./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e630fd4f7f92b97a7712eadcda02cdabe0d357899fc48fb3e7885213e7a8b80 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:35:48,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:35:48,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:35:48,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:35:48,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:35:48,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:35:48,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:35:48,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:35:48,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:35:48,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:35:48,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:35:48,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:35:48,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:35:48,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:35:48,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:35:48,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:35:48,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:35:48,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:35:48,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:35:48,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:35:48,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:35:48,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:35:48,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:35:48,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:35:48,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:35:48,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:35:48,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:35:48,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:35:48,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:35:48,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:35:48,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:35:48,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:35:48,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:35:48,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:35:48,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:35:48,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:35:48,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:35:48,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:35:48,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:35:48,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:35:48,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:35:48,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:35:48,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:35:48,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:35:48,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:35:48,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:35:48,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:35:48,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:35:48,437 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:35:48,437 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:35:48,437 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:35:48,437 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:35:48,437 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:35:48,437 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:35:48,438 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:35:48,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:35:48,438 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:35:48,438 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:35:48,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:35:48,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:35:48,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:35:48,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:35:48,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:35:48,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:35:48,439 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:35:48,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:35:48,439 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:35:48,439 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:35:48,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:35:48,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:35:48,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:35:48,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:35:48,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:35:48,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:35:48,440 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:35:48,440 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e630fd4f7f92b97a7712eadcda02cdabe0d357899fc48fb3e7885213e7a8b80 [2021-12-21 22:35:48,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:35:48,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:35:48,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:35:48,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:35:48,670 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:35:48,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c [2021-12-21 22:35:48,731 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9221c75d7/9fef4feaacc64765a5c139300ab9f0a3/FLAG8481799fe [2021-12-21 22:35:49,087 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:35:49,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec5_product41.cil.c [2021-12-21 22:35:49,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9221c75d7/9fef4feaacc64765a5c139300ab9f0a3/FLAG8481799fe [2021-12-21 22:35:49,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9221c75d7/9fef4feaacc64765a5c139300ab9f0a3 [2021-12-21 22:35:49,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:35:49,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:35:49,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:35:49,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:35:49,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:35:49,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95cd245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49, skipping insertion in model container [2021-12-21 22:35:49,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:35:49,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:35:49,775 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_spec5_product41.cil.c[18234,18247] [2021-12-21 22:35:49,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:35:49,794 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:35:49,869 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_spec5_product41.cil.c[18234,18247] [2021-12-21 22:35:49,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:35:49,884 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:35:49,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49 WrapperNode [2021-12-21 22:35:49,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:35:49,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:35:49,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:35:49,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:35:49,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,951 INFO L137 Inliner]: procedures = 55, calls = 154, calls flagged for inlining = 51, calls inlined = 63, statements flattened = 492 [2021-12-21 22:35:49,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:35:49,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:35:49,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:35:49,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:35:49,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:49,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:35:49,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:35:49,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:35:49,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:35:50,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (1/1) ... [2021-12-21 22:35:50,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:35:50,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:35:50,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:35:50,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-21 22:35:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 22:35:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 22:35:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:35:50,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:35:50,152 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:35:50,153 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:35:50,453 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:35:50,459 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:35:50,460 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 22:35:50,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:35:50 BoogieIcfgContainer [2021-12-21 22:35:50,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:35:50,463 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:35:50,463 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:35:50,466 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:35:50,466 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:35:50,466 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:35:49" (1/3) ... [2021-12-21 22:35:50,467 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bb0d76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:35:50, skipping insertion in model container [2021-12-21 22:35:50,467 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:35:50,468 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:35:49" (2/3) ... [2021-12-21 22:35:50,468 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bb0d76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:35:50, skipping insertion in model container [2021-12-21 22:35:50,468 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:35:50,468 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:35:50" (3/3) ... [2021-12-21 22:35:50,469 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product41.cil.c [2021-12-21 22:35:50,504 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:35:50,504 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:35:50,504 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:35:50,505 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:35:50,505 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:35:50,505 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:35:50,505 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:35:50,505 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:35:50,519 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 127 states, 126 states have (on average 1.3650793650793651) internal successors, (172), 126 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:35:50,539 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 80 [2021-12-21 22:35:50,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:35:50,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:35:50,545 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:35:50,545 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:35:50,545 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:35:50,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 127 states, 126 states have (on average 1.3650793650793651) internal successors, (172), 126 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:35:50,552 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 80 [2021-12-21 22:35:50,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:35:50,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:35:50,553 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:35:50,553 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:35:50,557 INFO L791 eck$LassoCheckResult]: Stem: 119#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 44#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~3#1, main_~tmp~1#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 23#L933true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 101#L926true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 107#L941true main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 82#L291true assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 123#L263true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 106#L59true assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet25#1, test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 16#L490-2true [2021-12-21 22:35:50,558 INFO L793 eck$LassoCheckResult]: Loop: 16#L490-2true assume !false; 5#L491true assume test_~splverifierCounter~0#1 < 4; 116#L492true test_~tmp~5#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 117#L500true assume !(0 != test_~tmp~5#1); 120#L500-2true test_~tmp___0~2#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 87#L510true assume !(0 != test_~tmp___0~2#1); 9#L510-2true test_~tmp___2~0#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 46#L520true assume 0 != test_~tmp___2~0#1; 104#L526-2true assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~5#1;havoc isPumpRunning_~retValue_acc~5#1;isPumpRunning_~retValue_acc~5#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~5#1; 41#L420true __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 19#L69true assume { :end_inline___utac_acc__Specification5_spec__2 } true; 6#L317true assume !(0 != ~pumpRunning~0); 54#L317-2true assume !(0 != ~systemActive~0); 96#L324-1true assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 30#L183true __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 12#L80true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0#1); 114#L80-1true assume { :end_inline___utac_acc__Specification5_spec__3 } true; 34#L334true assume { :end_inline_timeShift } true; 16#L490-2true [2021-12-21 22:35:50,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 1 times [2021-12-21 22:35:50,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:50,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392569918] [2021-12-21 22:35:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:50,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:50,725 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:35:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:50,784 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:35:50,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash 722021324, now seen corresponding path program 1 times [2021-12-21 22:35:50,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:50,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479730300] [2021-12-21 22:35:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:50,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:50,810 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:35:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:50,821 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:35:50,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:50,826 INFO L85 PathProgramCache]: Analyzing trace with hash -617331083, now seen corresponding path program 1 times [2021-12-21 22:35:50,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:50,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086201156] [2021-12-21 22:35:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:50,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:35:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:35:50,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:35:50,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086201156] [2021-12-21 22:35:50,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086201156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:35:50,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:35:50,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 22:35:50,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323695658] [2021-12-21 22:35:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:35:51,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:35:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 22:35:51,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 22:35:51,181 INFO L87 Difference]: Start difference. First operand has 127 states, 126 states have (on average 1.3650793650793651) internal successors, (172), 126 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:35:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:35:51,264 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2021-12-21 22:35:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 22:35:51,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 158 transitions. [2021-12-21 22:35:51,280 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 76 [2021-12-21 22:35:51,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 114 states and 148 transitions. [2021-12-21 22:35:51,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 114 [2021-12-21 22:35:51,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 114 [2021-12-21 22:35:51,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 148 transitions. [2021-12-21 22:35:51,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:35:51,292 INFO L681 BuchiCegarLoop]: Abstraction has 114 states and 148 transitions. [2021-12-21 22:35:51,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 148 transitions. [2021-12-21 22:35:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2021-12-21 22:35:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 113 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:35:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 148 transitions. [2021-12-21 22:35:51,318 INFO L704 BuchiCegarLoop]: Abstraction has 114 states and 148 transitions. [2021-12-21 22:35:51,318 INFO L587 BuchiCegarLoop]: Abstraction has 114 states and 148 transitions. [2021-12-21 22:35:51,318 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:35:51,318 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 148 transitions. [2021-12-21 22:35:51,319 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 76 [2021-12-21 22:35:51,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:35:51,319 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:35:51,320 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:35:51,320 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:35:51,320 INFO L791 eck$LassoCheckResult]: Stem: 382#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 335#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~3#1, main_~tmp~1#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 312#L933 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 313#L926 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 376#L941 main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 368#L291 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 369#L263 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 378#L59 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet25#1, test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 299#L490-2 [2021-12-21 22:35:51,320 INFO L793 eck$LassoCheckResult]: Loop: 299#L490-2 assume !false; 272#L491 assume test_~splverifierCounter~0#1 < 4; 273#L492 test_~tmp~5#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 380#L500 assume !(0 != test_~tmp~5#1); 381#L500-2 test_~tmp___0~2#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 371#L510 assume !(0 != test_~tmp___0~2#1); 282#L510-2 test_~tmp___2~0#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 283#L520 assume 0 != test_~tmp___2~0#1; 337#L526-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~5#1;havoc isPumpRunning_~retValue_acc~5#1;isPumpRunning_~retValue_acc~5#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~5#1; 331#L420 __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 304#L69 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 275#L317 assume !(0 != ~pumpRunning~0); 277#L317-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret13#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 349#L349 assume !(0 == ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__base } true; 374#L341-1 assume { :end_inline_processEnvironment__wrappee__base } true; 317#L349-1 assume { :end_inline_processEnvironment } true; 318#L324-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 321#L183 __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 289#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0#1); 291#L80-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 326#L334 assume { :end_inline_timeShift } true; 299#L490-2 [2021-12-21 22:35:51,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:51,321 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 2 times [2021-12-21 22:35:51,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:51,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372233691] [2021-12-21 22:35:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:51,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,334 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:35:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,368 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:35:51,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:51,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1959665261, now seen corresponding path program 1 times [2021-12-21 22:35:51,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:51,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341717304] [2021-12-21 22:35:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:51,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:35:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:35:51,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:35:51,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341717304] [2021-12-21 22:35:51,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341717304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:35:51,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:35:51,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 22:35:51,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157084858] [2021-12-21 22:35:51,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:35:51,396 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:35:51,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:35:51,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 22:35:51,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 22:35:51,397 INFO L87 Difference]: Start difference. First operand 114 states and 148 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:35:51,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:35:51,456 INFO L93 Difference]: Finished difference Result 178 states and 225 transitions. [2021-12-21 22:35:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 22:35:51,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 225 transitions. [2021-12-21 22:35:51,459 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 124 [2021-12-21 22:35:51,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 178 states and 225 transitions. [2021-12-21 22:35:51,462 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-12-21 22:35:51,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 178 [2021-12-21 22:35:51,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 225 transitions. [2021-12-21 22:35:51,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:35:51,466 INFO L681 BuchiCegarLoop]: Abstraction has 178 states and 225 transitions. [2021-12-21 22:35:51,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 225 transitions. [2021-12-21 22:35:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-12-21 22:35:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 178 states have (on average 1.2640449438202248) internal successors, (225), 177 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:35:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 225 transitions. [2021-12-21 22:35:51,478 INFO L704 BuchiCegarLoop]: Abstraction has 178 states and 225 transitions. [2021-12-21 22:35:51,478 INFO L587 BuchiCegarLoop]: Abstraction has 178 states and 225 transitions. [2021-12-21 22:35:51,478 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:35:51,478 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 178 states and 225 transitions. [2021-12-21 22:35:51,481 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 124 [2021-12-21 22:35:51,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:35:51,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:35:51,483 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:35:51,483 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] [2021-12-21 22:35:51,484 INFO L791 eck$LassoCheckResult]: Stem: 696#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 636#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~3#1, main_~tmp~1#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 609#L933 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 610#L926 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 684#L941 main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 674#L291 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 675#L263 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 688#L59 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet25#1, test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 689#L490-2 [2021-12-21 22:35:51,484 INFO L793 eck$LassoCheckResult]: Loop: 689#L490-2 assume !false; 570#L491 assume test_~splverifierCounter~0#1 < 4; 571#L492 test_~tmp~5#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 728#L500 assume !(0 != test_~tmp~5#1); 726#L500-2 test_~tmp___0~2#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 724#L510 assume !(0 != test_~tmp___0~2#1); 722#L510-2 test_~tmp___2~0#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 720#L520 assume 0 != test_~tmp___2~0#1; 719#L526-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~5#1;havoc isPumpRunning_~retValue_acc~5#1;isPumpRunning_~retValue_acc~5#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~5#1; 718#L420 __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 601#L69 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 573#L317 assume !(0 != ~pumpRunning~0); 574#L317-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret13#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 649#L349 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret24#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 676#L191 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 663#L196 isHighWaterLevel_#t~ret24#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret24#1;havoc isHighWaterLevel_#t~ret24#1; 597#L469 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 598#L469-2 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 627#L475 processEnvironment_#t~ret13#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~2#1 := processEnvironment_#t~ret13#1;havoc processEnvironment_#t~ret13#1; 670#L353 assume !(0 != processEnvironment_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 682#L341 assume { :end_inline_processEnvironment__wrappee__base } true; 683#L349-1 assume { :end_inline_processEnvironment } true; 738#L324-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 737#L183 __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 735#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0#1); 732#L80-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 731#L334 assume { :end_inline_timeShift } true; 689#L490-2 [2021-12-21 22:35:51,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 3 times [2021-12-21 22:35:51,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:51,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918619519] [2021-12-21 22:35:51,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:51,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,502 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:35:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,524 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:35:51,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:51,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1929325451, now seen corresponding path program 1 times [2021-12-21 22:35:51,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:51,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794695728] [2021-12-21 22:35:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:51,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:35:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:35:51,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:35:51,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794695728] [2021-12-21 22:35:51,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794695728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:35:51,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:35:51,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 22:35:51,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410031689] [2021-12-21 22:35:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:35:51,573 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:35:51,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:35:51,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 22:35:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 22:35:51,574 INFO L87 Difference]: Start difference. First operand 178 states and 225 transitions. cyclomatic complexity: 49 Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:35:51,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:35:51,704 INFO L93 Difference]: Finished difference Result 481 states and 597 transitions. [2021-12-21 22:35:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 22:35:51,706 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 481 states and 597 transitions. [2021-12-21 22:35:51,711 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 315 [2021-12-21 22:35:51,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 481 states to 481 states and 597 transitions. [2021-12-21 22:35:51,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 481 [2021-12-21 22:35:51,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 481 [2021-12-21 22:35:51,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 481 states and 597 transitions. [2021-12-21 22:35:51,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:35:51,721 INFO L681 BuchiCegarLoop]: Abstraction has 481 states and 597 transitions. [2021-12-21 22:35:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states and 597 transitions. [2021-12-21 22:35:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 346. [2021-12-21 22:35:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 346 states have (on average 1.239884393063584) internal successors, (429), 345 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:35:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 429 transitions. [2021-12-21 22:35:51,750 INFO L704 BuchiCegarLoop]: Abstraction has 346 states and 429 transitions. [2021-12-21 22:35:51,750 INFO L587 BuchiCegarLoop]: Abstraction has 346 states and 429 transitions. [2021-12-21 22:35:51,750 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 22:35:51,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 346 states and 429 transitions. [2021-12-21 22:35:51,752 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 246 [2021-12-21 22:35:51,752 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:35:51,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:35:51,753 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:35:51,753 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] [2021-12-21 22:35:51,753 INFO L791 eck$LassoCheckResult]: Stem: 1372#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(31, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(13, 4);call #Ultimate.allocInit(7, 5);call write~init~int(44, 5, 0, 1);call write~init~int(77, 5, 1, 1);call write~init~int(101, 5, 2, 1);call write~init~int(116, 5, 3, 1);call write~init~int(104, 5, 4, 1);call write~init~int(58, 5, 5, 1);call write~init~int(0, 5, 6, 1);call #Ultimate.allocInit(5, 6);call write~init~int(67, 6, 0, 1);call write~init~int(82, 6, 1, 1);call write~init~int(73, 6, 2, 1);call write~init~int(84, 6, 3, 1);call write~init~int(0, 6, 4, 1);call #Ultimate.allocInit(3, 7);call write~init~int(79, 7, 0, 1);call write~init~int(75, 7, 1, 1);call write~init~int(0, 7, 2, 1);call #Ultimate.allocInit(2, 8);call write~init~int(41, 8, 0, 1);call write~init~int(0, 8, 1, 1);call #Ultimate.allocInit(13, 9);call #Ultimate.allocInit(3, 10);call write~init~int(79, 10, 0, 1);call write~init~int(110, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(4, 11);call write~init~int(79, 11, 0, 1);call write~init~int(102, 11, 1, 1);call write~init~int(102, 11, 2, 1);call write~init~int(0, 11, 3, 1);call #Ultimate.allocInit(7, 12);call write~init~int(44, 12, 0, 1);call write~init~int(80, 12, 1, 1);call write~init~int(117, 12, 2, 1);call write~init~int(109, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(3, 13);call write~init~int(79, 13, 0, 1);call write~init~int(110, 13, 1, 1);call write~init~int(0, 13, 2, 1);call #Ultimate.allocInit(4, 14);call write~init~int(79, 14, 0, 1);call write~init~int(102, 14, 1, 1);call write~init~int(102, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(3, 15);call write~init~int(41, 15, 0, 1);call write~init~int(32, 15, 1, 1);call write~init~int(0, 15, 2, 1);call #Ultimate.allocInit(2, 16);call write~init~int(10, 16, 0, 1);call write~init~int(0, 16, 1, 1);call #Ultimate.allocInit(30, 17);call #Ultimate.allocInit(9, 18);call #Ultimate.allocInit(21, 19);call #Ultimate.allocInit(30, 20);call #Ultimate.allocInit(9, 21);call #Ultimate.allocInit(21, 22);call #Ultimate.allocInit(30, 23);call #Ultimate.allocInit(9, 24);call #Ultimate.allocInit(25, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(25, 28);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 1309#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret12#1, main_~retValue_acc~3#1, main_~tmp~1#1;havoc main_~retValue_acc~3#1;havoc main_~tmp~1#1;assume { :begin_inline_select_helpers } true; 1282#L933 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1283#L926 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~11#1;havoc valid_product_~retValue_acc~11#1;valid_product_~retValue_acc~11#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~11#1; 1364#L941 main_#t~ret12#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~1#1 := main_#t~ret12#1;havoc main_#t~ret12#1; 1350#L291 assume 0 != main_~tmp~1#1;assume { :begin_inline_setup } true; 1351#L263 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline___utac_acc__Specification5_spec__1 } true;~switchedOnBeforeTS~0 := 0; 1367#L59 assume { :end_inline___utac_acc__Specification5_spec__1 } true;assume { :begin_inline_test } true;havoc test_#t~nondet25#1, test_#t~nondet26#1, test_#t~nondet27#1, test_#t~nondet28#1, test_~splverifierCounter~0#1, test_~tmp~5#1, test_~tmp___0~2#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~5#1;havoc test_~tmp___0~2#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1269#L490-2 [2021-12-21 22:35:51,753 INFO L793 eck$LassoCheckResult]: Loop: 1269#L490-2 assume !false; 1245#L491 assume test_~splverifierCounter~0#1 < 4; 1246#L492 test_~tmp~5#1 := test_#t~nondet25#1;havoc test_#t~nondet25#1; 1369#L500 assume !(0 != test_~tmp~5#1); 1370#L500-2 test_~tmp___0~2#1 := test_#t~nondet26#1;havoc test_#t~nondet26#1; 1357#L510 assume !(0 != test_~tmp___0~2#1); 1254#L510-2 test_~tmp___2~0#1 := test_#t~nondet27#1;havoc test_#t~nondet27#1; 1255#L520 assume 0 != test_~tmp___2~0#1; 1310#L526-2 assume { :begin_inline_timeShift } true;assume { :begin_inline___utac_acc__Specification5_spec__2 } true;havoc __utac_acc__Specification5_spec__2_#t~ret4#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~5#1;havoc isPumpRunning_~retValue_acc~5#1;isPumpRunning_~retValue_acc~5#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~5#1; 1366#L420 __utac_acc__Specification5_spec__2_#t~ret4#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret4#1;havoc __utac_acc__Specification5_spec__2_#t~ret4#1; 1580#L69 assume { :end_inline___utac_acc__Specification5_spec__2 } true; 1552#L317 assume !(0 != ~pumpRunning~0); 1551#L317-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret13#1, processEnvironment_~tmp~2#1;havoc processEnvironment_~tmp~2#1; 1359#L349 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret24#1, isHighWaterLevel_~retValue_acc~6#1, isHighWaterLevel_~tmp~4#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~6#1;havoc isHighWaterLevel_~tmp~4#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~2#1;havoc isHighWaterSensorDry_~retValue_acc~2#1; 1352#L191 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~2#1; 1339#L196 isHighWaterLevel_#t~ret24#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~4#1 := isHighWaterLevel_#t~ret24#1;havoc isHighWaterLevel_#t~ret24#1; 1270#L469 assume 0 != isHighWaterLevel_~tmp~4#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1271#L469-2 isHighWaterLevel_~retValue_acc~6#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~6#1; 1300#L475 processEnvironment_#t~ret13#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment_~tmp~2#1 := processEnvironment_#t~ret13#1;havoc processEnvironment_#t~ret13#1; 1346#L353 assume !(0 != processEnvironment_~tmp~2#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1360#L341 assume { :end_inline_processEnvironment__wrappee__base } true; 1361#L349-1 assume { :end_inline_processEnvironment } true; 1362#L324-1 assume { :begin_inline___utac_acc__Specification5_spec__3 } true;havoc __utac_acc__Specification5_spec__3_#t~ret5#1, __utac_acc__Specification5_spec__3_#t~ret6#1, __utac_acc__Specification5_spec__3_~tmp~0#1, __utac_acc__Specification5_spec__3_~tmp___0~0#1;havoc __utac_acc__Specification5_spec__3_~tmp~0#1;havoc __utac_acc__Specification5_spec__3_~tmp___0~0#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~1#1;havoc getWaterLevel_~retValue_acc~1#1;getWaterLevel_~retValue_acc~1#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~1#1; 1293#L183 __utac_acc__Specification5_spec__3_#t~ret5#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification5_spec__3_~tmp~0#1 := __utac_acc__Specification5_spec__3_#t~ret5#1;havoc __utac_acc__Specification5_spec__3_#t~ret5#1; 1261#L80 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0#1;assume { :begin_inline_isPumpRunning } true;havoc isPumpRunning_#res#1;havoc isPumpRunning_~retValue_acc~5#1;havoc isPumpRunning_~retValue_acc~5#1;isPumpRunning_~retValue_acc~5#1 := ~pumpRunning~0;isPumpRunning_#res#1 := isPumpRunning_~retValue_acc~5#1; 1262#L420-1 __utac_acc__Specification5_spec__3_#t~ret6#1 := isPumpRunning_#res#1;assume { :end_inline_isPumpRunning } true;__utac_acc__Specification5_spec__3_~tmp___0~0#1 := __utac_acc__Specification5_spec__3_#t~ret6#1;havoc __utac_acc__Specification5_spec__3_#t~ret6#1; 1371#L84 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0#1); 1302#L80-1 assume { :end_inline___utac_acc__Specification5_spec__3 } true; 1297#L334 assume { :end_inline_timeShift } true; 1269#L490-2 [2021-12-21 22:35:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:51,759 INFO L85 PathProgramCache]: Analyzing trace with hash 87859946, now seen corresponding path program 4 times [2021-12-21 22:35:51,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:51,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304982172] [2021-12-21 22:35:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:51,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,768 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:35:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,793 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:35:51,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:51,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1325015344, now seen corresponding path program 1 times [2021-12-21 22:35:51,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:51,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415261744] [2021-12-21 22:35:51,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:51,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,799 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:35:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,814 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:35:51,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:35:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2063535385, now seen corresponding path program 1 times [2021-12-21 22:35:51,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:35:51,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959863747] [2021-12-21 22:35:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:35:51,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:35:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,837 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:35:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:35:51,859 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:35:54,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:35:54 BoogieIcfgContainer [2021-12-21 22:35:54,598 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:35:54,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:35:54,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:35:54,599 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:35:54,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:35:50" (3/4) ... [2021-12-21 22:35:54,602 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-21 22:35:54,655 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 22:35:54,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:35:54,656 INFO L158 Benchmark]: Toolchain (without parser) took 5175.02ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 74.6MB in the beginning and 77.6MB in the end (delta: -3.0MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2021-12-21 22:35:54,656 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 92.3MB in the beginning and 92.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:35:54,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.81ms. Allocated memory is still 113.2MB. Free memory was 74.5MB in the beginning and 80.3MB in the end (delta: -5.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 22:35:54,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.18ms. Allocated memory is still 113.2MB. Free memory was 80.3MB in the beginning and 77.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:35:54,657 INFO L158 Benchmark]: Boogie Preprocessor took 44.30ms. Allocated memory is still 113.2MB. Free memory was 77.2MB in the beginning and 75.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:35:54,658 INFO L158 Benchmark]: RCFGBuilder took 464.11ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 56.3MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-21 22:35:54,658 INFO L158 Benchmark]: BuchiAutomizer took 4135.51ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 56.3MB in the beginning and 80.7MB in the end (delta: -24.5MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2021-12-21 22:35:54,659 INFO L158 Benchmark]: Witness Printer took 56.48ms. Allocated memory is still 163.6MB. Free memory was 80.7MB in the beginning and 77.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 22:35:54,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 92.3MB in the beginning and 92.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.81ms. Allocated memory is still 113.2MB. Free memory was 74.5MB in the beginning and 80.3MB in the end (delta: -5.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.18ms. Allocated memory is still 113.2MB. Free memory was 80.3MB in the beginning and 77.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.30ms. Allocated memory is still 113.2MB. Free memory was 77.2MB in the beginning and 75.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 464.11ms. Allocated memory is still 113.2MB. Free memory was 75.1MB in the beginning and 56.3MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 4135.51ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 56.3MB in the beginning and 80.7MB in the end (delta: -24.5MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. * Witness Printer took 56.48ms. Allocated memory is still 163.6MB. Free memory was 80.7MB in the beginning and 77.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 346 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 135 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 346 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1199 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1199 mSDsluCounter, 1041 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 534 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 507 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 490]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {splverifierCounter=0, NULL=0, tmp___0=0, head=0, pumpRunning=0, tmp___0=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a54a98e=0, NULL=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@c0bd957=0, methaneLevelCritical=0, retValue_acc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@104643d4=0, retValue_acc=1, \result=1, \result=1, tmp=1, tmp=1, tmp___2=29, \result=0, cleanupTimeShifts=4, switchedOnBeforeTS=0, \result=0, tmp=1, tmp=0, tmp___0=0, head=0, \result=1, tmp___1=0, NULL=0, retValue_acc=0, waterLevel=1, systemActive=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40780943=0, retValue_acc=1, tmp=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4183b14d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7319e8f9=29, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@38ac8d9d=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24a5c64e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2615b353=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b1c1e20=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 490]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int switchedOnBeforeTS ; [L108] int waterLevel = 1; [L109] int methaneLevelCritical = 0; [L202] int cleanupTimeShifts = 4; [L307] int pumpRunning = 0; [L308] int systemActive = 1; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L282] int retValue_acc ; [L283] int tmp ; [L287] FCALL select_helpers() [L288] FCALL select_features() [L289] CALL, EXPR valid_product() [L937] int retValue_acc ; [L940] retValue_acc = 1 [L941] return (retValue_acc); [L289] RET, EXPR valid_product() [L289] tmp = valid_product() [L291] COND TRUE \read(tmp) [L293] FCALL setup() [L294] CALL runTest() [L272] CALL __utac_acc__Specification5_spec__1() [L58] switchedOnBeforeTS = 0 [L272] RET __utac_acc__Specification5_spec__1() [L273] CALL test() [L481] int splverifierCounter ; [L482] int tmp ; [L483] int tmp___0 ; [L484] int tmp___1 ; [L485] int tmp___2 ; [L488] splverifierCounter = 0 Loop: [L490] COND TRUE 1 [L492] COND TRUE splverifierCounter < 4 [L498] tmp = __VERIFIER_nondet_int() [L500] COND FALSE !(\read(tmp)) [L508] tmp___0 = __VERIFIER_nondet_int() [L510] COND FALSE !(\read(tmp___0)) [L518] tmp___2 = __VERIFIER_nondet_int() [L520] COND TRUE \read(tmp___2) [L533] CALL timeShift() [L315] CALL __utac_acc__Specification5_spec__2() [L67] CALL, EXPR isPumpRunning() [L416] int retValue_acc ; [L419] retValue_acc = pumpRunning [L420] return (retValue_acc); [L67] RET, EXPR isPumpRunning() [L67] switchedOnBeforeTS = isPumpRunning() [L315] RET __utac_acc__Specification5_spec__2() [L317] COND FALSE !(\read(pumpRunning)) [L324] COND TRUE \read(systemActive) [L326] CALL processEnvironment() [L346] int tmp ; [L349] COND TRUE ! pumpRunning [L351] CALL, EXPR isHighWaterLevel() [L461] int retValue_acc ; [L462] int tmp ; [L463] int tmp___0 ; [L467] CALL, EXPR isHighWaterSensorDry() [L188] int retValue_acc ; [L191] COND TRUE waterLevel < 2 [L192] retValue_acc = 1 [L193] return (retValue_acc); [L467] RET, EXPR isHighWaterSensorDry() [L467] tmp = isHighWaterSensorDry() [L469] COND TRUE \read(tmp) [L470] tmp___0 = 0 [L474] retValue_acc = tmp___0 [L475] return (retValue_acc); [L351] RET, EXPR isHighWaterLevel() [L351] tmp = isHighWaterLevel() [L353] COND FALSE !(\read(tmp)) [L359] FCALL processEnvironment__wrappee__base() [L326] RET processEnvironment() [L332] CALL __utac_acc__Specification5_spec__3() [L73] int tmp ; [L74] int tmp___0 ; [L78] CALL, EXPR getWaterLevel() [L179] int retValue_acc ; [L182] retValue_acc = waterLevel [L183] return (retValue_acc); [L78] RET, EXPR getWaterLevel() [L78] tmp = getWaterLevel() [L80] COND TRUE tmp != 2 [L82] CALL, EXPR isPumpRunning() [L416] int retValue_acc ; [L419] retValue_acc = pumpRunning [L420] return (retValue_acc); [L82] RET, EXPR isPumpRunning() [L82] tmp___0 = isPumpRunning() [L84] COND FALSE !(\read(tmp___0)) [L332] RET __utac_acc__Specification5_spec__3() [L533] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-21 22:35:54,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- 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)