INFO L158 Benchmark]: RCFGBuilder took 895.86ms. Allocated memory is still 113.2MB. Free memory was 66.1MB in the beginning and 64.3MB in the end (delta: 1.8MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2022-02-21 04:15:53,997 INFO L158 Benchmark]: BuchiAutomizer took 5371.04ms. Allocated memory was 113.2MB in the beginning and 211.8MB in the end (delta: 98.6MB). Free memory was 64.3MB in the beginning and 98.4MB in the end (delta: -34.0MB). Peak memory consumption was 87.1MB. Max. memory is 16.1GB. [2022-02-21 04:15:53,998 INFO L158 Benchmark]: Witness Printer took 75.36ms. Allocated memory is still 211.8MB. Free memory was 98.4MB in the beginning and 95.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 04:15:53,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.91ms. Allocated memory is still 113.2MB. Free memory was 74.9MB in the beginning and 76.9MB in the end (delta: -2.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 157.31ms. Allocated memory is still 113.2MB. Free memory was 76.9MB in the beginning and 70.0MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 132.42ms. Allocated memory is still 113.2MB. Free memory was 70.0MB in the beginning and 66.1MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 895.86ms. Allocated memory is still 113.2MB. Free memory was 66.1MB in the beginning and 64.3MB in the end (delta: 1.8MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 5371.04ms. Allocated memory was 113.2MB in the beginning and 211.8MB in the end (delta: 98.6MB). Free memory was 64.3MB in the beginning and 98.4MB in the end (delta: -34.0MB). Peak memory consumption was 87.1MB. Max. memory is 16.1GB. * Witness Printer took 75.36ms. Allocated memory is still 211.8MB. Free memory was 98.4MB in the beginning and 95.3MB in the end (delta: 3.0MB). 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 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 624 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 3.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 624 states and ocurred in iteration 2. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 645 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 645 mSDsluCounter, 1267 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 537 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 730 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 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: 977]: 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, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26e3cdea=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17ff9efc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69929adb=0, tmp___0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@672f4c7d=29, head=0, pumpRunning=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@8299bc8=0, tmp___0=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6e598f5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@404a6165=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36229d0f=0, tmp=0, tmp=0, methaneLevelCritical=0, retValue_acc=1, tmp=0, \result=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43852e3b=0, retValue_acc=1, \result=1, \result=1, tmp=1, retValue_acc=0, tmp___2=29, tmp=1, cleanupTimeShifts=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@768de19e=0, \result=0, head=0, tmp___1=0, NULL=0, tmp=0, waterLevel=1, systemActive=1, retValue_acc=0, tmp___0=0, \result=0, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1065e413=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 977]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L294] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L491] int cleanupTimeShifts = 4; [L600] int pumpRunning = 0; [L601] int systemActive = 1; [L864] int waterLevel = 1; [L865] int methaneLevelCritical = 0; [L569] int retValue_acc ; [L570] int tmp ; [L574] FCALL select_helpers() [L575] FCALL select_features() [L576] CALL, EXPR valid_product() [L88] int retValue_acc ; [L91] retValue_acc = 1 [L92] return (retValue_acc); [L576] RET, EXPR valid_product() [L576] tmp = valid_product() [L578] COND TRUE \read(tmp) [L580] FCALL setup() [L581] CALL runTest() [L563] CALL test() [L968] int splverifierCounter ; [L969] int tmp ; [L970] int tmp___0 ; [L971] int tmp___1 ; [L972] int tmp___2 ; [L975] splverifierCounter = 0 Loop: [L977] COND TRUE 1 [L979] COND TRUE splverifierCounter < 4 [L985] tmp = __VERIFIER_nondet_int() [L987] COND FALSE !(\read(tmp)) [L995] tmp___0 = __VERIFIER_nondet_int() [L997] COND FALSE !(\read(tmp___0)) [L1005] tmp___2 = __VERIFIER_nondet_int() [L1007] COND TRUE \read(tmp___2) [L1009] CALL startSystem() [L858] systemActive = 1 [L1009] RET startSystem() [L1024] CALL timeShift() [L607] COND FALSE !(\read(pumpRunning)) [L614] COND TRUE \read(systemActive) [L616] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(\read(pumpRunning)) [L706] CALL processEnvironment__wrappee__methaneQuery() [L662] int tmp ; [L665] COND FALSE !(\read(pumpRunning)) [L680] CALL processEnvironment__wrappee__highWaterSensor() [L636] int tmp ; [L639] COND TRUE ! pumpRunning [L641] CALL, EXPR isHighWaterLevel() [L802] int retValue_acc ; [L803] int tmp ; [L804] int tmp___0 ; [L808] CALL, EXPR isHighWaterSensorDry() [L944] int retValue_acc ; [L947] COND TRUE waterLevel < 2 [L948] retValue_acc = 1 [L949] return (retValue_acc); [L808] RET, EXPR isHighWaterSensorDry() [L808] tmp = isHighWaterSensorDry() [L810] COND TRUE \read(tmp) [L811] tmp___0 = 0 [L815] retValue_acc = tmp___0 [L816] return (retValue_acc); [L641] RET, EXPR isHighWaterLevel() [L641] tmp = isHighWaterLevel() [L643] COND FALSE !(\read(tmp)) [L649] FCALL processEnvironment__wrappee__base() [L680] RET processEnvironment__wrappee__highWaterSensor() [L706] RET processEnvironment__wrappee__methaneQuery() [L616] RET processEnvironment() [L622] CALL __utac_acc__Specification1_spec__1() [L100] int tmp ; [L101] int tmp___0 ; [L105] CALL, EXPR isMethaneLevelCritical() [L903] int retValue_acc ; [L906] retValue_acc = methaneLevelCritical [L907] return (retValue_acc); [L105] RET, EXPR isMethaneLevelCritical() [L105] tmp = isMethaneLevelCritical() [L107] COND FALSE !(\read(tmp)) [L622] RET __utac_acc__Specification1_spec__1() [L1024] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-02-21 04:15:54,068 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)