./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y --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 e91d5c860cfea17112af53939b2fffb1e4c536355098377ab18c754994d1bc2b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:26:04,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:26:04,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:26:04,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:26:04,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:26:04,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:26:04,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:26:04,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:26:04,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:26:04,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:26:04,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:26:04,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:26:04,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:26:04,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:26:04,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:26:04,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:26:04,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:26:04,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:26:04,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:26:04,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:26:04,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:26:04,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:26:04,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:26:04,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:26:04,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:26:04,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:26:04,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:26:04,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:26:04,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:26:04,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:26:04,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:26:04,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:26:04,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:26:04,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:26:04,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:26:04,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:26:04,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:26:04,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:26:04,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:26:04,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:26:04,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:26:04,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-13 18:26:04,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:26:04,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:26:04,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:26:04,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:26:04,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:26:04,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:26:04,416 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:26:04,416 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-13 18:26:04,416 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-13 18:26:04,416 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-13 18:26:04,417 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-13 18:26:04,417 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-13 18:26:04,417 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-13 18:26:04,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:26:04,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:26:04,418 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:26:04,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:26:04,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:26:04,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:26:04,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-13 18:26:04,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-13 18:26:04,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-13 18:26:04,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:26:04,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:26:04,420 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-13 18:26:04,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:26:04,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-13 18:26:04,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:26:04,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:26:04,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:26:04,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:26:04,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:26:04,425 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-13 18:26:04,425 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e91d5c860cfea17112af53939b2fffb1e4c536355098377ab18c754994d1bc2b [2021-11-13 18:26:04,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:26:04,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:26:04,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:26:04,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:26:04,758 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:26:04,760 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c [2021-11-13 18:26:04,840 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/data/1bd2285de/ffce751c8f4440cab53051071807f8dc/FLAG9541fcd41 [2021-11-13 18:26:05,496 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:26:05,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c [2021-11-13 18:26:05,521 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/data/1bd2285de/ffce751c8f4440cab53051071807f8dc/FLAG9541fcd41 [2021-11-13 18:26:05,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/data/1bd2285de/ffce751c8f4440cab53051071807f8dc [2021-11-13 18:26:05,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:26:05,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:26:05,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:26:05,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:26:05,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:26:05,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:26:05" (1/1) ... [2021-11-13 18:26:05,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec88c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:05, skipping insertion in model container [2021-11-13 18:26:05,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:26:05" (1/1) ... [2021-11-13 18:26:05,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:26:05,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:26:06,275 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c[15987,16000] [2021-11-13 18:26:06,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:26:06,310 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:26:06,384 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/sv-benchmarks/c/product-lines/minepump_spec4_product53.cil.c[15987,16000] [2021-11-13 18:26:06,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:26:06,439 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:26:06,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06 WrapperNode [2021-11-13 18:26:06,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:26:06,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:26:06,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:26:06,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:26:06,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:26:06,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:26:06,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:26:06,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:26:06,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:26:06,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:26:06,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:26:06,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:26:06,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (1/1) ... [2021-11-13 18:26:06,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:26:06,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:26:06,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:26:06,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-13 18:26:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:26:06,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:26:06,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:26:06,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:26:08,152 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:26:08,153 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 18:26:08,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:26:08 BoogieIcfgContainer [2021-11-13 18:26:08,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:26:08,157 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-13 18:26:08,157 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-13 18:26:08,162 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-13 18:26:08,163 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:26:08,163 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.11 06:26:05" (1/3) ... [2021-11-13 18:26:08,165 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1cd0a440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:26:08, skipping insertion in model container [2021-11-13 18:26:08,165 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:26:08,165 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:26:06" (2/3) ... [2021-11-13 18:26:08,165 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1cd0a440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:26:08, skipping insertion in model container [2021-11-13 18:26:08,166 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:26:08,166 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:26:08" (3/3) ... [2021-11-13 18:26:08,167 INFO L388 chiAutomizerObserver]: Analyzing ICFG minepump_spec4_product53.cil.c [2021-11-13 18:26:08,222 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-13 18:26:08,223 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-13 18:26:08,223 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-13 18:26:08,223 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-13 18:26:08,224 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-13 18:26:08,224 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-13 18:26:08,224 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-13 18:26:08,224 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-13 18:26:08,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 270 states, 269 states have (on average 1.3717472118959109) internal successors, (369), 269 states have internal predecessors, (369), 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) [2021-11-13 18:26:08,343 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 176 [2021-11-13 18:26:08,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:26:08,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:26:08,353 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:08,353 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:08,354 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-13 18:26:08,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 270 states, 269 states have (on average 1.3717472118959109) internal successors, (369), 269 states have internal predecessors, (369), 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) [2021-11-13 18:26:08,380 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 176 [2021-11-13 18:26:08,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:26:08,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:26:08,386 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:08,386 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:08,392 INFO L791 eck$LassoCheckResult]: Stem: 255#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 172#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret81#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 191#L743true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 168#L736true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 27#L751true main_#t~ret81#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret81#1;havoc main_#t~ret81#1; 237#L977true assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 268#L954true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet42#1, test_#t~nondet43#1, test_#t~nondet44#1, test_#t~nondet45#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 182#L430-2true [2021-11-13 18:26:08,393 INFO L793 eck$LassoCheckResult]: Loop: 182#L430-2true assume !false; 267#L431true assume test_~splverifierCounter~0#1 < 4; 222#L432true test_~tmp~3#1 := test_#t~nondet42#1;havoc test_#t~nondet42#1; 233#L440true assume !(0 != test_~tmp~3#1); 232#L440-2true test_~tmp___0~0#1 := test_#t~nondet43#1;havoc test_#t~nondet43#1; 86#L450true assume !(0 != test_~tmp___0~0#1); 23#L450-2true test_~tmp___2~0#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 53#L460true assume 0 != test_~tmp___2~0#1; 76#L466-2true assume { :begin_inline_timeShift } true; 36#L502true assume !(0 != ~pumpRunning~0); 126#L502-2true assume !(0 != ~systemActive~0); 216#L509-1true assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret79#1, __utac_acc__Specification4_spec__1_#t~ret80#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~10#1;havoc getWaterLevel_~retValue_acc~10#1;getWaterLevel_~retValue_acc~10#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~10#1; 211#L841true __utac_acc__Specification4_spec__1_#t~ret79#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret79#1;havoc __utac_acc__Specification4_spec__1_#t~ret79#1; 22#L877true assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); 271#L877-1true assume { :end_inline___utac_acc__Specification4_spec__1 } true; 220#L519true assume { :end_inline_timeShift } true; 182#L430-2true [2021-11-13 18:26:08,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 1 times [2021-11-13 18:26:08,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:08,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657400511] [2021-11-13 18:26:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:08,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:08,837 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:26:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:09,064 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:26:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:09,068 INFO L85 PathProgramCache]: Analyzing trace with hash 408252804, now seen corresponding path program 1 times [2021-11-13 18:26:09,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:09,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798050473] [2021-11-13 18:26:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:09,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:09,077 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:26:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:09,090 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:26:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1763671880, now seen corresponding path program 1 times [2021-11-13 18:26:09,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:09,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228813493] [2021-11-13 18:26:09,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:09,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:09,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:26:09,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228813493] [2021-11-13 18:26:09,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228813493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:09,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:09,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:26:09,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168160591] [2021-11-13 18:26:09,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:09,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:26:09,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:26:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:26:09,556 INFO L87 Difference]: Start difference. First operand has 270 states, 269 states have (on average 1.3717472118959109) internal successors, (369), 269 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:26:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:09,827 INFO L93 Difference]: Finished difference Result 267 states and 355 transitions. [2021-11-13 18:26:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:26:09,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 267 states and 355 transitions. [2021-11-13 18:26:09,840 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 172 [2021-11-13 18:26:09,848 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 267 states to 257 states and 345 transitions. [2021-11-13 18:26:09,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 257 [2021-11-13 18:26:09,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2021-11-13 18:26:09,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 257 states and 345 transitions. [2021-11-13 18:26:09,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:26:09,854 INFO L681 BuchiCegarLoop]: Abstraction has 257 states and 345 transitions. [2021-11-13 18:26:09,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states and 345 transitions. [2021-11-13 18:26:09,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2021-11-13 18:26:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 257 states have (on average 1.3424124513618676) internal successors, (345), 256 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:26:09,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 345 transitions. [2021-11-13 18:26:09,902 INFO L704 BuchiCegarLoop]: Abstraction has 257 states and 345 transitions. [2021-11-13 18:26:09,902 INFO L587 BuchiCegarLoop]: Abstraction has 257 states and 345 transitions. [2021-11-13 18:26:09,902 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-13 18:26:09,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 257 states and 345 transitions. [2021-11-13 18:26:09,905 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 172 [2021-11-13 18:26:09,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:26:09,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:26:09,907 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:09,907 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:09,907 INFO L791 eck$LassoCheckResult]: Stem: 811#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 781#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret81#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 782#L743 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 776#L736 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 607#L751 main_#t~ret81#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret81#1;havoc main_#t~ret81#1; 608#L977 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 809#L954 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet42#1, test_#t~nondet43#1, test_#t~nondet44#1, test_#t~nondet45#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 789#L430-2 [2021-11-13 18:26:09,908 INFO L793 eck$LassoCheckResult]: Loop: 789#L430-2 assume !false; 790#L431 assume test_~splverifierCounter~0#1 < 4; 804#L432 test_~tmp~3#1 := test_#t~nondet42#1;havoc test_#t~nondet42#1; 805#L440 assume !(0 != test_~tmp~3#1); 656#L440-2 test_~tmp___0~0#1 := test_#t~nondet43#1;havoc test_#t~nondet43#1; 692#L450 assume !(0 != test_~tmp___0~0#1); 598#L450-2 test_~tmp___2~0#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 599#L460 assume 0 != test_~tmp___2~0#1; 652#L466-2 assume { :begin_inline_timeShift } true; 621#L502 assume !(0 != ~pumpRunning~0); 622#L502-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret48#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 716#L586 assume 0 != ~pumpRunning~0;assume { :begin_inline_isMethaneAlarm } true;havoc isMethaneAlarm_#res#1;havoc isMethaneAlarm_#t~ret49#1, isMethaneAlarm_~retValue_acc~3#1;havoc isMethaneAlarm_~retValue_acc~3#1;assume { :begin_inline_isMethaneLevelCritical } true;havoc isMethaneLevelCritical_#res#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;havoc isMethaneLevelCritical_~retValue_acc~9#1;isMethaneLevelCritical_~retValue_acc~9#1 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res#1 := isMethaneLevelCritical_~retValue_acc~9#1; 717#L809 isMethaneAlarm_#t~ret49#1 := isMethaneLevelCritical_#res#1;assume { :end_inline_isMethaneLevelCritical } true;isMethaneAlarm_~retValue_acc~3#1 := isMethaneAlarm_#t~ret49#1;havoc isMethaneAlarm_#t~ret49#1;isMethaneAlarm_#res#1 := isMethaneAlarm_~retValue_acc~3#1; 680#L630 processEnvironment_#t~ret48#1 := isMethaneAlarm_#res#1;assume { :end_inline_isMethaneAlarm } true;processEnvironment_~tmp~6#1 := processEnvironment_#t~ret48#1;havoc processEnvironment_#t~ret48#1; 633#L590 assume 0 != processEnvironment_~tmp~6#1;assume { :begin_inline_deactivatePump } true;~pumpRunning~0 := 0; 634#L620 assume { :end_inline_deactivatePump } true; 645#L586-1 assume { :end_inline_processEnvironment } true; 767#L509-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret79#1, __utac_acc__Specification4_spec__1_#t~ret80#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~10#1;havoc getWaterLevel_~retValue_acc~10#1;getWaterLevel_~retValue_acc~10#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~10#1; 800#L841 __utac_acc__Specification4_spec__1_#t~ret79#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret79#1;havoc __utac_acc__Specification4_spec__1_#t~ret79#1; 595#L877 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); 596#L877-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 803#L519 assume { :end_inline_timeShift } true; 789#L430-2 [2021-11-13 18:26:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 2 times [2021-11-13 18:26:09,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:09,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113137802] [2021-11-13 18:26:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:09,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:09,970 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:26:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:10,043 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:26:10,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash -49321715, now seen corresponding path program 1 times [2021-11-13 18:26:10,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:10,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924870348] [2021-11-13 18:26:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:10,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:10,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:26:10,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924870348] [2021-11-13 18:26:10,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924870348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:10,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:10,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:26:10,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250445561] [2021-11-13 18:26:10,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:10,074 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:26:10,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:26:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:26:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:26:10,076 INFO L87 Difference]: Start difference. First operand 257 states and 345 transitions. cyclomatic complexity: 90 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:26:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:10,312 INFO L93 Difference]: Finished difference Result 267 states and 338 transitions. [2021-11-13 18:26:10,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:26:10,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 267 states and 338 transitions. [2021-11-13 18:26:10,318 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 184 [2021-11-13 18:26:10,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 267 states to 267 states and 338 transitions. [2021-11-13 18:26:10,332 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 267 [2021-11-13 18:26:10,333 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 267 [2021-11-13 18:26:10,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 267 states and 338 transitions. [2021-11-13 18:26:10,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:26:10,337 INFO L681 BuchiCegarLoop]: Abstraction has 267 states and 338 transitions. [2021-11-13 18:26:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states and 338 transitions. [2021-11-13 18:26:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-11-13 18:26:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 267 states have (on average 1.2659176029962547) internal successors, (338), 266 states have internal predecessors, (338), 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) [2021-11-13 18:26:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 338 transitions. [2021-11-13 18:26:10,365 INFO L704 BuchiCegarLoop]: Abstraction has 267 states and 338 transitions. [2021-11-13 18:26:10,365 INFO L587 BuchiCegarLoop]: Abstraction has 267 states and 338 transitions. [2021-11-13 18:26:10,365 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-13 18:26:10,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 267 states and 338 transitions. [2021-11-13 18:26:10,369 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 184 [2021-11-13 18:26:10,370 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:26:10,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:26:10,371 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:10,371 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] [2021-11-13 18:26:10,372 INFO L791 eck$LassoCheckResult]: Stem: 1297#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 1258#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret81#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 1259#L743 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 1254#L736 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 1127#L751 main_#t~ret81#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret81#1;havoc main_#t~ret81#1; 1128#L977 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 1292#L954 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet42#1, test_#t~nondet43#1, test_#t~nondet44#1, test_#t~nondet45#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 1266#L430-2 [2021-11-13 18:26:10,372 INFO L793 eck$LassoCheckResult]: Loop: 1266#L430-2 assume !false; 1267#L431 assume test_~splverifierCounter~0#1 < 4; 1286#L432 test_~tmp~3#1 := test_#t~nondet42#1;havoc test_#t~nondet42#1; 1287#L440 assume !(0 != test_~tmp~3#1); 1163#L440-2 test_~tmp___0~0#1 := test_#t~nondet43#1;havoc test_#t~nondet43#1; 1187#L450 assume !(0 != test_~tmp___0~0#1); 1119#L450-2 test_~tmp___2~0#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 1120#L460 assume 0 != test_~tmp___2~0#1; 1159#L466-2 assume { :begin_inline_timeShift } true; 1132#L502 assume !(0 != ~pumpRunning~0); 1133#L502-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret48#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 1200#L586 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret47#1, processEnvironment__wrappee__lowWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5#1; 1191#L560-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret46#1, processEnvironment__wrappee__highWaterSensor_~tmp~4#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4#1; 1096#L534-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret66#1, isHighWaterLevel_~retValue_acc~5#1, isHighWaterLevel_~tmp~7#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~5#1;havoc isHighWaterLevel_~tmp~7#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~11#1;havoc isHighWaterSensorDry_~retValue_acc~11#1; 1097#L849-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~11#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~11#1; 1240#L854-3 isHighWaterLevel_#t~ret66#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~7#1 := isHighWaterLevel_#t~ret66#1;havoc isHighWaterLevel_#t~ret66#1; 1288#L688-9 assume 0 != isHighWaterLevel_~tmp~7#1;isHighWaterLevel_~tmp___0~1#1 := 0; 1172#L688-11 isHighWaterLevel_~retValue_acc~5#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~5#1; 1173#L694-3 processEnvironment__wrappee__highWaterSensor_#t~ret46#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~4#1 := processEnvironment__wrappee__highWaterSensor_#t~ret46#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret46#1; 1236#L538-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 1237#L526-6 assume { :end_inline_processEnvironment__wrappee__base } true; 1134#L534-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 1135#L560-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 1152#L586-1 assume { :end_inline_processEnvironment } true; 1243#L509-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret79#1, __utac_acc__Specification4_spec__1_#t~ret80#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~10#1;havoc getWaterLevel_~retValue_acc~10#1;getWaterLevel_~retValue_acc~10#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~10#1; 1279#L841 __utac_acc__Specification4_spec__1_#t~ret79#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret79#1;havoc __utac_acc__Specification4_spec__1_#t~ret79#1; 1116#L877 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); 1117#L877-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 1283#L519 assume { :end_inline_timeShift } true; 1266#L430-2 [2021-11-13 18:26:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:10,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 3 times [2021-11-13 18:26:10,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:10,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825543587] [2021-11-13 18:26:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:10,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:10,444 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:26:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:10,542 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:26:10,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:10,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1895097644, now seen corresponding path program 1 times [2021-11-13 18:26:10,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:10,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825250412] [2021-11-13 18:26:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:10,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:10,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:26:10,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825250412] [2021-11-13 18:26:10,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825250412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:10,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:10,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:26:10,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188859232] [2021-11-13 18:26:10,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:10,600 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:26:10,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:26:10,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:26:10,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:26:10,601 INFO L87 Difference]: Start difference. First operand 267 states and 338 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-11-13 18:26:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:10,821 INFO L93 Difference]: Finished difference Result 751 states and 928 transitions. [2021-11-13 18:26:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:26:10,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 751 states and 928 transitions. [2021-11-13 18:26:10,837 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 528 [2021-11-13 18:26:10,846 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 751 states to 751 states and 928 transitions. [2021-11-13 18:26:10,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 751 [2021-11-13 18:26:10,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 751 [2021-11-13 18:26:10,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 751 states and 928 transitions. [2021-11-13 18:26:10,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:26:10,859 INFO L681 BuchiCegarLoop]: Abstraction has 751 states and 928 transitions. [2021-11-13 18:26:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states and 928 transitions. [2021-11-13 18:26:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 285. [2021-11-13 18:26:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 285 states have (on average 1.249122807017544) internal successors, (356), 284 states have internal predecessors, (356), 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) [2021-11-13 18:26:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 356 transitions. [2021-11-13 18:26:10,895 INFO L704 BuchiCegarLoop]: Abstraction has 285 states and 356 transitions. [2021-11-13 18:26:10,896 INFO L587 BuchiCegarLoop]: Abstraction has 285 states and 356 transitions. [2021-11-13 18:26:10,896 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-13 18:26:10,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 285 states and 356 transitions. [2021-11-13 18:26:10,899 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 196 [2021-11-13 18:26:10,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:26:10,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:26:10,903 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:10,903 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] [2021-11-13 18:26:10,904 INFO L791 eck$LassoCheckResult]: Stem: 2345#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 2291#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret81#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 2292#L743 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 2286#L736 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 2156#L751 main_#t~ret81#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret81#1;havoc main_#t~ret81#1; 2157#L977 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 2338#L954 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet42#1, test_#t~nondet43#1, test_#t~nondet44#1, test_#t~nondet45#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 2351#L430-2 [2021-11-13 18:26:10,904 INFO L793 eck$LassoCheckResult]: Loop: 2351#L430-2 assume !false; 2361#L431 assume test_~splverifierCounter~0#1 < 4; 2362#L432 test_~tmp~3#1 := test_#t~nondet42#1;havoc test_#t~nondet42#1; 2334#L440 assume !(0 != test_~tmp~3#1); 2192#L440-2 test_~tmp___0~0#1 := test_#t~nondet43#1;havoc test_#t~nondet43#1; 2217#L450 assume !(0 != test_~tmp___0~0#1); 2148#L450-2 test_~tmp___2~0#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 2149#L460 assume 0 != test_~tmp___2~0#1; 2188#L466-2 assume { :begin_inline_timeShift } true; 2161#L502 assume !(0 != ~pumpRunning~0); 2162#L502-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret48#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 2231#L586 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret47#1, processEnvironment__wrappee__lowWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5#1; 2222#L560-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret46#1, processEnvironment__wrappee__highWaterSensor_~tmp~4#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4#1; 2124#L534-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret66#1, isHighWaterLevel_~retValue_acc~5#1, isHighWaterLevel_~tmp~7#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~5#1;havoc isHighWaterLevel_~tmp~7#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~11#1;havoc isHighWaterSensorDry_~retValue_acc~11#1; 2125#L849-3 assume !(~waterLevel~0 < 2);isHighWaterSensorDry_~retValue_acc~11#1 := 0;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~11#1; 2270#L854-3 isHighWaterLevel_#t~ret66#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~7#1 := isHighWaterLevel_#t~ret66#1;havoc isHighWaterLevel_#t~ret66#1; 2343#L688-9 assume !(0 != isHighWaterLevel_~tmp~7#1);isHighWaterLevel_~tmp___0~1#1 := 1; 2201#L688-11 isHighWaterLevel_~retValue_acc~5#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~5#1; 2202#L694-3 processEnvironment__wrappee__highWaterSensor_#t~ret46#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~4#1 := processEnvironment__wrappee__highWaterSensor_#t~ret46#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret46#1; 2265#L538-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 2266#L526-6 assume { :end_inline_processEnvironment__wrappee__base } true; 2296#L534-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 2397#L560-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 2181#L586-1 assume { :end_inline_processEnvironment } true; 2396#L509-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret79#1, __utac_acc__Specification4_spec__1_#t~ret80#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~10#1;havoc getWaterLevel_~retValue_acc~10#1;getWaterLevel_~retValue_acc~10#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~10#1; 2395#L841 __utac_acc__Specification4_spec__1_#t~ret79#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret79#1;havoc __utac_acc__Specification4_spec__1_#t~ret79#1; 2366#L877 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); 2364#L877-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 2363#L519 assume { :end_inline_timeShift } true; 2351#L430-2 [2021-11-13 18:26:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 4 times [2021-11-13 18:26:10,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:10,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667922072] [2021-11-13 18:26:10,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:10,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:10,964 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:26:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:11,014 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:26:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1308291630, now seen corresponding path program 1 times [2021-11-13 18:26:11,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:11,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007133592] [2021-11-13 18:26:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:11,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:26:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:26:11,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:26:11,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007133592] [2021-11-13 18:26:11,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007133592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:26:11,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:26:11,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:26:11,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871999315] [2021-11-13 18:26:11,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:26:11,080 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:26:11,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:26:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:26:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:26:11,086 INFO L87 Difference]: Start difference. First operand 285 states and 356 transitions. cyclomatic complexity: 73 Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2021-11-13 18:26:11,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:26:11,314 INFO L93 Difference]: Finished difference Result 807 states and 1004 transitions. [2021-11-13 18:26:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:26:11,315 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 807 states and 1004 transitions. [2021-11-13 18:26:11,324 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 576 [2021-11-13 18:26:11,339 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 807 states to 807 states and 1004 transitions. [2021-11-13 18:26:11,339 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 807 [2021-11-13 18:26:11,340 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 807 [2021-11-13 18:26:11,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 807 states and 1004 transitions. [2021-11-13 18:26:11,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:26:11,343 INFO L681 BuchiCegarLoop]: Abstraction has 807 states and 1004 transitions. [2021-11-13 18:26:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states and 1004 transitions. [2021-11-13 18:26:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 312. [2021-11-13 18:26:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 312 states have (on average 1.2275641025641026) internal successors, (383), 311 states have internal predecessors, (383), 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) [2021-11-13 18:26:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 383 transitions. [2021-11-13 18:26:11,365 INFO L704 BuchiCegarLoop]: Abstraction has 312 states and 383 transitions. [2021-11-13 18:26:11,365 INFO L587 BuchiCegarLoop]: Abstraction has 312 states and 383 transitions. [2021-11-13 18:26:11,365 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-13 18:26:11,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 312 states and 383 transitions. [2021-11-13 18:26:11,368 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 214 [2021-11-13 18:26:11,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:26:11,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:26:11,370 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:26:11,370 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] [2021-11-13 18:26:11,370 INFO L791 eck$LassoCheckResult]: Stem: 3458#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string53.base, #t~string53.offset, 1);call write~init~int(110, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 2 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string55.base, #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(102, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 3 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string57.base, #t~string57.offset, 1);call write~init~int(80, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(117, #t~string57.base, 2 + #t~string57.offset, 1);call write~init~int(109, #t~string57.base, 3 + #t~string57.offset, 1);call write~init~int(112, #t~string57.base, 4 + #t~string57.offset, 1);call write~init~int(58, #t~string57.base, 5 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 6 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string59.base, #t~string59.offset, 1);call write~init~int(110, #t~string59.base, 1 + #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 2 + #t~string59.offset, 1);call #t~string61.base, #t~string61.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string61.base, #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 1 + #t~string61.offset, 1);call write~init~int(102, #t~string61.base, 2 + #t~string61.offset, 1);call write~init~int(0, #t~string61.base, 3 + #t~string61.offset, 1);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string63.base, #t~string63.offset, 1);call write~init~int(32, #t~string63.base, 1 + #t~string63.offset, 1);call write~init~int(0, #t~string63.base, 2 + #t~string63.offset, 1);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string65.base, #t~string65.offset, 1);call write~init~int(0, #t~string65.base, 1 + #t~string65.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(77, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(101, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(116, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(104, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string74.base, #t~string74.offset, 1);call write~init~int(82, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(73, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(84, #t~string74.base, 3 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 4 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(75, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 2 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 1 + #t~string78.offset, 1);~head~0.base, ~head~0.offset := 0, 0;~pumpRunning~0 := 0;~systemActive~0 := 1;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4; 3396#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret81#1, main_~retValue_acc~13#1, main_~tmp~10#1;havoc main_~retValue_acc~13#1;havoc main_~tmp~10#1;assume { :begin_inline_select_helpers } true; 3397#L743 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 3391#L736 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~8#1;havoc valid_product_~retValue_acc~8#1;valid_product_~retValue_acc~8#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~8#1; 3261#L751 main_#t~ret81#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~10#1 := main_#t~ret81#1;havoc main_#t~ret81#1; 3262#L977 assume 0 != main_~tmp~10#1;assume { :begin_inline_setup } true; 3448#L954 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;havoc test_#t~nondet42#1, test_#t~nondet43#1, test_#t~nondet44#1, test_#t~nondet45#1, test_~splverifierCounter~0#1, test_~tmp~3#1, test_~tmp___0~0#1, test_~tmp___1~0#1, test_~tmp___2~0#1;havoc test_~splverifierCounter~0#1;havoc test_~tmp~3#1;havoc test_~tmp___0~0#1;havoc test_~tmp___1~0#1;havoc test_~tmp___2~0#1;test_~splverifierCounter~0#1 := 0; 3463#L430-2 [2021-11-13 18:26:11,371 INFO L793 eck$LassoCheckResult]: Loop: 3463#L430-2 assume !false; 3505#L431 assume test_~splverifierCounter~0#1 < 4; 3504#L432 test_~tmp~3#1 := test_#t~nondet42#1;havoc test_#t~nondet42#1; 3502#L440 assume !(0 != test_~tmp~3#1); 3500#L440-2 test_~tmp___0~0#1 := test_#t~nondet43#1;havoc test_#t~nondet43#1; 3498#L450 assume !(0 != test_~tmp___0~0#1); 3496#L450-2 test_~tmp___2~0#1 := test_#t~nondet44#1;havoc test_#t~nondet44#1; 3495#L460 assume 0 != test_~tmp___2~0#1; 3493#L466-2 assume { :begin_inline_timeShift } true; 3266#L502 assume !(0 != ~pumpRunning~0); 3267#L502-2 assume 0 != ~systemActive~0;assume { :begin_inline_processEnvironment } true;havoc processEnvironment_#t~ret48#1, processEnvironment_~tmp~6#1;havoc processEnvironment_~tmp~6#1; 3337#L586 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__lowWaterSensor } true;havoc processEnvironment__wrappee__lowWaterSensor_#t~ret47#1, processEnvironment__wrappee__lowWaterSensor_~tmp~5#1;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~5#1; 3328#L560-2 assume !(0 != ~pumpRunning~0);assume { :begin_inline_processEnvironment__wrappee__highWaterSensor } true;havoc processEnvironment__wrappee__highWaterSensor_#t~ret46#1, processEnvironment__wrappee__highWaterSensor_~tmp~4#1;havoc processEnvironment__wrappee__highWaterSensor_~tmp~4#1; 3229#L534-6 assume 0 == ~pumpRunning~0;assume { :begin_inline_isHighWaterLevel } true;havoc isHighWaterLevel_#res#1;havoc isHighWaterLevel_#t~ret66#1, isHighWaterLevel_~retValue_acc~5#1, isHighWaterLevel_~tmp~7#1, isHighWaterLevel_~tmp___0~1#1;havoc isHighWaterLevel_~retValue_acc~5#1;havoc isHighWaterLevel_~tmp~7#1;havoc isHighWaterLevel_~tmp___0~1#1;assume { :begin_inline_isHighWaterSensorDry } true;havoc isHighWaterSensorDry_#res#1;havoc isHighWaterSensorDry_~retValue_acc~11#1;havoc isHighWaterSensorDry_~retValue_acc~11#1; 3230#L849-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~11#1 := 1;isHighWaterSensorDry_#res#1 := isHighWaterSensorDry_~retValue_acc~11#1; 3376#L854-3 isHighWaterLevel_#t~ret66#1 := isHighWaterSensorDry_#res#1;assume { :end_inline_isHighWaterSensorDry } true;isHighWaterLevel_~tmp~7#1 := isHighWaterLevel_#t~ret66#1;havoc isHighWaterLevel_#t~ret66#1; 3489#L688-9 assume 0 != isHighWaterLevel_~tmp~7#1;isHighWaterLevel_~tmp___0~1#1 := 0; 3488#L688-11 isHighWaterLevel_~retValue_acc~5#1 := isHighWaterLevel_~tmp___0~1#1;isHighWaterLevel_#res#1 := isHighWaterLevel_~retValue_acc~5#1; 3487#L694-3 processEnvironment__wrappee__highWaterSensor_#t~ret46#1 := isHighWaterLevel_#res#1;assume { :end_inline_isHighWaterLevel } true;processEnvironment__wrappee__highWaterSensor_~tmp~4#1 := processEnvironment__wrappee__highWaterSensor_#t~ret46#1;havoc processEnvironment__wrappee__highWaterSensor_#t~ret46#1; 3486#L538-9 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~4#1);assume { :begin_inline_processEnvironment__wrappee__base } true; 3401#L526-6 assume { :end_inline_processEnvironment__wrappee__base } true; 3402#L534-7 assume { :end_inline_processEnvironment__wrappee__highWaterSensor } true; 3293#L560-3 assume { :end_inline_processEnvironment__wrappee__lowWaterSensor } true; 3286#L586-1 assume { :end_inline_processEnvironment } true; 3379#L509-1 assume { :begin_inline___utac_acc__Specification4_spec__1 } true;havoc __utac_acc__Specification4_spec__1_#t~ret79#1, __utac_acc__Specification4_spec__1_#t~ret80#1, __utac_acc__Specification4_spec__1_~tmp~9#1, __utac_acc__Specification4_spec__1_~tmp___0~3#1;havoc __utac_acc__Specification4_spec__1_~tmp~9#1;havoc __utac_acc__Specification4_spec__1_~tmp___0~3#1;assume { :begin_inline_getWaterLevel } true;havoc getWaterLevel_#res#1;havoc getWaterLevel_~retValue_acc~10#1;havoc getWaterLevel_~retValue_acc~10#1;getWaterLevel_~retValue_acc~10#1 := ~waterLevel~0;getWaterLevel_#res#1 := getWaterLevel_~retValue_acc~10#1; 3425#L841 __utac_acc__Specification4_spec__1_#t~ret79#1 := getWaterLevel_#res#1;assume { :end_inline_getWaterLevel } true;__utac_acc__Specification4_spec__1_~tmp~9#1 := __utac_acc__Specification4_spec__1_#t~ret79#1;havoc __utac_acc__Specification4_spec__1_#t~ret79#1; 3426#L877 assume !(0 == __utac_acc__Specification4_spec__1_~tmp~9#1); 3508#L877-1 assume { :end_inline___utac_acc__Specification4_spec__1 } true; 3506#L519 assume { :end_inline_timeShift } true; 3463#L430-2 [2021-11-13 18:26:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1803949509, now seen corresponding path program 5 times [2021-11-13 18:26:11,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:11,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336221306] [2021-11-13 18:26:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:11,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:11,441 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:26:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:11,502 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:26:11,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:11,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1120005974, now seen corresponding path program 1 times [2021-11-13 18:26:11,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:11,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843475808] [2021-11-13 18:26:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:11,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:11,519 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:26:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:11,539 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:26:11,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:26:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1245740698, now seen corresponding path program 1 times [2021-11-13 18:26:11,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:26:11,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569515162] [2021-11-13 18:26:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:26:11,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:26:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:11,629 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:26:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:26:11,695 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:27:20,645 WARN L227 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 491 DAG size of output: 433 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-13 18:28:32,228 WARN L227 SmtUtils]: Spent 33.96s on a formula simplification that was a NOOP. DAG size: 433 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-13 18:28:32,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.11 06:28:32 BoogieIcfgContainer [2021-11-13 18:28:32,511 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-13 18:28:32,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:28:32,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:28:32,513 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:28:32,513 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:26:08" (3/4) ... [2021-11-13 18:28:32,516 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-13 18:28:32,646 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:28:32,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:28:32,647 INFO L158 Benchmark]: Toolchain (without parser) took 146859.89ms. Allocated memory was 100.7MB in the beginning and 167.8MB in the end (delta: 67.1MB). Free memory was 56.2MB in the beginning and 62.0MB in the end (delta: -5.8MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2021-11-13 18:28:32,647 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:28:32,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 651.63ms. Allocated memory is still 100.7MB. Free memory was 56.0MB in the beginning and 64.9MB in the end (delta: -8.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-13 18:28:32,649 INFO L158 Benchmark]: Boogie Procedure Inliner took 148.48ms. Allocated memory is still 100.7MB. Free memory was 64.9MB in the beginning and 60.1MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:28:32,649 INFO L158 Benchmark]: Boogie Preprocessor took 65.97ms. Allocated memory is still 100.7MB. Free memory was 60.1MB in the beginning and 56.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:28:32,650 INFO L158 Benchmark]: RCFGBuilder took 1498.34ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 56.7MB in the beginning and 63.5MB in the end (delta: -6.9MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2021-11-13 18:28:32,651 INFO L158 Benchmark]: BuchiAutomizer took 144354.29ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 63.5MB in the beginning and 65.1MB in the end (delta: -1.6MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. [2021-11-13 18:28:32,651 INFO L158 Benchmark]: Witness Printer took 133.88ms. Allocated memory is still 167.8MB. Free memory was 65.1MB in the beginning and 62.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:28:32,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 651.63ms. Allocated memory is still 100.7MB. Free memory was 56.0MB in the beginning and 64.9MB in the end (delta: -8.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 148.48ms. Allocated memory is still 100.7MB. Free memory was 64.9MB in the beginning and 60.1MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.97ms. Allocated memory is still 100.7MB. Free memory was 60.1MB in the beginning and 56.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1498.34ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 56.7MB in the beginning and 63.5MB in the end (delta: -6.9MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 144354.29ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 63.5MB in the beginning and 65.1MB in the end (delta: -1.6MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. * Witness Printer took 133.88ms. Allocated memory is still 167.8MB. Free memory was 65.1MB in the beginning and 62.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 312 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 144.2s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 142.7s. Construction of modules took 0.5s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 961 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 312 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2915 SdHoareTripleChecker+Valid, 704.32ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2915 mSDsluCounter, 3111 SdHoareTripleChecker+Invalid, 563.01ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1623 mSDsCounter, 110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 270 IncrementalHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 110 mSolverCounterUnsat, 1488 mSDtfsCounter, 270 mSolverCounterSat, 42.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 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: 430]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=16791} State at position 1 is {NULL=0, NULL=16817, NULL=0, tmp___0=0, NULL=16791, tmp___0=0, methaneLevelCritical=0, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6dbd5bd2=0, retValue_acc=0, NULL=16806, NULL=0, tmp___2=55, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6453ef5f=0, NULL=16797, NULL=16813, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2fd39f3d=55, cleanupTimeShifts=4, \result=0, NULL=0, \result=1, waterLevel=1, NULL=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@362800ad=0, tmp=0, \result=0, tmp___0=0, head=0, pumpRunning=0, NULL=16818, NULL=16819, NULL=0, NULL=0, NULL=0, NULL=0, tmp=0, NULL=0, NULL=16808, retValue_acc=1, NULL=0, \result=1, NULL=0, tmp=1, NULL=0, NULL=16794, NULL=16814, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ba93e86=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21fe2d2a=0, NULL=16809, NULL=16800, head=0, retValue_acc=0, NULL=0, NULL=0, NULL=16807, NULL=0, NULL=0, tmp=0, splverifierCounter=0, NULL=0, NULL=16793, NULL=16812, NULL=16802, tmp=1, NULL=16795, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4848dc76=0, NULL=0, NULL=16810, NULL=0, NULL=16805, NULL=16803, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21a077df=0, NULL=16811, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44b25774=0, NULL=16815, NULL=0, NULL=0, tmp___1=0, NULL=0, systemActive=1, NULL=0, NULL=0, NULL=0, NULL=16798, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@573d99e6=0, NULL=0, NULL=16796, retValue_acc=1, \result=1, tmp=1, NULL=16799, NULL=0, NULL=0, NULL=16816, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75f9e238=0, tmp=0, NULL=16792, NULL=16801, NULL=16804} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 430]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L494] int pumpRunning = 0; [L495] int systemActive = 1; [L766] int waterLevel = 1; [L767] int methaneLevelCritical = 0; [L895] int cleanupTimeShifts = 4; [L968] int retValue_acc ; [L969] int tmp ; [L973] FCALL select_helpers() [L974] FCALL select_features() [L975] CALL, EXPR valid_product() [L747] int retValue_acc ; [L750] retValue_acc = 1 [L751] return (retValue_acc); [L975] RET, EXPR valid_product() [L975] tmp = valid_product() [L977] COND TRUE \read(tmp) [L979] FCALL setup() [L980] CALL runTest() [L962] CALL test() [L421] int splverifierCounter ; [L422] int tmp ; [L423] int tmp___0 ; [L424] int tmp___1 ; [L425] int tmp___2 ; [L428] splverifierCounter = 0 Loop: [L430] COND TRUE 1 [L432] COND TRUE splverifierCounter < 4 [L438] tmp = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp)) [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND FALSE !(\read(tmp___0)) [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) [L473] CALL timeShift() [L502] COND FALSE !(\read(pumpRunning)) [L509] COND TRUE \read(systemActive) [L511] CALL processEnvironment() [L583] int tmp ; [L586] COND FALSE !(\read(pumpRunning)) [L601] CALL processEnvironment__wrappee__lowWaterSensor() [L557] int tmp ; [L560] COND FALSE !(\read(pumpRunning)) [L575] CALL processEnvironment__wrappee__highWaterSensor() [L531] int tmp ; [L534] COND TRUE ! pumpRunning [L536] CALL, EXPR isHighWaterLevel() [L680] int retValue_acc ; [L681] int tmp ; [L682] int tmp___0 ; [L686] CALL, EXPR isHighWaterSensorDry() [L846] int retValue_acc ; [L849] COND TRUE waterLevel < 2 [L850] retValue_acc = 1 [L851] return (retValue_acc); [L686] RET, EXPR isHighWaterSensorDry() [L686] tmp = isHighWaterSensorDry() [L688] COND TRUE \read(tmp) [L689] tmp___0 = 0 [L693] retValue_acc = tmp___0 [L694] return (retValue_acc); [L536] RET, EXPR isHighWaterLevel() [L536] tmp = isHighWaterLevel() [L538] COND FALSE !(\read(tmp)) [L544] FCALL processEnvironment__wrappee__base() [L575] RET processEnvironment__wrappee__highWaterSensor() [L601] RET processEnvironment__wrappee__lowWaterSensor() [L511] RET processEnvironment() [L517] CALL __utac_acc__Specification4_spec__1() [L870] int tmp ; [L871] int tmp___0 ; [L875] CALL, EXPR getWaterLevel() [L837] int retValue_acc ; [L840] retValue_acc = waterLevel [L841] return (retValue_acc); [L875] RET, EXPR getWaterLevel() [L875] tmp = getWaterLevel() [L877] COND FALSE !(tmp == 0) [L517] RET __utac_acc__Specification4_spec__1() [L473] RET timeShift() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-13 18:28:32,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26d952ca-b671-4796-ae0d-c34859f667e1/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)