./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD --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 88f09ec5af0f641c9edfe2f7047937341e46c7f8baabeed0fd38f069cd3b5278 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:49:12,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:49:12,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:49:12,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:49:12,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:49:12,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:49:12,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:49:12,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:49:12,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:49:12,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:49:12,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:49:12,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:49:12,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:49:12,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:49:12,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:49:12,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:49:12,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:49:12,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:49:12,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:49:12,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:49:12,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:49:12,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:49:12,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:49:12,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:49:12,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:49:12,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:49:12,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:49:12,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:49:12,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:49:12,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:49:12,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:49:12,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:49:12,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:49:12,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:49:12,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:49:12,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:49:12,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:49:12,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:49:12,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:49:12,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:49:12,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:49:12,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 22:49:12,397 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:49:12,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:49:12,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:49:12,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:49:12,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:49:12,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:49:12,404 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:49:12,404 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 22:49:12,405 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 22:49:12,405 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 22:49:12,406 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 22:49:12,407 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 22:49:12,407 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 22:49:12,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:49:12,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:49:12,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 22:49:12,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:49:12,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:49:12,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:49:12,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 22:49:12,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 22:49:12,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 22:49:12,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:49:12,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:49:12,411 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 22:49:12,411 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:49:12,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 22:49:12,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:49:12,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:49:12,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:49:12,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:49:12,416 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:49:12,417 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 22:49:12,418 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_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88f09ec5af0f641c9edfe2f7047937341e46c7f8baabeed0fd38f069cd3b5278 [2021-10-28 22:49:12,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:49:12,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:49:12,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:49:12,805 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:49:12,806 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:49:12,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c [2021-10-28 22:49:12,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/data/28f86045b/4e8d5b509a1f41a68b519ec1c310bfe2/FLAGc69483edc [2021-10-28 22:49:13,633 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:49:13,633 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c [2021-10-28 22:49:13,651 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/data/28f86045b/4e8d5b509a1f41a68b519ec1c310bfe2/FLAGc69483edc [2021-10-28 22:49:13,868 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/data/28f86045b/4e8d5b509a1f41a68b519ec1c310bfe2 [2021-10-28 22:49:13,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:49:13,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:49:13,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:49:13,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:49:13,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:49:13,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:49:13" (1/1) ... [2021-10-28 22:49:13,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e5b428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:13, skipping insertion in model container [2021-10-28 22:49:13,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:49:13" (1/1) ... [2021-10-28 22:49:13,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:49:13,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:49:14,347 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_929e0a78-adb4-427a-affd-5f860cbd10c5/sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c[3971,3984] [2021-10-28 22:49:14,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:49:14,486 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:49:14,515 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_929e0a78-adb4-427a-affd-5f860cbd10c5/sv-benchmarks/c/product-lines/minepump_spec5_product54.cil.c[3971,3984] [2021-10-28 22:49:14,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:49:14,614 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:49:14,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14 WrapperNode [2021-10-28 22:49:14,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:49:14,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:49:14,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:49:14,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:49:14,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:49:14,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:49:14,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:49:14,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:49:14,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:49:14,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:49:14,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:49:14,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:49:14,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (1/1) ... [2021-10-28 22:49:14,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 22:49:14,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:49:14,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 22:49:14,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 22:49:15,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:49:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:49:15,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:49:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:49:16,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:49:16,364 INFO L299 CfgBuilder]: Removed 292 assume(true) statements. [2021-10-28 22:49:16,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:49:16 BoogieIcfgContainer [2021-10-28 22:49:16,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:49:16,369 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 22:49:16,370 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 22:49:16,380 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 22:49:16,382 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:49:16,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 10:49:13" (1/3) ... [2021-10-28 22:49:16,384 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@727f8ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:49:16, skipping insertion in model container [2021-10-28 22:49:16,385 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:49:16,386 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:14" (2/3) ... [2021-10-28 22:49:16,386 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@727f8ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 10:49:16, skipping insertion in model container [2021-10-28 22:49:16,386 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 22:49:16,387 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:49:16" (3/3) ... [2021-10-28 22:49:16,388 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec5_product54.cil.c [2021-10-28 22:49:16,459 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 22:49:16,459 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 22:49:16,459 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 22:49:16,459 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 22:49:16,460 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 22:49:16,460 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 22:49:16,460 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 22:49:16,460 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 22:49:16,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 195 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 194 states have internal predecessors, (297), 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) [2021-10-28 22:49:16,571 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-10-28 22:49:16,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:49:16,572 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:49:16,584 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:16,584 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:16,584 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 22:49:16,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 195 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 194 states have internal predecessors, (297), 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) [2021-10-28 22:49:16,608 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 127 [2021-10-28 22:49:16,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:49:16,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:49:16,611 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:16,611 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:16,618 INFO L791 eck$LassoCheckResult]: Stem: 185#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 123#L-1true havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 161#L650true havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 115#L658true main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 140#L310true assume 0 != main_~tmp~1; 100#L282true ~switchedOnBeforeTS~0 := 0; 74#L59true havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 183#L80-1true [2021-10-28 22:49:16,619 INFO L793 eck$LassoCheckResult]: Loop: 183#L80-1true assume !false; 75#L572true assume test_~splverifierCounter~0 < 4; 36#L573true test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 194#L581true assume !(0 != test_~tmp~7); 122#L581-1true test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 79#L591true assume !(0 != test_~tmp___0~3); 184#L591-1true test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 131#L601true assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 195#L609-2true havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 40#L474true __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 9#L69true assume !(0 != ~pumpRunning~0); 145#L337true assume !(0 != ~systemActive~0); 23#L344true havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 60#L184true __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 106#L80true assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 183#L80-1true [2021-10-28 22:49:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-10-28 22:49:16,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:16,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671465355] [2021-10-28 22:49:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:16,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:17,020 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:49:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:17,235 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:49:17,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1016486541, now seen corresponding path program 1 times [2021-10-28 22:49:17,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:17,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914384646] [2021-10-28 22:49:17,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:17,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:17,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:17,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914384646] [2021-10-28 22:49:17,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914384646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:49:17,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:49:17,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:49:17,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786486697] [2021-10-28 22:49:17,375 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:49:17,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:17,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:49:17,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:49:17,412 INFO L87 Difference]: Start difference. First operand has 195 states, 194 states have (on average 1.5309278350515463) internal successors, (297), 194 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-10-28 22:49:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:17,507 INFO L93 Difference]: Finished difference Result 195 states and 287 transitions. [2021-10-28 22:49:17,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:49:17,511 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 287 transitions. [2021-10-28 22:49:17,524 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-10-28 22:49:17,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 188 states and 279 transitions. [2021-10-28 22:49:17,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 188 [2021-10-28 22:49:17,541 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2021-10-28 22:49:17,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 279 transitions. [2021-10-28 22:49:17,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:49:17,547 INFO L681 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2021-10-28 22:49:17,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states and 279 transitions. [2021-10-28 22:49:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-10-28 22:49:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 188 states have (on average 1.4840425531914894) internal successors, (279), 187 states have internal predecessors, (279), 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) [2021-10-28 22:49:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 279 transitions. [2021-10-28 22:49:17,616 INFO L704 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2021-10-28 22:49:17,616 INFO L587 BuchiCegarLoop]: Abstraction has 188 states and 279 transitions. [2021-10-28 22:49:17,616 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 22:49:17,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 279 transitions. [2021-10-28 22:49:17,621 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 125 [2021-10-28 22:49:17,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:49:17,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:49:17,625 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:17,625 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:17,626 INFO L791 eck$LassoCheckResult]: Stem: 583#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 491#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 492#L650 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 461#L658 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 462#L310 assume 0 != main_~tmp~1; 401#L282 ~switchedOnBeforeTS~0 := 0; 402#L59 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 423#L80-1 [2021-10-28 22:49:17,627 INFO L793 eck$LassoCheckResult]: Loop: 423#L80-1 assume !false; 576#L572 assume test_~splverifierCounter~0 < 4; 511#L573 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 512#L581 assume !(0 != test_~tmp~7); 489#L581-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 490#L591 assume !(0 != test_~tmp___0~3); 473#L591-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 521#L601 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 523#L609-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 519#L474 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 438#L69 assume !(0 != ~pumpRunning~0); 439#L337 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 469#L421 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret22, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 470#L395-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 546#L369-3 assume !(0 == ~pumpRunning~0); 451#L344 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 474#L184 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 421#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 423#L80-1 [2021-10-28 22:49:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:17,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-10-28 22:49:17,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:17,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536070514] [2021-10-28 22:49:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:17,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:17,717 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:49:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:17,845 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:49:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash 239725566, now seen corresponding path program 1 times [2021-10-28 22:49:17,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:17,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342109071] [2021-10-28 22:49:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:17,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:17,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:17,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342109071] [2021-10-28 22:49:17,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342109071] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:49:17,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:49:17,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:49:17,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516701498] [2021-10-28 22:49:17,897 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:49:17,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:17,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 22:49:17,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 22:49:17,900 INFO L87 Difference]: Start difference. First operand 188 states and 279 transitions. cyclomatic complexity: 93 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2021-10-28 22:49:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:18,139 INFO L93 Difference]: Finished difference Result 201 states and 278 transitions. [2021-10-28 22:49:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 22:49:18,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 201 states and 278 transitions. [2021-10-28 22:49:18,145 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2021-10-28 22:49:18,152 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 201 states to 201 states and 278 transitions. [2021-10-28 22:49:18,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 201 [2021-10-28 22:49:18,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 201 [2021-10-28 22:49:18,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 201 states and 278 transitions. [2021-10-28 22:49:18,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:49:18,163 INFO L681 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-10-28 22:49:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states and 278 transitions. [2021-10-28 22:49:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-10-28 22:49:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.3830845771144278) internal successors, (278), 200 states have internal predecessors, (278), 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) [2021-10-28 22:49:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2021-10-28 22:49:18,185 INFO L704 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-10-28 22:49:18,185 INFO L587 BuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-10-28 22:49:18,186 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 22:49:18,186 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 278 transitions. [2021-10-28 22:49:18,191 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 138 [2021-10-28 22:49:18,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:49:18,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:49:18,195 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:18,195 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] [2021-10-28 22:49:18,196 INFO L791 eck$LassoCheckResult]: Stem: 949#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 869#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 870#L650 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 848#L658 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 849#L310 assume 0 != main_~tmp~1; 794#L282 ~switchedOnBeforeTS~0 := 0; 795#L59 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 810#L80-1 [2021-10-28 22:49:18,196 INFO L793 eck$LassoCheckResult]: Loop: 810#L80-1 assume !false; 944#L572 assume test_~splverifierCounter~0 < 4; 884#L573 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 885#L581 assume !(0 != test_~tmp~7); 867#L581-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 868#L591 assume !(0 != test_~tmp___0~3); 857#L591-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 894#L601 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 896#L609-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 892#L474 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 825#L69 assume !(0 != ~pumpRunning~0); 826#L337 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 852#L421 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret22, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 853#L395-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 921#L369-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 922#L192-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 886#L197-3 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 800#L523-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 801#L523-11 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 946#L529-3 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 914#L373-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 838#L344 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 858#L184 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 808#L80 assume !(2 != __utac_acc__Specification5_spec__3_~tmp~0); 810#L80-1 [2021-10-28 22:49:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:18,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-10-28 22:49:18,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:18,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420127361] [2021-10-28 22:49:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:18,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:18,296 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:49:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:18,408 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:49:18,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:18,409 INFO L85 PathProgramCache]: Analyzing trace with hash 444481642, now seen corresponding path program 1 times [2021-10-28 22:49:18,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:18,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902825939] [2021-10-28 22:49:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:18,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:18,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:18,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902825939] [2021-10-28 22:49:18,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902825939] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:49:18,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:49:18,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:49:18,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156375554] [2021-10-28 22:49:18,469 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 22:49:18,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:49:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:49:18,471 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. cyclomatic complexity: 79 Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:18,888 INFO L93 Difference]: Finished difference Result 916 states and 1281 transitions. [2021-10-28 22:49:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:49:18,889 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 916 states and 1281 transitions. [2021-10-28 22:49:18,902 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 625 [2021-10-28 22:49:18,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 916 states to 916 states and 1281 transitions. [2021-10-28 22:49:18,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 916 [2021-10-28 22:49:18,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 916 [2021-10-28 22:49:18,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 916 states and 1281 transitions. [2021-10-28 22:49:18,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 22:49:18,919 INFO L681 BuchiCegarLoop]: Abstraction has 916 states and 1281 transitions. [2021-10-28 22:49:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states and 1281 transitions. [2021-10-28 22:49:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 392. [2021-10-28 22:49:18,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 392 states have (on average 1.3698979591836735) internal successors, (537), 391 states have internal predecessors, (537), 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) [2021-10-28 22:49:18,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 537 transitions. [2021-10-28 22:49:18,947 INFO L704 BuchiCegarLoop]: Abstraction has 392 states and 537 transitions. [2021-10-28 22:49:18,947 INFO L587 BuchiCegarLoop]: Abstraction has 392 states and 537 transitions. [2021-10-28 22:49:18,947 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 22:49:18,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 392 states and 537 transitions. [2021-10-28 22:49:18,975 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 274 [2021-10-28 22:49:18,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 22:49:18,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 22:49:18,976 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:18,976 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] [2021-10-28 22:49:18,976 INFO L791 eck$LassoCheckResult]: Stem: 2110#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string11.base, #t~string11.offset := #Ultimate.allocOnStack(13);call #t~string13.base, #t~string13.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string13.base, #t~string13.offset, 1);call write~init~int(77, #t~string13.base, 1 + #t~string13.offset, 1);call write~init~int(101, #t~string13.base, 2 + #t~string13.offset, 1);call write~init~int(116, #t~string13.base, 3 + #t~string13.offset, 1);call write~init~int(104, #t~string13.base, 4 + #t~string13.offset, 1);call write~init~int(58, #t~string13.base, 5 + #t~string13.offset, 1);call write~init~int(0, #t~string13.base, 6 + #t~string13.offset, 1);call #t~string15.base, #t~string15.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string15.base, #t~string15.offset, 1);call write~init~int(82, #t~string15.base, 1 + #t~string15.offset, 1);call write~init~int(73, #t~string15.base, 2 + #t~string15.offset, 1);call write~init~int(84, #t~string15.base, 3 + #t~string15.offset, 1);call write~init~int(0, #t~string15.base, 4 + #t~string15.offset, 1);call #t~string17.base, #t~string17.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string17.base, #t~string17.offset, 1);call write~init~int(75, #t~string17.base, 1 + #t~string17.offset, 1);call write~init~int(0, #t~string17.base, 2 + #t~string17.offset, 1);call #t~string19.base, #t~string19.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string19.base, #t~string19.offset, 1);call write~init~int(0, #t~string19.base, 1 + #t~string19.offset, 1);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(13);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string28.base, #t~string28.offset, 1);call write~init~int(110, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 2 + #t~string28.offset, 1);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string30.base, #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 1 + #t~string30.offset, 1);call write~init~int(102, #t~string30.base, 2 + #t~string30.offset, 1);call write~init~int(0, #t~string30.base, 3 + #t~string30.offset, 1);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string32.base, #t~string32.offset, 1);call write~init~int(80, #t~string32.base, 1 + #t~string32.offset, 1);call write~init~int(117, #t~string32.base, 2 + #t~string32.offset, 1);call write~init~int(109, #t~string32.base, 3 + #t~string32.offset, 1);call write~init~int(112, #t~string32.base, 4 + #t~string32.offset, 1);call write~init~int(58, #t~string32.base, 5 + #t~string32.offset, 1);call write~init~int(0, #t~string32.base, 6 + #t~string32.offset, 1);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string34.base, #t~string34.offset, 1);call write~init~int(110, #t~string34.base, 1 + #t~string34.offset, 1);call write~init~int(0, #t~string34.base, 2 + #t~string34.offset, 1);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string36.base, #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 1 + #t~string36.offset, 1);call write~init~int(102, #t~string36.base, 2 + #t~string36.offset, 1);call write~init~int(0, #t~string36.base, 3 + #t~string36.offset, 1);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string38.base, #t~string38.offset, 1);call write~init~int(32, #t~string38.base, 1 + #t~string38.offset, 1);call write~init~int(0, #t~string38.base, 2 + #t~string38.offset, 1);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string40.base, #t~string40.offset, 1);call write~init~int(0, #t~string40.base, 1 + #t~string40.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(30);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(9);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(21);call #t~string69.base, #t~string69.offset := #Ultimate.allocOnStack(30);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(9);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(21);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(30);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(9);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(25);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(30);call #t~string79.base, #t~string79.offset := #Ultimate.allocOnStack(9);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(25);~switchedOnBeforeTS~0 := 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~cleanupTimeShifts~0 := 4;~pumpRunning~0 := 0;~systemActive~0 := 1;~head~0.base, ~head~0.offset := 0, 0; 2006#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~4, main_~tmp~1;havoc main_~retValue_acc~4;havoc main_~tmp~1; 2007#L650 havoc valid_product_#res;havoc valid_product_~retValue_acc~10;havoc valid_product_~retValue_acc~10;valid_product_~retValue_acc~10 := 1;valid_product_#res := valid_product_~retValue_acc~10; 1984#L658 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 1985#L310 assume 0 != main_~tmp~1; 1930#L282 ~switchedOnBeforeTS~0 := 0; 1931#L59 havoc test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_~splverifierCounter~0, test_~tmp~7, test_~tmp___0~3, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~7;havoc test_~tmp___0~3;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 2000#L80-1 [2021-10-28 22:49:18,977 INFO L793 eck$LassoCheckResult]: Loop: 2000#L80-1 assume !false; 2100#L572 assume test_~splverifierCounter~0 < 4; 2101#L573 test_~tmp~7 := test_#t~nondet43;havoc test_#t~nondet43; 2301#L581 assume !(0 != test_~tmp~7); 2299#L581-1 test_~tmp___0~3 := test_#t~nondet44;havoc test_#t~nondet44; 2298#L591 assume !(0 != test_~tmp___0~3); 2296#L591-1 test_~tmp___2~0 := test_#t~nondet45;havoc test_#t~nondet45; 2295#L601 assume 0 != test_~tmp___2~0;~systemActive~0 := 1; 2293#L609-2 havoc __utac_acc__Specification5_spec__2_#t~ret7;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 2292#L474 __utac_acc__Specification5_spec__2_#t~ret7 := isPumpRunning_#res;~switchedOnBeforeTS~0 := __utac_acc__Specification5_spec__2_#t~ret7;havoc __utac_acc__Specification5_spec__2_#t~ret7; 2226#L69 assume !(0 != ~pumpRunning~0); 2225#L337 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret23, processEnvironment_~tmp~4;havoc processEnvironment_~tmp~4; 2221#L421 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__lowWaterSensor_#t~ret22, processEnvironment__wrappee__lowWaterSensor_~tmp~3;havoc processEnvironment__wrappee__lowWaterSensor_~tmp~3; 2220#L395-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret21, processEnvironment__wrappee__highWaterSensor_~tmp~2;havoc processEnvironment__wrappee__highWaterSensor_~tmp~2; 2219#L369-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret41, isHighWaterLevel_~retValue_acc~7, isHighWaterLevel_~tmp~5, isHighWaterLevel_~tmp___0~1;havoc isHighWaterLevel_~retValue_acc~7;havoc isHighWaterLevel_~tmp~5;havoc isHighWaterLevel_~tmp___0~1;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~2;havoc isHighWaterSensorDry_~retValue_acc~2; 2215#L192-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~2 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~2; 2082#L197-3 isHighWaterLevel_#t~ret41 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~5 := isHighWaterLevel_#t~ret41;havoc isHighWaterLevel_#t~ret41; 1936#L523-9 assume 0 != isHighWaterLevel_~tmp~5;isHighWaterLevel_~tmp___0~1 := 0; 1937#L523-11 isHighWaterLevel_~retValue_acc~7 := isHighWaterLevel_~tmp___0~1;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~7; 2103#L529-3 processEnvironment__wrappee__highWaterSensor_#t~ret21 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~2 := processEnvironment__wrappee__highWaterSensor_#t~ret21;havoc processEnvironment__wrappee__highWaterSensor_#t~ret21; 2060#L373-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~2); 1973#L344 havoc __utac_acc__Specification5_spec__3_#t~ret8, __utac_acc__Specification5_spec__3_#t~ret9, __utac_acc__Specification5_spec__3_~tmp~0, __utac_acc__Specification5_spec__3_~tmp___0~0;havoc __utac_acc__Specification5_spec__3_~tmp~0;havoc __utac_acc__Specification5_spec__3_~tmp___0~0;havoc getWaterLevel_#res;havoc getWaterLevel_~retValue_acc~1;havoc getWaterLevel_~retValue_acc~1;getWaterLevel_~retValue_acc~1 := ~waterLevel~0;getWaterLevel_#res := getWaterLevel_~retValue_acc~1; 2155#L184 __utac_acc__Specification5_spec__3_#t~ret8 := getWaterLevel_#res;__utac_acc__Specification5_spec__3_~tmp~0 := __utac_acc__Specification5_spec__3_#t~ret8;havoc __utac_acc__Specification5_spec__3_#t~ret8; 2139#L80 assume 2 != __utac_acc__Specification5_spec__3_~tmp~0;havoc isPumpRunning_#res;havoc isPumpRunning_~retValue_acc~6;havoc isPumpRunning_~retValue_acc~6;isPumpRunning_~retValue_acc~6 := ~pumpRunning~0;isPumpRunning_#res := isPumpRunning_~retValue_acc~6; 2140#L474-1 __utac_acc__Specification5_spec__3_#t~ret9 := isPumpRunning_#res;__utac_acc__Specification5_spec__3_~tmp___0~0 := __utac_acc__Specification5_spec__3_#t~ret9;havoc __utac_acc__Specification5_spec__3_#t~ret9; 2108#L84 assume !(0 != __utac_acc__Specification5_spec__3_~tmp___0~0); 2000#L80-1 [2021-10-28 22:49:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 4 times [2021-10-28 22:49:18,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:18,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262899727] [2021-10-28 22:49:18,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:18,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:19,020 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:49:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:19,070 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:49:19,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:19,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1945086949, now seen corresponding path program 1 times [2021-10-28 22:49:19,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:19,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029353665] [2021-10-28 22:49:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:19,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:19,080 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:49:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:19,092 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:49:19,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:19,093 INFO L85 PathProgramCache]: Analyzing trace with hash -21124693, now seen corresponding path program 1 times [2021-10-28 22:49:19,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:19,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069470929] [2021-10-28 22:49:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:19,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:19,134 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:49:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:49:19,194 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:50:40,350 WARN L207 SmtUtils]: Spent 1.35 m on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-10-28 22:51:58,115 WARN L207 SmtUtils]: Spent 39.10 s on a formula simplification that was a NOOP. DAG size: 435 [2021-10-28 22:51:58,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 10:51:58 BoogieIcfgContainer [2021-10-28 22:51:58,258 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 22:51:58,259 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:51:58,259 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:51:58,259 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:51:58,260 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:49:16" (3/4) ... [2021-10-28 22:51:58,263 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 22:51:58,405 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:51:58,405 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:51:58,407 INFO L168 Benchmark]: Toolchain (without parser) took 164531.26 ms. Allocated memory was 88.1 MB in the beginning and 163.6 MB in the end (delta: 75.5 MB). Free memory was 51.8 MB in the beginning and 84.4 MB in the end (delta: -32.6 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:51:58,408 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 88.1 MB. Free memory was 59.1 MB in the beginning and 59.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:51:58,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.60 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 51.5 MB in the beginning and 97.0 MB in the end (delta: -45.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:51:58,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 171.69 ms. Allocated memory is still 132.1 MB. Free memory was 97.0 MB in the beginning and 92.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:51:58,411 INFO L168 Benchmark]: Boogie Preprocessor took 103.74 ms. Allocated memory is still 132.1 MB. Free memory was 92.8 MB in the beginning and 89.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 22:51:58,412 INFO L168 Benchmark]: RCFGBuilder took 1474.07 ms. Allocated memory is still 132.1 MB. Free memory was 88.6 MB in the beginning and 102.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:51:58,413 INFO L168 Benchmark]: BuchiAutomizer took 161888.86 ms. Allocated memory was 132.1 MB in the beginning and 163.6 MB in the end (delta: 31.5 MB). Free memory was 102.0 MB in the beginning and 87.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 98.0 MB. Max. memory is 16.1 GB. [2021-10-28 22:51:58,414 INFO L168 Benchmark]: Witness Printer took 146.53 ms. Allocated memory is still 163.6 MB. Free memory was 87.4 MB in the beginning and 84.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:51:58,429 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 88.1 MB. Free memory was 59.1 MB in the beginning and 59.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 734.60 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 51.5 MB in the beginning and 97.0 MB in the end (delta: -45.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 171.69 ms. Allocated memory is still 132.1 MB. Free memory was 97.0 MB in the beginning and 92.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.74 ms. Allocated memory is still 132.1 MB. Free memory was 92.8 MB in the beginning and 89.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1474.07 ms. Allocated memory is still 132.1 MB. Free memory was 88.6 MB in the beginning and 102.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 161888.86 ms. Allocated memory was 132.1 MB in the beginning and 163.6 MB in the end (delta: 31.5 MB). Free memory was 102.0 MB in the beginning and 87.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 98.0 MB. Max. memory is 16.1 GB. * Witness Printer took 146.53 ms. Allocated memory is still 163.6 MB. Free memory was 87.4 MB in the beginning and 84.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 392 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 161.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 160.5s. Construction of modules took 0.3s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 524 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 392 states and ocurred in iteration 3. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 920 SDtfs, 1445 SDslu, 1171 SDs, 0 SdLazy, 232 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 571]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=25321} State at position 1 is {NULL=0, NULL=25321, NULL=25342, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f13f983=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3706d81b=78, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e47202f=0, NULL=25334, NULL=25349, methaneLevelCritical=0, NULL=25329, retValue_acc=1, NULL=0, tmp=0, NULL=25332, NULL=0, retValue_acc=0, tmp___1=0, NULL=0, NULL=25328, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64dd82b4=0, cleanupTimeShifts=4, NULL=25339, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@329fa8fa=0, waterLevel=1, NULL=0, NULL=0, \result=1, retValue_acc=1, head=0, pumpRunning=0, NULL=0, tmp=1, retValue_acc=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3e4a1c12=0, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, NULL=0, NULL=0, NULL=25331, NULL=0, tmp___0=0, NULL=0, tmp=1, NULL=25322, NULL=25327, NULL=25335, head=0, tmp=0, NULL=0, NULL=0, NULL=25337, NULL=25346, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b0dbd4f=0, NULL=25344, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5617daf1=0, retValue_acc=0, NULL=25325, NULL=0, tmp___0=0, NULL=0, NULL=25333, NULL=0, tmp=0, tmp=1, NULL=0, NULL=25347, NULL=25341, switchedOnBeforeTS=0, tmp=0, \result=0, NULL=0, systemActive=1, NULL=25343, \result=1, NULL=0, \result=0, NULL=25350, tmp___0=0, \result=0, NULL=0, NULL=25326, NULL=0, NULL=0, NULL=25340, NULL=25330, NULL=25338, tmp___2=78, splverifierCounter=0, NULL=0, NULL=25348, NULL=25336, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@346cccc8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d59f913=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b6452e1=0, NULL=25324, NULL=25323, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18d3705d=0, NULL=0, retValue_acc=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L53] int switchedOnBeforeTS ; [L109] int waterLevel = 1; [L110] int methaneLevelCritical = 0; [L221] int cleanupTimeShifts = 4; [L327] int pumpRunning = 0; [L328] int systemActive = 1; [L832] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L301] int retValue_acc ; [L302] int tmp ; [L654] int retValue_acc ; [L657] retValue_acc = 1 [L658] return (retValue_acc); [L308] tmp = valid_product() [L310] COND TRUE \read(tmp) [L58] switchedOnBeforeTS = 0 [L562] int splverifierCounter ; [L563] int tmp ; [L564] int tmp___0 ; [L565] int tmp___1 ; [L566] int tmp___2 ; [L569] splverifierCounter = 0 Loop: [L571] COND TRUE 1 [L573] COND TRUE splverifierCounter < 4 [L579] tmp = __VERIFIER_nondet_int() [L581] COND FALSE !(\read(tmp)) [L589] tmp___0 = __VERIFIER_nondet_int() [L591] COND FALSE !(\read(tmp___0)) [L599] tmp___2 = __VERIFIER_nondet_int() [L601] COND TRUE \read(tmp___2) [L556] systemActive = 1 [L470] int retValue_acc ; [L473] retValue_acc = pumpRunning [L474] return (retValue_acc); [L67] switchedOnBeforeTS = isPumpRunning() [L337] COND FALSE !(\read(pumpRunning)) [L344] COND TRUE \read(systemActive) [L418] int tmp ; [L421] COND FALSE !(\read(pumpRunning)) [L392] int tmp ; [L395] COND FALSE !(\read(pumpRunning)) [L366] int tmp ; [L369] COND TRUE ! pumpRunning [L515] int retValue_acc ; [L516] int tmp ; [L517] int tmp___0 ; [L189] int retValue_acc ; [L192] COND TRUE waterLevel < 2 [L193] retValue_acc = 1 [L194] return (retValue_acc); [L521] tmp = isHighWaterSensorDry() [L523] COND TRUE \read(tmp) [L524] tmp___0 = 0 [L528] retValue_acc = tmp___0 [L529] return (retValue_acc); [L371] tmp = isHighWaterLevel() [L373] COND FALSE !(\read(tmp)) [L73] int tmp ; [L74] int tmp___0 ; [L180] int retValue_acc ; [L183] retValue_acc = waterLevel [L184] return (retValue_acc); [L78] tmp = getWaterLevel() [L80] COND TRUE tmp != 2 [L470] int retValue_acc ; [L473] retValue_acc = pumpRunning [L474] return (retValue_acc); [L82] tmp___0 = isPumpRunning() [L84] COND FALSE !(\read(tmp___0)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 22:51:58,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929e0a78-adb4-427a-affd-5f860cbd10c5/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...